{"id":10065,"date":"2026-03-02T07:33:52","date_gmt":"2026-03-02T07:33:52","guid":{"rendered":"https:\/\/greenmood.se\/?p=10065"},"modified":"2026-03-02T07:35:33","modified_gmt":"2026-03-02T07:35:33","slug":"hur-man-specificerar-biofila-akustiklosningar","status":"publish","type":"post","link":"https:\/\/greenmood.se\/se\/hur-man-specificerar-biofila-akustiklosningar\/","title":{"rendered":"Hur man specificerar biofila akustiska l\u00f6sningar"},"content":{"rendered":"\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\r\n\r\n\r\n \r\n \r\n How to Specify Biophilic Acoustic Solutions - A 5-Step Decision Framework<\/title>\r\n <meta name=\"description\" content=\"A structured 5-step specification framework for architects and designers: define acoustic targets, select materials (NRC 0.73 Ball Moss, 0.65 Velvet Leaf, Cork Tiles), verify fire compliance (B-S2-d0 \/ FSI 0), map LEED v5 credits, and specify as a complete system.\" \/>\r\n <link rel=\"canonical\" href=\"https:\/\/greenmood.se\/ad-guidance\/how-to-specify-biophilic-acoustic-solutions\/\" \/>\r\n\r\n <!-- HowTo Schema -->\r\n <script type=\"application\/ld+json\">\r\n {\r\n \"@context\": \"https:\/\/schema.org\",\r\n \"@type\": \"HowTo\",\r\n \"name\": \"How to Specify Biophilic Acoustic Solutions\",\r\n \"description\": \"A structured 5-step specification framework for architects and designers specifying preserved biophilic acoustic wall systems in professional interiors.\",\r\n \"totalTime\": \"PT12M\",\r\n \"step\": [\r\n {\r\n \"@type\": \"HowToStep\",\r\n \"position\": 1,\r\n \"name\": \"Define the acoustic target\",\r\n \"text\": \"Establish the target RT60 for each zone, assess current acoustic conditions, calculate the absorptive surface area required, and identify which surfaces are available for treatment.\"\r\n },\r\n {\r\n \"@type\": \"HowToStep\",\r\n \"position\": 2,\r\n \"name\": \"Select the material family\",\r\n \"text\": \"Choose between preserved moss (Ball Moss NRC 0.73, Velvet Leaf NRC 0.65), cork acoustic tiles, or mixed compositions based on performance requirements and design intent.\"\r\n },\r\n {\r\n \"@type\": \"HowToStep\",\r\n \"position\": 3,\r\n \"name\": \"Verify fire compliance\",\r\n \"text\": \"Confirm fire classification for the complete assembly (not just material samples). Greenmood systems are classified B-S2-d0 (EN 13501-1) and FSI 0 \/ SDI 15 (ASTM E84).\"\r\n },\r\n {\r\n \"@type\": \"HowToStep\",\r\n \"position\": 4,\r\n \"name\": \"Map to certification credits\",\r\n \"text\": \"Identify which LEED v5, BREEAM, or WELL credits the selected system contributes to - including IEQ (acoustics), Materials (natural sourcing), and Biophilic Quality.\"\r\n },\r\n {\r\n \"@type\": \"HowToStep\",\r\n \"position\": 5,\r\n \"name\": \"Specify as a complete system\",\r\n \"text\": \"Document the full assembly: product identity, panel construction, acoustic data, fire classification, dimensions, installation method, maintenance protocol, and certification documentation.\"\r\n }\r\n ]\r\n }\r\n <\/script>\r\n\r\n <!-- FAQ Schema -->\r\n <script type=\"application\/ld+json\">\r\n {\r\n \"@context\": \"https:\/\/schema.org\",\r\n \"@type\": \"FAQPage\",\r\n \"mainEntity\": [\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"What NRC rating do I need for an open-plan office?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"For open-plan offices targeting an RT60 of 0.5\u20130.8 seconds, specify materials with NRC 0.65 or higher. Ball Moss (NRC 0.73) and Velvet Leaf (NRC 0.65) both meet this threshold when installed in sufficient surface area - typically 30\u201340% of the total ceiling or wall area.\"\r\n }\r\n },\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"Do preserved moss walls require fire testing?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"Yes. Preserved moss walls must be fire-tested as complete assemblies - not just as material samples. Greenmood systems are classified B-S2-d0 under EN 13501-1 (EU\/UK) and FSI 0 \/ SDI 15 under ASTM E84 (US), based on system-level testing.\"\r\n }\r\n },\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"Can biophilic acoustic products contribute to LEED v5 credits?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"Yes. Preserved biophilic systems can contribute to multiple LEED v5 credit categories simultaneously: Indoor Environmental Quality (acoustic performance), Materials & Resources (natural sourcing, extended lifecycle), and the new Connecting with Nature biophilic quality credit.\"\r\n }\r\n },\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"What is the difference between sound absorption and sound insulation?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"Sound absorption reduces reverberation within a space (measured by NRC). Sound insulation blocks sound transmission between spaces (measured by STC). Preserved moss and cork walls provide sound absorption - they improve acoustic comfort inside a room but are not designed to prevent sound from traveling to adjacent spaces.\"\r\n }\r\n },\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"How much preserved moss wall do I need to improve acoustics?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"As a guideline, a 200 m\u00b2 open office may require 60\u201380 m\u00b2 of absorptive surface with NRC above 0.65 to reduce RT60 from 1.2 seconds to 0.6 seconds. The exact requirement depends on existing finishes, room geometry, and ceiling height. Greenmood provides project-specific acoustic estimates during the specification process.\"\r\n }\r\n },\r\n {\r\n \"@type\": \"Question\",\r\n \"name\": \"Do preserved green walls need maintenance?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"No. Preserved green wall systems require zero irrigation, zero plant replacement, and zero ongoing horticultural maintenance. This also simplifies certification documentation - no irrigation logs, no seasonal maintenance records, no replacement schedules.\"\r\n }\r\n }\r\n ]\r\n }\r\n <\/script>\r\n\r\n <style>\r\n :root{\r\n --bg:#f6f7f8;\r\n --panel:#ffffff;\r\n --panel-soft:#fbfbfc;\r\n --border:rgba(0,0,0,0.08);\r\n --shadow:0 14px 36px rgba(0,0,0,0.08);\r\n --text:#14171a;\r\n --muted:#5c636e;\r\n --muted2:#8a9099;\r\n --radius:18px;\r\n --radius-sm:12px;\r\n --max:1120px;\r\n --content:760px;\r\n --btn:#111213;\r\n --btnText:#ffffff;\r\n --font-body:'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;\r\n --font-title:'Spezia','Poppins', serif;\r\n }\r\n\r\n *{ box-sizing:border-box; }\r\n html,body{ margin:0; padding:0; }\r\n body{\r\n font-family:var(--font-body);\r\n background:var(--bg);\r\n color:var(--text);\r\n line-height:1.6;\r\n }\r\n\r\n a{ color:inherit; text-decoration:none; }\r\n a:hover{ text-decoration:underline; }\r\n\r\n .container{\r\n max-width:var(--max);\r\n margin:0 auto;\r\n padding:16px 8px 80px;\r\n }\r\n\r\n \/* ===== Hero ===== *\/\r\n .hero{\r\n background:var(--panel);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n overflow:hidden;\r\n box-shadow:var(--shadow);\r\n }\r\n .hero-media{\r\n position:relative;\r\n height:360px;\r\n background-image:url(\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/greenmoodwall-system.webp\");\r\n background-size:cover;\r\n background-position:center;\r\n background-color:#2a3a2e;\r\n }\r\n .hero-media::after{\r\n content:\"\";\r\n position:absolute;\r\n inset:0;\r\n background:linear-gradient(180deg,rgba(255,255,255,0.00) 0%,rgba(255,255,255,0.55) 55%,rgba(255,255,255,0.85) 75%,rgba(255,255,255,1.00) 100%);\r\n }\r\n .hero-content{\r\n position:relative;\r\n padding:4px 26px 22px;\r\n }\r\n .kicker{\r\n display:inline-flex;\r\n align-items:center;\r\n gap:10px;\r\n font-family:var(--font-title);\r\n letter-spacing:0.12em;\r\n text-transform:uppercase;\r\n font-size:12px;\r\n color:var(--muted);\r\n }\r\n .kicker-dot{\r\n width:9px; height:9px;\r\n border-radius:50%;\r\n background:#c97a2b;\r\n display:inline-block;\r\n flex:0 0 9px;\r\n min-width:9px; min-height:9px;\r\n }\r\n h1{\r\n font-family:var(--font-title);\r\n margin:14px 0 10px;\r\n font-size:clamp(30px,3.2vw,44px);\r\n line-height:1.08;\r\n letter-spacing:-0.015em;\r\n color:var(--text);\r\n }\r\n .subtitle{\r\n margin:0;\r\n max-width:none;\r\n color:var(--muted);\r\n font-size:16px;\r\n }\r\n .meta{\r\n display:flex;\r\n flex-wrap:wrap;\r\n gap:10px;\r\n margin-top:32px;\r\n font-size:13px;\r\n color:var(--muted2);\r\n }\r\n .meta .pill{\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n padding:7px 10px;\r\n border-radius:999px;\r\n }\r\n .meta .pill strong{ color:var(--text); font-weight:600; }\r\n .tags{\r\n display:flex;\r\n flex-wrap:wrap;\r\n gap:8px;\r\n margin-top:14px;\r\n }\r\n .tag{\r\n font-size:12px;\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n padding:7px 10px;\r\n border-radius:999px;\r\n color:var(--muted);\r\n }\r\n\r\n \/* ===== Main layout ===== *\/\r\n .grid{\r\n display:grid;\r\n grid-template-columns:1fr;\r\n gap:22px;\r\n margin-top:18px;\r\n }\r\n @media (min-width:980px){\r\n .grid{ grid-template-columns:1fr 320px; }\r\n .sticky{ position:sticky; top:16px; }\r\n }\r\n\r\n \/* ===== Article card ===== *\/\r\n .article{\r\n background:var(--panel);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n box-shadow:var(--shadow);\r\n }\r\n .article-inner{\r\n padding:32px 28px;\r\n max-width:var(--content);\r\n }\r\n .notice{\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius-sm);\r\n padding:18px 18px;\r\n color:var(--muted);\r\n font-size:14px;\r\n margin-bottom:18px;\r\n }\r\n .notice strong{ color:var(--text); }\r\n\r\n \/* TOC *\/\r\n details.toc-details{\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n background:var(--panel-soft);\r\n overflow:hidden;\r\n margin:0 0 22px;\r\n }\r\n details summary{\r\n cursor:pointer;\r\n padding:16px 16px;\r\n display:flex;\r\n align-items:center;\r\n justify-content:space-between;\r\n font-family:var(--font-title);\r\n font-size:14px;\r\n letter-spacing:0.02em;\r\n color:var(--text);\r\n list-style:none;\r\n }\r\n details summary::-webkit-details-marker{ display:none; }\r\n .chev{\r\n width:10px; height:10px;\r\n border-right:2px solid rgba(0,0,0,0.45);\r\n border-bottom:2px solid rgba(0,0,0,0.45);\r\n transform:rotate(45deg);\r\n transition:transform 180ms ease;\r\n }\r\n details[open] .chev{ transform:rotate(225deg); }\r\n .toc{\r\n display:flex;\r\n flex-direction:column;\r\n gap:10px;\r\n padding:0 16px 16px;\r\n }\r\n .toc a{\r\n display:block;\r\n background:#fff;\r\n border:1px solid var(--border);\r\n border-radius:14px;\r\n padding:14px 14px;\r\n color:var(--text);\r\n font-size:14px;\r\n }\r\n .toc a:hover{\r\n text-decoration:none;\r\n background:#f3f4f5;\r\n }\r\n\r\n \/* ===== Typography ===== *\/\r\n h2{\r\n font-family:var(--font-title);\r\n margin:34px 0 10px;\r\n font-size:24px;\r\n letter-spacing:-0.01em;\r\n color:var(--text);\r\n }\r\n h3{\r\n font-family:var(--font-title);\r\n margin:22px 0 8px;\r\n font-size:16px;\r\n letter-spacing:0;\r\n color:var(--text);\r\n }\r\n p{\r\n margin:12px 0;\r\n color:var(--text);\r\n font-size:15.5px;\r\n }\r\n p + p{ margin-top:18px; }\r\n .leadline{\r\n font-weight:600;\r\n color:var(--text);\r\n }\r\n ul, ol{\r\n padding-left:20px;\r\n margin:12px 0 16px;\r\n color:var(--text);\r\n }\r\n li{ margin:8px 0; }\r\n li::marker{ color:#000; }\r\n\r\n .quote{\r\n margin:22px 0;\r\n padding:18px 18px;\r\n border-radius:var(--radius-sm);\r\n border:1px solid var(--border);\r\n background:var(--panel-soft);\r\n color:var(--text);\r\n }\r\n .quote strong{ font-weight:700; }\r\n\r\n .divider{\r\n height:1px;\r\n background:rgba(0,0,0,0.08);\r\n margin:26px 0;\r\n }\r\n\r\n .keytakeaways{\r\n display:grid;\r\n gap:12px;\r\n margin-top:14px;\r\n }\r\n .take{\r\n display:flex;\r\n gap:12px;\r\n padding:14px 14px;\r\n border-radius:14px;\r\n border:1px solid var(--border);\r\n background:var(--panel-soft);\r\n color:var(--text);\r\n }\r\n .take-bullet{\r\n width:10px; height:10px;\r\n margin-top:7px;\r\n border-radius:2px;\r\n background:#000;\r\n flex:0 0 auto;\r\n }\r\n\r\n \/* Step badge *\/\r\n .step-badge{\r\n display:inline-flex;\r\n align-items:center;\r\n justify-content:center;\r\n width:36px; height:36px;\r\n border-radius:10px;\r\n background:#111213;\r\n color:#fff;\r\n font-family:var(--font-title);\r\n font-size:16px;\r\n font-weight:700;\r\n margin-right:10px;\r\n flex:0 0 36px;\r\n }\r\n .step-header{\r\n display:flex;\r\n align-items:center;\r\n margin:34px 0 10px;\r\n }\r\n .step-header h2{ margin:0; }\r\n\r\n \/* Section TLDR *\/\r\n .section-tldr{\r\n background:var(--panel-soft);\r\n border-left:3px solid #111213;\r\n padding:12px 16px;\r\n margin:12px 0 18px;\r\n font-size:14px;\r\n color:var(--muted);\r\n border-radius:0 var(--radius-sm) var(--radius-sm) 0;\r\n }\r\n .section-tldr strong{\r\n color:var(--text);\r\n }\r\n\r\n \/* Data table *\/\r\n .data-table{\r\n width:100%;\r\n border-collapse:collapse;\r\n margin:18px 0;\r\n font-size:14px;\r\n }\r\n .data-table th{\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n padding:12px 14px;\r\n text-align:left;\r\n font-family:var(--font-title);\r\n font-size:13px;\r\n letter-spacing:0.02em;\r\n color:var(--muted);\r\n font-weight:600;\r\n }\r\n .data-table td{\r\n border:1px solid var(--border);\r\n padding:12px 14px;\r\n vertical-align:top;\r\n }\r\n .data-table tr:hover td{ background:#fafbfc; }\r\n .data-table a{ text-decoration:underline; text-underline-offset:2px; }\r\n\r\n \/* Framework overview *\/\r\n .framework-overview{\r\n display:grid;\r\n grid-template-columns:repeat(5, 1fr);\r\n gap:8px;\r\n margin:22px 0;\r\n }\r\n @media (max-width:768px){\r\n .framework-overview{ grid-template-columns:1fr; }\r\n }\r\n .fw-step{\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius-sm);\r\n padding:16px 12px;\r\n text-align:center;\r\n }\r\n .fw-step .fw-num{\r\n display:inline-flex;\r\n align-items:center;\r\n justify-content:center;\r\n width:30px; height:30px;\r\n border-radius:8px;\r\n background:#111213;\r\n color:#fff;\r\n font-family:var(--font-title);\r\n font-size:14px;\r\n font-weight:700;\r\n margin-bottom:8px;\r\n }\r\n .fw-step .fw-label{\r\n display:block;\r\n font-size:13px;\r\n color:var(--text);\r\n font-weight:500;\r\n line-height:1.35;\r\n }\r\n\r\n \/* Cross-link cards *\/\r\n .crosslink{\r\n display:flex;\r\n gap:14px;\r\n padding:16px;\r\n border-radius:14px;\r\n border:1px solid var(--border);\r\n background:var(--panel-soft);\r\n margin:12px 0;\r\n align-items:center;\r\n transition:background 120ms ease;\r\n }\r\n .crosslink:hover{\r\n background:#f0f1f2;\r\n text-decoration:none;\r\n }\r\n .crosslink-icon{\r\n width:40px; height:40px;\r\n border-radius:10px;\r\n background:#111213;\r\n display:flex;\r\n align-items:center;\r\n justify-content:center;\r\n flex:0 0 40px;\r\n }\r\n .crosslink-icon svg{\r\n width:20px; height:20px;\r\n fill:#fff;\r\n }\r\n .crosslink-text{ flex:1; }\r\n .crosslink-text strong{\r\n display:block;\r\n font-size:14px;\r\n color:var(--text);\r\n }\r\n .crosslink-text span{\r\n font-size:13px;\r\n color:var(--muted);\r\n }\r\n\r\n \/* Case study card *\/\r\n .case-study{\r\n margin:22px 0;\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n overflow:hidden;\r\n background:var(--panel-soft);\r\n }\r\n .case-study-header{\r\n padding:14px 18px;\r\n border-bottom:1px solid var(--border);\r\n font-family:var(--font-title);\r\n font-size:13px;\r\n text-transform:uppercase;\r\n letter-spacing:0.08em;\r\n color:var(--muted);\r\n display:flex;\r\n align-items:center;\r\n gap:8px;\r\n }\r\n .case-study-header .cs-dot{\r\n width:8px; height:8px;\r\n border-radius:50%;\r\n background:#2d8a4e;\r\n }\r\n .case-study-body{\r\n padding:18px;\r\n }\r\n .case-study-body h4{\r\n font-family:var(--font-title);\r\n margin:0 0 10px;\r\n font-size:18px;\r\n color:var(--text);\r\n }\r\n .case-study-body p{\r\n font-size:14.5px;\r\n margin:8px 0;\r\n }\r\n .cs-metric{\r\n display:inline-flex;\r\n align-items:center;\r\n gap:8px;\r\n background:#fff;\r\n border:1px solid var(--border);\r\n border-radius:999px;\r\n padding:8px 14px;\r\n font-size:14px;\r\n font-weight:600;\r\n color:var(--text);\r\n margin:6px 6px 6px 0;\r\n }\r\n .cs-metric-value{\r\n font-family:var(--font-title);\r\n font-size:18px;\r\n color:#111213;\r\n }\r\n\r\n \/* Article images *\/\r\n .article-img{\r\n width:100%;\r\n border-radius:var(--radius-sm);\r\n margin:22px 0;\r\n display:block;\r\n }\r\n .article-img-wrap{\r\n margin:22px 0;\r\n }\r\n .article-img-wrap img{\r\n width:100%;\r\n border-radius:var(--radius-sm);\r\n display:block;\r\n }\r\n .article-img-caption{\r\n font-size:12px;\r\n color:var(--muted2);\r\n margin-top:8px;\r\n padding:0 4px;\r\n }\r\n .article-img-grid{\r\n display:grid;\r\n grid-template-columns:1fr 1fr 1fr;\r\n gap:10px;\r\n margin:22px 0;\r\n }\r\n .article-img-grid img{\r\n width:100%;\r\n border-radius:var(--radius-sm);\r\n display:block;\r\n aspect-ratio:1\/1;\r\n object-fit:cover;\r\n }\r\n @media (max-width:768px){\r\n .article-img-grid{\r\n grid-template-columns:1fr;\r\n }\r\n }\r\n .article-img-grid-caption{\r\n grid-column:1 \/ -1;\r\n font-size:12px;\r\n color:var(--muted2);\r\n padding:0 4px;\r\n }\r\n\r\n \/* FAQ item *\/\r\n .faq-item{\r\n border:1px solid var(--border);\r\n border-radius:14px;\r\n margin:10px 0;\r\n overflow:hidden;\r\n }\r\n .faq-item summary{\r\n cursor:pointer;\r\n padding:16px 18px;\r\n display:flex;\r\n align-items:center;\r\n justify-content:space-between;\r\n font-size:15px;\r\n font-weight:600;\r\n color:var(--text);\r\n list-style:none;\r\n background:#fff;\r\n }\r\n .faq-item summary::-webkit-details-marker{ display:none; }\r\n .faq-item .faq-answer{\r\n padding:0 18px 16px;\r\n font-size:14.5px;\r\n color:var(--muted);\r\n background:#fff;\r\n }\r\n .faq-item .faq-answer p{\r\n margin:8px 0;\r\n font-size:14.5px;\r\n color:var(--muted);\r\n }\r\n .faq-item[open] summary{\r\n border-bottom:1px solid var(--border);\r\n }\r\n\r\n \/* ===== Sidebar ===== *\/\r\n .panel{\r\n background:var(--panel);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n box-shadow:var(--shadow);\r\n overflow:hidden;\r\n }\r\n .panel + .panel{ margin-top:14px; }\r\n .panel-hd{\r\n padding:14px 14px;\r\n border-bottom:1px solid var(--border);\r\n font-family:var(--font-title);\r\n font-size:13px;\r\n text-transform:uppercase;\r\n letter-spacing:0.08em;\r\n color:var(--muted);\r\n }\r\n .panel-bd{ padding:14px; }\r\n .share-row{\r\n display:flex;\r\n gap:10px;\r\n align-items:center;\r\n flex-wrap:nowrap;\r\n overflow:auto;\r\n padding-bottom:2px;\r\n }\r\n .icon-btn{\r\n width:44px; height:44px;\r\n border-radius:999px;\r\n border:1px solid var(--border);\r\n background:#fff;\r\n display:inline-flex;\r\n align-items:center;\r\n justify-content:center;\r\n cursor:pointer;\r\n flex:0 0 auto;\r\n overflow:hidden;\r\n }\r\n .icon-btn:hover{ background:#f1f2f3; }\r\n .icon{\r\n width:18px; height:18px;\r\n max-width:18px; max-height:18px;\r\n min-width:18px; min-height:18px;\r\n fill:#111213;\r\n display:block;\r\n }\r\n .cta{\r\n background:var(--panel-soft);\r\n border:1px solid var(--border);\r\n border-radius:var(--radius);\r\n padding:14px;\r\n }\r\n .cta h4{\r\n font-family:var(--font-title);\r\n margin:0 0 8px;\r\n font-size:16px;\r\n color:var(--text);\r\n }\r\n .cta p{\r\n margin:0 0 12px;\r\n font-size:14px;\r\n color:var(--muted);\r\n }\r\n .btn-black{\r\n display:inline-flex;\r\n align-items:center;\r\n justify-content:center;\r\n padding:8px 16px;\r\n border-radius:4px;\r\n background:#333333;\r\n color:var(--btnText);\r\n border:1px solid #000;\r\n font-size:14px;\r\n font-weight:600;\r\n cursor:pointer;\r\n text-decoration:none;\r\n }\r\n .btn-black:hover{\r\n background:#000;\r\n color:#ffffff;\r\n text-decoration:none;\r\n }\r\n .footer{\r\n margin-top:22px;\r\n text-align:center;\r\n font-size:13px;\r\n color:var(--muted2);\r\n }\r\n .toast{\r\n position:fixed;\r\n left:50%;\r\n bottom:18px;\r\n transform:translateX(-50%);\r\n background:#111213;\r\n color:#fff;\r\n padding:10px 12px;\r\n border-radius:999px;\r\n font-size:13px;\r\n opacity:0;\r\n pointer-events:none;\r\n transition:opacity 160ms ease, transform 160ms ease;\r\n z-index:9999;\r\n }\r\n .toast.show{\r\n opacity:1;\r\n transform:translateX(-50%) translateY(-2px);\r\n }\r\n\r\n @media (max-width: 768px){\r\n .article .article-inner{\r\n padding: 20px 16px !important;\r\n max-width: 100% !important;\r\n }\r\n .container{\r\n padding: 16px 12px 60px !important;\r\n }\r\n .data-table{ font-size:12px; }\r\n .data-table th, .data-table td{ padding:8px 10px; }\r\n }\r\n <\/style>\r\n<\/head>\r\n\r\n<body>\r\n <div class=\"container\">\r\n\r\n <!-- HERO -->\r\n <section class=\"hero\">\r\n <div class=\"hero-media\" role=\"img\" aria-label=\"Specification framework for biophilic acoustic wall systems\"><\/div>\r\n <div class=\"hero-content\">\r\n <span class=\"kicker\"><span class=\"kicker-dot\"><\/span> SPECIFICATION FRAMEWORK<\/span>\r\n\r\n <h1>How to Specify Biophilic Acoustic Wall Systems in 5 Steps<\/h1>\r\n\r\n <p class=\"subtitle\">\r\n A repeatable decision framework for architects, acousticians, and consultants - from acoustic brief to installed system. Covers performance data, fire compliance, and certification mapping.\r\n <\/p>\r\n\r\n <div class=\"meta\" aria-label=\"Meta information\">\r\n <span class=\"pill\"><strong>12 min read<\/strong><\/span>\r\n <span class=\"pill\">Published: <strong>Feb 2026<\/strong><\/span>\r\n <span class=\"pill\">Topics: <strong>Specification<\/strong>, <strong>Acoustics<\/strong>, <strong>Biophilic Design<\/strong><\/span>\r\n <\/div>\r\n\r\n <div class=\"tags\" aria-label=\"Topics tags\">\r\n <span class=\"tag\">Acoustic Wall Specification<\/span>\r\n <span class=\"tag\">NRC Ratings<\/span>\r\n <span class=\"tag\">Preserved Green Walls<\/span>\r\n <span class=\"tag\">Cork Acoustic Tiles<\/span>\r\n <span class=\"tag\">A&D Guidance<\/span>\r\n <\/div>\r\n <\/div>\r\n <\/section>\r\n\r\n <div class=\"grid\">\r\n <!-- ARTICLE -->\r\n <article class=\"article\" id=\"article\">\r\n <div class=\"article-inner\">\r\n\r\n <div class=\"notice\">\r\n <strong>Intent:<\/strong> This article provides a repeatable specification process for project teams evaluating biophilic acoustic solutions. It consolidates acoustic performance, fire safety, and certification considerations into a single decision path - from brief to installation. It connects to three companion articles that cover each dimension in depth.\r\n <\/div>\r\n\r\n <!-- TOC -->\r\n <details class=\"toc-details\" open>\r\n <summary>\r\n <span>Table of contents<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <nav class=\"toc\">\r\n <a href=\"#sec-1\">Why acoustic specification for biophilic systems is different<\/a>\r\n <a href=\"#sec-2\">The 5-step framework - overview<\/a>\r\n <a href=\"#sec-3\">Step 1 - How to define acoustic targets for interior spaces<\/a>\r\n <a href=\"#sec-4\">Step 2 - Choosing between moss, cork, and preserved foliage<\/a>\r\n <a href=\"#sec-5\">Step 3 - Fire classification for preserved green wall systems<\/a>\r\n <a href=\"#sec-6\">Step 4 - How biophilic acoustics contribute to LEED v5, BREEAM, and WELL<\/a>\r\n <a href=\"#sec-7\">Step 5 - What a complete wall system specification includes<\/a>\r\n <a href=\"#sec-8\">In practice: Wisecom Paris - measured acoustic improvement<\/a>\r\n <a href=\"#sec-9\">Acoustic performance data: Greenmood product reference<\/a>\r\n <a href=\"#sec-10\">Specification scenarios by space type<\/a>\r\n <a href=\"#sec-11\">Documentation provided at each project stage<\/a>\r\n <a href=\"#sec-12\">Specification checklist<\/a>\r\n <a href=\"#sec-13\">Frequently asked questions<\/a>\r\n <a href=\"#sec-14\">Related A&D guidance<\/a>\r\n <\/nav>\r\n <\/details>\r\n\r\n <!-- =========================================== -->\r\n <!-- SECTION 1 -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-1\">#Why acoustic specification for biophilic systems is different<\/h2>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> The specification gap isn't product availability - it's process clarity. Acoustic data, fire classification, and certification credits must be addressed together, not sequentially.\r\n <\/div>\r\n\r\n <p>\r\n Specifying biophilic acoustic solutions should be straightforward. In practice, it rarely is.\r\n <\/p>\r\n <p>\r\n Project teams face a consistent set of obstacles: acoustic data that was tested under conditions that don't match the project, fire classifications that apply to isolated materials but not to installed assemblies, sustainability claims that don't map to any recognized certification framework, and product documentation that focuses on aesthetics while leaving performance unsubstantiated.\r\n <\/p>\r\n <p>\r\n The result is a specification process driven by assumption rather than evidence. Materials are selected for how they look, not how they perform. Fire safety is addressed late - sometimes after procurement. Certification contributions are discovered retroactively, or missed entirely.\r\n <\/p>\r\n <p>\r\n <span class=\"leadline\">This article offers a different approach.<\/span> A structured, 5-step decision framework that moves from the acoustic brief to the complete system specification - with fire compliance, certification mapping, and documentation built into the process from the start.\r\n <\/p>\r\n\r\n <div class=\"quote\">\r\n <strong>The specification gap is not product availability. It is process clarity.<\/strong> Most preserved biophilic acoustic products perform well. The challenge is documenting that performance in a way that satisfies every stakeholder - from the acoustician to the fire consultant to the sustainability advisor.\r\n <\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- SECTION 2 - FRAMEWORK OVERVIEW -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-2\">#The 5-step specification framework<\/h2>\r\n <h3>From acoustic brief to installed system<\/h3>\r\n\r\n <div class=\"framework-overview\">\r\n <div class=\"fw-step\">\r\n <span class=\"fw-num\">1<\/span>\r\n <span class=\"fw-label\">Define acoustic target<\/span>\r\n <\/div>\r\n <div class=\"fw-step\">\r\n <span class=\"fw-num\">2<\/span>\r\n <span class=\"fw-label\">Select material family<\/span>\r\n <\/div>\r\n <div class=\"fw-step\">\r\n <span class=\"fw-num\">3<\/span>\r\n <span class=\"fw-label\">Verify fire compliance<\/span>\r\n <\/div>\r\n <div class=\"fw-step\">\r\n <span class=\"fw-num\">4<\/span>\r\n <span class=\"fw-label\">Map to certifications<\/span>\r\n <\/div>\r\n <div class=\"fw-step\">\r\n <span class=\"fw-num\">5<\/span>\r\n <span class=\"fw-label\">Specify as system<\/span>\r\n <\/div>\r\n <\/div>\r\n\r\n <p>\r\n Each step builds on the previous one. Skipping a step - or reversing the order - is where most specification issues originate. Selecting a product before defining the acoustic target leads to solutions that look right but underperform. Addressing fire compliance after procurement leads to costly substitutions or project delays.\r\n <\/p>\r\n <p>\r\n The framework applies to any biophilic acoustic material. This article illustrates each step with Greenmood's preserved systems - <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a>, <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a>, <a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Forest<\/a>, <a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a>, and <a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Acoustic Tiles<\/a> - where acoustic, fire, and sustainability data is available for each step.\r\n <\/p>\r\n\r\n <!-- =========================================== -->\r\n <!-- STEP 1 -->\r\n <!-- =========================================== -->\r\n <div class=\"step-header\" id=\"sec-3\">\r\n <span class=\"step-badge\">1<\/span>\r\n <h2>How to define acoustic targets for interior spaces<\/h2>\r\n <\/div>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> Start with the space, not the product. Define target RT60, assess current conditions, calculate required absorptive surface area.\r\n <\/div>\r\n\r\n <p>\r\n Every acoustic specification begins with a question: what does this space need to sound like?\r\n <\/p>\r\n <p>\r\n The answer depends on how the space will be used, how many people will occupy it, what surfaces already exist, and what level of speech clarity or acoustic comfort is expected.\r\n <\/p>\r\n\r\n <p><span class=\"leadline\">The two metrics that matter most for interior acoustic comfort:<\/span><\/p>\r\n <ul>\r\n <li><strong>Reverberation Time (RT60)<\/strong> - How long sound persists in a space after the source stops. For open offices, the target is typically 0.5\u20130.8 seconds. For meeting rooms, 0.4\u20130.6 seconds. For hospitality lobbies, acceptable ranges are wider but still require control.<\/li>\r\n <li><strong>Background Noise Level<\/strong> - Measured in dB(A). Most offices exceed 45 dB(A), which is above the threshold for sustained concentration. Reducing reverberation directly impacts perceived noise, even when the source volume remains constant.<\/li>\r\n <\/ul>\r\n\r\n <p>Before selecting any material, the project team should establish:<\/p>\r\n\r\n <div class=\"keytakeaways\">\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div>The target RT60 for each zone or room type<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div>The current acoustic condition - measured or estimated based on existing finishes<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div>The absorptive surface area required to reach the target<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div>Which surfaces are available for treatment - walls, ceilings, suspended elements, or freestanding screens<\/div><\/div>\r\n <\/div>\r\n\r\n <p>\r\n A common rule of thumb: in a typical open-plan office of 200 m\u00b2, reducing RT60 from 1.2 seconds to 0.6 seconds may require approximately 60\u201380 m\u00b2 of absorptive surface with an NRC above 0.65, depending on existing finishes and room geometry. This number should be validated by an acoustician during design development, but it provides a useful starting point for feasibility conversations.\r\n <\/p>\r\n <p>\r\n This step is not about choosing a product. It is about defining what the product must achieve.\r\n <\/p>\r\n\r\n <!-- =========================================== -->\r\n <!-- STEP 2 -->\r\n <!-- =========================================== -->\r\n <div class=\"step-header\" id=\"sec-4\">\r\n <span class=\"step-badge\">2<\/span>\r\n <h2>Choosing between moss, cork, and preserved foliage for acoustic performance<\/h2>\r\n <\/div>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> delivers the highest absorption (NRC 0.73). <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> provides mid-range absorption with visual depth (NRC 0.65). <a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Tiles<\/a> offer modular, design-led acoustic solutions.\r\n <\/div>\r\n\r\n <p>\r\n Once the acoustic target is defined, the next decision is which material family best addresses both the performance requirement and the design intent.\r\n <\/p>\r\n <p>\r\n In biophilic acoustic design, three material families are most commonly specified: preserved moss, preserved foliage, and natural cork. Each absorbs sound at different rates, at different frequency profiles, and each suits different project contexts.\r\n <\/p>\r\n\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Material<\/th>\r\n <th>NRC<\/th>\r\n <th>ISO Class<\/th>\r\n <th>Best application<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a><\/strong><\/td>\r\n <td>0.73<\/td>\r\n <td>D (ISO 11654)<\/td>\r\n <td>Large surfaces, ceilings, open offices, atriums - highest absorption in the collection<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a><\/strong><\/td>\r\n <td>0.65<\/td>\r\n <td>C (ISO 11654)<\/td>\r\n <td>Feature walls, lounges, corridors, hospitality - mid-range absorption with visual depth<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Acoustic Tiles<\/a><\/strong><br>(<a href=\"https:\/\/greenmood.se\/cork-wall\/parenthese\/\">Parenth\u00e8se<\/a>, <a href=\"https:\/\/greenmood.se\/cork-wall\/sillon\/\">Sillon<\/a>, <a href=\"https:\/\/greenmood.se\/cork-wall\/brickx\/\">Brickx<\/a>, <a href=\"https:\/\/greenmood.se\/cork-wall\/morse\/\">Morse<\/a>)<\/td>\r\n <td>Tested ISO 11654<\/td>\r\n <td>Tested<\/td>\r\n <td>Meeting rooms, branded spaces, modular walls - designed by Alain Gilles in four architectural patterns<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a><\/strong><\/td>\r\n <td>System-level<\/td>\r\n <td>Part of system<\/td>\r\n <td>Background textures, mixed compositions - used in <a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Forest<\/a> and custom combinations<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <p><span class=\"leadline\">The selection depends on three factors:<\/span><\/p>\r\n\r\n <!-- IMAGE: Material comparison - 3 columns -->\r\n <div class=\"article-img-grid\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/ball-moss_texture.webp\" alt=\"Ball Moss preserved green wall - NRC 0.73, highest acoustic absorption\" \/>\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/velvet-leaf_texture.webp\" alt=\"Velvet Leaf preserved green wall - NRC 0.65, visual depth with mid-range absorption\" \/>\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/cork-tiles_texture.webp\" alt=\"Cork acoustic wall tiles by Alain Gilles - modular design-led acoustic solution\" \/>\r\n <span class=\"article-img-grid-caption\">Left to right: Ball Moss (NRC 0.73) \u00b7 Velvet Leaf (NRC 0.65) \u00b7 Cork Acoustic Tiles - three material families, each suited to different acoustic and design requirements.<\/span>\r\n <\/div>\r\n <ul>\r\n <li><strong>Performance priority.<\/strong> If the primary goal is maximum sound absorption per square meter, <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> at NRC 0.73 delivers the highest absorption. For moderate absorption with distinctive visual impact, <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> at NRC 0.65 provides strong mid-frequency performance with visual complexity. For modular applications, <a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Acoustic Tiles<\/a> combine pattern flexibility with tested acoustic data.<\/li>\r\n <li><strong>Design language.<\/strong> Cork tiles offer four architectural patterns - <a href=\"https:\/\/greenmood.se\/cork-wall\/parenthese\/\">Parenth\u00e8se<\/a>, <a href=\"https:\/\/greenmood.se\/cork-wall\/sillon\/\">Sillon<\/a>, <a href=\"https:\/\/greenmood.se\/cork-wall\/brickx\/\">Brickx<\/a>, and <a href=\"https:\/\/greenmood.se\/cork-wall\/morse\/\">Morse<\/a> - designed by Alain Gilles, where acoustic performance integrates into a deliberate design vocabulary. Preserved moss and <a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Forest<\/a> compositions offer organic, textural qualities that cannot be replicated with synthetic alternatives.<\/li>\r\n <\/ul>\r\n\r\n <!-- IMAGE: Cork tile patterns - 4 designs by Alain Gilles -->\r\n <div class=\"article-img-wrap\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/cork-patterns.webp\" alt=\"Four cork acoustic tile patterns by Alain Gilles - Parenth\u00e8se, Sillon, Brickx, and Morse\" style=\"width:100%; border-radius:12px; display:block;\" \/>\r\n <p class=\"article-img-caption\">Cork Acoustic Tiles - four architectural patterns by Alain Gilles: Parenth\u00e8se, Sillon, Brickx, and Morse. Modular wall systems where acoustic performance meets design intent.<\/p>\r\n <\/div>\r\n\r\n <ul>\r\n <li><strong>Application context.<\/strong> Ceilings and large open walls favour <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> for uniform absorption. Branded environments and meeting rooms favour <a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork<\/a> for pattern control. Mixed compositions using multiple foliage types - as in the <a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Forest<\/a> collection - create visual depth while maintaining system-level acoustic integrity.<\/li>\r\n <\/ul>\r\n\r\n <p>\r\n At this stage, the specification should include the material family, the target surface area, and the expected NRC contribution - validated against the acoustic target established in Step 1.\r\n <\/p>\r\n\r\n <!-- =========================================== -->\r\n <!-- STEP 3 -->\r\n <!-- =========================================== -->\r\n <div class=\"step-header\" id=\"sec-5\">\r\n <span class=\"step-badge\">3<\/span>\r\n <h2>Fire classification requirements for preserved green wall systems<\/h2>\r\n <\/div>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> Verify fire compliance before the product enters the specification - not after. Demand system-level test data. Greenmood systems: B-S2-d0 (EU\/UK) \/ FSI 0, SDI 15 (US).\r\n <\/div>\r\n\r\n <p>\r\n Fire compliance should be confirmed before a product enters the specification - not after procurement. This is the step most often deferred, and the one most likely to cause project delays or forced substitutions.\r\n <\/p>\r\n <p>\r\n The critical distinction, covered in depth in our <a href=\"https:\/\/greenmood.se\/ad-guidance\/green-wall-systems-fire-safety-responsibility\/\">fire safety guidance<\/a>, is between material-level testing and system-level testing. A fire test on a flat moss sample does not represent the performance of a complete wall assembly with backing, adhesive, frame, and mounting.\r\n <\/p>\r\n\r\n <p class=\"leadline\">Four questions to verify fire documentation:<\/p>\r\n\r\n <div class=\"keytakeaways\">\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>What exactly was tested?<\/strong> - The complete assembly, or an isolated material sample?<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>In what configuration?<\/strong> - Flat on a test bench, or in a mounting arrangement representative of the intended installation?<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Under which standard?<\/strong> - EN 13501-1 (EU\/UK), ASTM E84 (US), or another regional framework?<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Does this reflect the installed condition?<\/strong> - Will the actual project installation match the tested configuration?<\/div><\/div>\r\n <\/div>\r\n\r\n <p class=\"leadline\">Greenmood fire classifications (system-level):<\/p>\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Standard<\/th>\r\n <th>Classification<\/th>\r\n <th>Region<\/th>\r\n <th>Basis<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td>EN 13501-1<\/td>\r\n <td><strong>B-S2-d0<\/strong><\/td>\r\n <td>EU \/ UK<\/td>\r\n <td>Complete assembly tested<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>ASTM E84<\/td>\r\n <td><strong>FSI 0 \/ SDI 15<\/strong><\/td>\r\n <td>US \/ North America<\/td>\r\n <td>Complete assembly tested<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <p>\r\n These classifications apply to the installed system - not to individual material samples. If any of these conditions are unclear for a product under consideration, the specification is not ready to proceed.\r\n <\/p>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/green-wall-systems-fire-safety-responsibility\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Related: Green Wall Systems, Fire Safety & Responsibility<\/strong>\r\n <span>Full guidance on system-level fire testing, living vs preserved distinctions, and specification responsibility.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <!-- =========================================== -->\r\n <!-- STEP 4 -->\r\n <!-- =========================================== -->\r\n <div class=\"step-header\" id=\"sec-6\">\r\n <span class=\"step-badge\">4<\/span>\r\n <h2>How biophilic acoustic products contribute to LEED v5, BREEAM, and WELL credits<\/h2>\r\n <\/div>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> Preserved biophilic systems can contribute to 3 credit families simultaneously - IEQ (acoustics), Materials (natural sourcing), and Biophilic Quality. Zero-maintenance systems simplify operational documentation.\r\n <\/div>\r\n\r\n <p>\r\n Many projects today pursue environmental or wellness certification - LEED, BREEAM, WELL, or regional equivalents. Biophilic acoustic solutions can contribute to multiple credit categories when properly documented, but this contribution needs to be identified at specification stage, not retroactively.\r\n <\/p>\r\n\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Credit category<\/th>\r\n <th>How biophilic acoustics contribute<\/th>\r\n <th>Required documentation<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong>Indoor Environmental Quality<\/strong><br>(LEED EQ \/ BREEAM Hea \/ WELL Sound)<\/td>\r\n <td>Certified sound absorption data (<a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> NRC 0.73, <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> NRC 0.65). Contribution to RT60 reduction. Improved speech clarity and occupant comfort.<\/td>\r\n <td>NRC test reports (ISO 11654). In-situ measurement data when available.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Materials & Resources<\/strong><br>(LEED MR \/ BREEAM Mat)<\/td>\r\n <td>Natural, preserved materials with traceable sourcing. Extended lifecycle with zero replacement. No synthetic components in primary foliage. Cork bark harvested without cutting trees (renewable every 9 years).<\/td>\r\n <td>Material sourcing documentation. Lifecycle data. Preservation process description.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Biophilic Quality<\/strong><br>(LEED v5 Connecting with Nature \/ WELL Mind)<\/td>\r\n <td>Direct, non-representational connection to nature using real plant material. Sensory richness and visual complexity. Alignment with 12 biophilic attributes recognized by LEED v5.<\/td>\r\n <td>Product composition documentation. Biophilic attribute mapping. Installation photography.<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <p>\r\n The operational advantage of preserved systems in certification contexts is significant. Unlike living installations, preserved walls require no irrigation logs, no plant replacement records, no seasonal maintenance schedules, and no ongoing horticultural management documentation. This simplifies the most time-consuming element of certification: operational compliance over the building lifecycle.\r\n <\/p>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/sustainability-biophilic-acoustics-leed-v5\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Related: Sustainability, Biophilic Acoustics & LEED v5<\/strong>\r\n <span>Detailed credit mapping for LEED v5, BREEAM, and WELL. The documentation advantage of preserved systems.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <!-- =========================================== -->\r\n <!-- STEP 5 -->\r\n <!-- =========================================== -->\r\n <div class=\"step-header\" id=\"sec-7\">\r\n <span class=\"step-badge\">5<\/span>\r\n <h2>What a complete biophilic wall system specification includes<\/h2>\r\n <\/div>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> A product name is not a specification. A complete spec includes: product identity, panel construction, acoustic data, fire classification, dimensions, installation method, maintenance protocol, and certification documentation.\r\n <\/div>\r\n\r\n <p>\r\n The final step is where most specification documents fall short. They name a product - \"preserved moss wall\" - without defining the system: the backing, the mounting, the substrate interface, the edge conditions, the maintenance protocol (or absence of one).\r\n <\/p>\r\n\r\n <p><span class=\"leadline\">A complete specification for a biophilic acoustic system includes:<\/span><\/p>\r\n\r\n <div class=\"keytakeaways\">\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Product identity.<\/strong> Material family, foliage composition, finish reference, and pattern. Example: <a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Sparse Forest<\/a>, Lichen Mentha-54, <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> + <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> + <a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a> in swirl pattern.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Panel construction.<\/strong> Backing material and thickness (e.g., MDF 1\/4\"), adhesive system, edge treatment.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Acoustic data.<\/strong> NRC rating, ISO classification, test standard, and test configuration - including substrate and air gap conditions.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Fire classification.<\/strong> Standard, classification, and confirmation that testing reflects the installed assembly (B-S2-d0 \/ FSI 0 \/ SDI 15).<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Dimensional specification.<\/strong> Panel dimensions per wall, total surface area, and any custom fabrication requirements - including open\/wrap corners and non-standard geometries.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Installation requirements.<\/strong> Mounting method, wall preparation, alignment tolerances, and site conditions.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Maintenance protocol.<\/strong> For preserved systems: no irrigation, no replacement schedule, no ongoing horticultural maintenance. Document what is <em>not<\/em> required - it matters for operational planning and lifecycle costing.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Certification documentation.<\/strong> Which credits the system contributes to, and which supporting documents are provided by the manufacturer.<\/div><\/div>\r\n <\/div>\r\n\r\n <p>\r\n When a green wall is specified as a system - with acoustic data, fire classification, dimensional precision, and certification mapping - it stops being a decorative choice and becomes a documented, defensible architectural element.\r\n <\/p>\r\n\r\n <!-- IMAGE: Installation detail \/ system assembly -->\r\n <div class=\"article-img-wrap\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/installation-detail.webp\" alt=\"Preserved green wall system installation - custom panel fabrication with wrap corner detail\" style=\"width:100%; border-radius:12px; display:block;\" \/>\r\n <p class=\"article-img-caption\">System-level specification in practice: custom-fabricated panels, precise dimensional fit, and wrap corners that follow the architecture - not generic flat panels trimmed on site.<\/p>\r\n <\/div>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/acoustic-material-performance\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Related: Acoustic & Material Performance<\/strong>\r\n <span>NRC methodology, absorption vs insulation, product comparison data, and lab vs real-world factors.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- CASE STUDY: WISECOM -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-8\">#In practice: the Wisecom project, Paris<\/h2>\r\n <h3>Measured acoustic improvement in a real workspace<\/h3>\r\n\r\n <div class=\"case-study\">\r\n <div class=\"case-study-header\">\r\n <span class=\"cs-dot\"><\/span> PROJECT SPOTLIGHT\r\n <\/div>\r\n <div class=\"case-study-body\">\r\n <h4>Wisecom - Paris, France<\/h4>\r\n <p>\r\n For the Wisecom project in Paris, acoustic comfort was the primary design driver. Noise levels across the open workspace were affecting focus, speech clarity, and day-to-day usability. The brief required reducing reverberation without compartmentalizing the space - no partitions, no layout changes.\r\n <\/p>\r\n <p>\r\n The solution, designed and delivered by Greenmood France, combined two complementary interventions:\r\n <\/p>\r\n <ul>\r\n <li><strong>Preserved <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> walls<\/strong> - contributing to broadband sound absorption while introducing a strong natural, biophilic dimension to the interior.<\/li>\r\n <li><strong>Suspended acoustic circles above workstations<\/strong> - improving reverberation control precisely where it matters most, while visually structuring the open space without physical barriers.<\/li>\r\n <\/ul>\r\n\r\n <div style=\"margin:16px 0;\">\r\n <span class=\"cs-metric\"><span class=\"cs-metric-value\">\u221210 dB<\/span> measured across the workspace<\/span>\r\n <span class=\"cs-metric\">Zero partitions added<\/span>\r\n <span class=\"cs-metric\">Zero layout changes<\/span>\r\n <\/div>\r\n\r\n <!-- IMAGE: Wisecom installation -->\r\n <div class=\"article-img-wrap\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/wisecom-project.webp\" alt=\"Wisecom Paris workspace - preserved Ball Moss walls and suspended acoustic circles, measured \u221210 dB acoustic improvement\" style=\"width:100%; border-radius:12px; display:block;\" \/>\r\n <p class=\"article-img-caption\">Wisecom, Paris - Ball Moss walls combined with suspended acoustic circles. Measured result: \u221210 dB across the open workspace.<\/p>\r\n <\/div>\r\n\r\n <p>\r\n The measured result - a 10 dB reduction across the workspace - represents a substantial improvement in acoustic comfort, with a direct impact on concentration, communication clarity, and perceived noise levels.\r\n <\/p>\r\n <p>\r\n This project illustrates the framework in action: an acoustic target was defined (reduce reverberation in open workspace), materials were selected for performance and design fit (<a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> walls + suspended elements), fire compliance was verified for the French market, and the solution was specified and installed as a complete system.\r\n <\/p>\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- PRODUCT REFERENCE TABLE -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-9\">#Acoustic performance data: Greenmood product reference<\/h2>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> All acoustic data is based on independent laboratory testing to ISO 11654. Fire classifications are based on system-level testing of complete assemblies. Full test reports available for download.\r\n <\/div>\r\n\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Product<\/th>\r\n <th>NRC<\/th>\r\n <th>ISO Class<\/th>\r\n <th>Fire (EU)<\/th>\r\n <th>Fire (US)<\/th>\r\n <th>Maintenance<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a><\/strong><\/td>\r\n <td>0.73<\/td>\r\n <td>D<\/td>\r\n <td>B-S2-d0<\/td>\r\n <td>FSI 0 \/ SDI 15<\/td>\r\n <td>None<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a><\/strong><\/td>\r\n <td>0.65<\/td>\r\n <td>C<\/td>\r\n <td>B-S2-d0<\/td>\r\n <td>FSI 0 \/ SDI 15<\/td>\r\n <td>None<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Sparse Forest<\/a><\/strong><br>(mixed composition)<\/td>\r\n <td>System-level<\/td>\r\n <td>System-level<\/td>\r\n <td>B-S2-d0<\/td>\r\n <td>FSI 0 \/ SDI 15<\/td>\r\n <td>None<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a><\/strong><\/td>\r\n <td>System-level<\/td>\r\n <td>System-level<\/td>\r\n <td>B-S2-d0<\/td>\r\n <td>FSI 0 \/ SDI 15<\/td>\r\n <td>None<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong><a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Acoustic Tiles<\/a><\/strong><br>(<a href=\"https:\/\/greenmood.se\/cork-wall\/parenthese\/\">Parenth\u00e8se<\/a> \u00b7 <a href=\"https:\/\/greenmood.se\/cork-wall\/sillon\/\">Sillon<\/a> \u00b7 <a href=\"https:\/\/greenmood.se\/cork-wall\/brickx\/\">Brickx<\/a> \u00b7 <a href=\"https:\/\/greenmood.se\/cork-wall\/morse\/\">Morse<\/a>)<\/td>\r\n <td>Tested ISO 11654<\/td>\r\n <td>Tested<\/td>\r\n <td>B-S2-d0<\/td>\r\n <td>FSI 0 \/ SDI 15<\/td>\r\n <td>None<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <!-- IMAGE: Close-up texture detail -->\r\n <div class=\"article-img-wrap\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/texture-closeup.webp\" alt=\"Close-up of preserved moss textures - Reindeer Moss, Ball Moss, and Velvet Leaf composition detail\" style=\"width:100%; border-radius:12px; display:block;\" \/>\r\n <p class=\"article-img-caption\">Preserved moss texture detail - the variation in density, depth, and surface structure across foliage types directly influences acoustic absorption characteristics.<\/p>\r\n <\/div>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- SPECIFICATION SCENARIOS -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-10\">#Specification scenarios by space type<\/h2>\r\n <h3>What to specify for open offices, meeting rooms, and lobbies<\/h3>\r\n\r\n <div class=\"section-tldr\">\r\n <strong>Key point:<\/strong> Different spaces require different acoustic targets, different material selections, and different surface area calculations. Here are three common scenarios.\r\n <\/div>\r\n\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Space type<\/th>\r\n <th>Target RT60<\/th>\r\n <th>Recommended product<\/th>\r\n <th>Indicative surface<\/th>\r\n <th>Notes<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong>Open-plan office<\/strong><br>(200 m\u00b2)<\/td>\r\n <td>0.5\u20130.8 s<\/td>\r\n <td><a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> walls + suspended acoustic elements<\/td>\r\n <td>60\u201380 m\u00b2 absorptive surface (NRC \u2265 0.65)<\/td>\r\n <td>Combine wall treatment with ceiling elements for best broadband absorption. See <a href=\"#sec-8\">Wisecom case study<\/a> for a measured example (\u221210 dB).<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Meeting room<\/strong><br>(30 m\u00b2)<\/td>\r\n <td>0.4\u20130.6 s<\/td>\r\n <td><a href=\"https:\/\/greenmood.se\/cork-wall\/\">Cork Tiles<\/a> (<a href=\"https:\/\/greenmood.se\/cork-wall\/sillon\/\">Sillon<\/a> or <a href=\"https:\/\/greenmood.se\/cork-wall\/parenthese\/\">Parenth\u00e8se<\/a>) or <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> feature wall<\/td>\r\n <td>8\u201314 m\u00b2 absorptive surface<\/td>\r\n <td>Cork tiles offer pattern control suited to branded or formal environments. Velvet Leaf provides a more organic alternative. Speech clarity is the priority metric.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Lobby \/ reception<\/strong><br>(100\u2013300 m\u00b2)<\/td>\r\n <td>0.8\u20131.2 s<\/td>\r\n <td><a href=\"https:\/\/greenmood.se\/green-walls\/forest\/\">Forest<\/a> composition or large-scale <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> feature<\/td>\r\n <td>Variable - depends on volume and ceiling height<\/td>\r\n <td>High-volume spaces require acoustic modeling. Forest compositions provide visual impact at scale while contributing system-level absorption. Custom fabrication (wrap corners, non-standard panels) often required.<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <p>\r\n These are indicative starting points. Greenmood provides project-specific acoustic estimates during the <a href=\"https:\/\/greenmood.se\/contact\/\">specification consultation process<\/a>, accounting for room geometry, existing finishes, and target performance levels.\r\n <\/p>\r\n\r\n <!-- IMAGE: Workspace application example -->\r\n <div class=\"article-img-wrap\">\r\n <img decoding=\"async\" src=\"https:\/\/greenmood.se\/wp-content\/uploads\/2026\/03\/workspace-application.webp\" alt=\"Preserved green wall installation in a professional workspace - acoustic treatment integrated into interior design\" style=\"width:100%; border-radius:12px; display:block;\" \/>\r\n <p class=\"article-img-caption\">Biophilic acoustic treatment integrated into a professional workspace - the specification scenarios above translate directly into installations like this.<\/p>\r\n <\/div>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- DOCUMENTATION BY STAGE -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-11\">#Documentation provided at each project stage<\/h2>\r\n\r\n <table class=\"data-table\">\r\n <thead>\r\n <tr>\r\n <th>Project stage<\/th>\r\n <th>Available from Greenmood<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td><strong>Concept \/ briefing<\/strong><\/td>\r\n <td>Product sample box. <a href=\"https:\/\/greenmood.se\/green-walls\/\">Configurator<\/a> access. Preliminary acoustic estimates based on room type and surface area.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Schematic design<\/strong><\/td>\r\n <td>Technical data sheets per product. NRC and fire classification summaries. Material composition descriptions.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Design development<\/strong><\/td>\r\n <td>Full acoustic test reports (ISO 11654). Fire test reports (EN 13501-1 \/ ASTM E84). <a href=\"https:\/\/greenmood.se\/downloads\/\">LEED Support Pack<\/a> with credit mapping. CAD and dimensional drawings.<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Construction documents<\/strong><\/td>\r\n <td>Panel-by-panel dimensional specifications. Installation guides. Custom fabrication documentation (wrap corners, non-standard panels).<\/td>\r\n <\/tr>\r\n <tr>\r\n <td><strong>Post-installation<\/strong><\/td>\r\n <td>As-built documentation. Maintenance protocol (confirming zero ongoing maintenance). Photography for certification submissions.<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- CHECKLIST -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-12\">#Specification checklist<\/h2>\r\n <h3>Verify before the product enters the specification document<\/h3>\r\n\r\n <div class=\"keytakeaways\">\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Acoustic target defined?<\/strong> - RT60 target per zone. Required absorptive surface area calculated. NRC threshold established.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Material family selected?<\/strong> - Product chosen based on NRC performance, design intent, and application context - not aesthetics alone.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Fire compliance verified?<\/strong> - Classification confirmed for the correct standard (EU\/UK\/US). System-level test report available. Configuration matches the intended installation.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Certification credits mapped?<\/strong> - Contributing credits identified (IEQ, Materials, Biophilic Quality). Supporting documentation confirmed available.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>System fully specified?<\/strong> - Product identity, panel construction, acoustic data, fire class, dimensions, installation method, and maintenance protocol all documented.<\/div><\/div>\r\n <div class=\"take\"><span class=\"take-bullet\"><\/span><div><strong>Documentation package complete?<\/strong> - Technical sheets, test reports, certification materials, and CAD files obtained or confirmed.<\/div><\/div>\r\n <\/div>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- FAQ -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-13\">#Frequently asked questions<\/h2>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>What NRC rating do I need for an open-plan office?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>For open-plan offices targeting an RT60 of 0.5\u20130.8 seconds, specify materials with NRC 0.65 or higher. <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> (NRC 0.73) and <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> (NRC 0.65) both meet this threshold. The required surface area depends on room geometry and existing finishes - as a starting point, plan for 30\u201340% of the ceiling or wall area to be treated with absorptive material.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>Do preserved moss walls require fire testing?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>Yes. Preserved moss walls must be fire-tested as complete assemblies - not just as isolated material samples. A test on a flat moss sample does not represent the fire behavior of the installed system. Greenmood systems are classified B-S2-d0 under EN 13501-1 (EU\/UK) and FSI 0 \/ SDI 15 under ASTM E84 (US), based on system-level testing. Full test reports are available on our <a href=\"https:\/\/greenmood.se\/downloads\/\">downloads page<\/a>.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>Can biophilic acoustic products contribute to LEED v5 credits?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>Yes. Preserved biophilic systems can contribute to multiple LEED v5 credit categories simultaneously: Indoor Environmental Quality (acoustic performance), Materials & Resources (natural sourcing, extended lifecycle), and the new Connecting with Nature biophilic quality credit. A <a href=\"https:\/\/greenmood.se\/downloads\/\">LEED Support Pack<\/a> is available with detailed credit mapping for consultants.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>What is the difference between sound absorption and sound insulation?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>Sound absorption reduces reverberation <em>within<\/em> a space - it is measured by NRC and improves speech clarity and acoustic comfort. Sound insulation blocks sound transmission <em>between<\/em> spaces - it is measured by STC. Preserved moss and <a href=\"https:\/\/greenmood.se\/cork-wall\/\">cork walls<\/a> provide sound absorption. They significantly improve acoustic conditions inside a room, but they are not designed to prevent sound from traveling to adjacent spaces. For more detail, see our <a href=\"https:\/\/greenmood.se\/ad-guidance\/acoustic-material-performance\/\">acoustic performance guide<\/a>.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>How much preserved moss wall do I need to improve acoustics?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>As a guideline, a 200 m\u00b2 open office may require 60\u201380 m\u00b2 of absorptive surface with NRC above 0.65 to reduce RT60 from 1.2 seconds to 0.6 seconds. The exact requirement depends on existing finishes, room geometry, and ceiling height. In the <a href=\"#sec-8\">Wisecom project<\/a>, combining <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> walls with suspended acoustic elements achieved a measured \u221210 dB reduction. Greenmood provides project-specific acoustic estimates during the <a href=\"https:\/\/greenmood.se\/contact\/\">specification process<\/a>.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <details class=\"faq-item\">\r\n <summary>\r\n <span>Do preserved green walls need ongoing maintenance?<\/span>\r\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\r\n <\/summary>\r\n <div class=\"faq-answer\">\r\n <p>No. Preserved green wall systems require zero irrigation, zero plant replacement, and zero ongoing horticultural maintenance. This also simplifies certification documentation - no irrigation logs, no seasonal maintenance records, no replacement schedules. The system performs as installed, for the expected lifespan, with no operational overhead.<\/p>\r\n <\/div>\r\n <\/details>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <!-- =========================================== -->\r\n <!-- RELATED GUIDANCE -->\r\n <!-- =========================================== -->\r\n <h2 id=\"sec-14\">#Related A&D guidance<\/h2>\r\n <p>\r\n This article consolidates specification thinking from three companion articles, each covering one dimension of the framework in depth:\r\n <\/p>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/green-wall-systems-fire-safety-responsibility\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M15.5 14h-.79l-.28-.27A6.47 6.47 0 0016 9.5 6.5 6.5 0 109.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Fire Safety & Responsibility<\/strong>\r\n <span>System-level fire testing, classification standards, living vs preserved distinctions, and the 4-question verification checklist.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/sustainability-biophilic-acoustics-leed-v5\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M15.5 14h-.79l-.28-.27A6.47 6.47 0 0016 9.5 6.5 6.5 0 109.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Sustainability, Biophilic Acoustics & LEED v5<\/strong>\r\n <span>Credit mapping for LEED v5, BREEAM, and WELL. The operational advantage of preserved systems in certification contexts.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <a class=\"crosslink\" href=\"https:\/\/greenmood.se\/ad-guidance\/acoustic-material-performance\/\">\r\n <div class=\"crosslink-icon\">\r\n <svg viewBox=\"0 0 24 24\"><path d=\"M15.5 14h-.79l-.28-.27A6.47 6.47 0 0016 9.5 6.5 6.5 0 109.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z\"\/><\/svg>\r\n <\/div>\r\n <div class=\"crosslink-text\">\r\n <strong>Acoustic & Material Performance<\/strong>\r\n <span>NRC methodology, absorption vs insulation, product comparison data, and lab vs real-world performance factors.<\/span>\r\n <\/div>\r\n <\/a>\r\n\r\n <div class=\"divider\"><\/div>\r\n\r\n <h2>Final takeaway<\/h2>\r\n <div class=\"quote\">\r\n <p style=\"margin:0;\">\r\n Biophilic acoustic solutions perform best when they are specified as systems - with acoustic targets, fire compliance, certification mapping, and documentation built into the process from the start.\r\n <strong>The framework is simple. The discipline to follow it is what separates specification from selection.<\/strong>\r\n <\/p>\r\n <\/div>\r\n\r\n <\/div>\r\n <\/article>\r\n\r\n <!-- SIDEBAR -->\r\n <aside class=\"sidebar\">\r\n <div class=\"sticky\">\r\n\r\n <!-- SHARE -->\r\n <section class=\"panel\">\r\n <div class=\"panel-hd\">Share<\/div>\r\n <div class=\"panel-bd\">\r\n <div class=\"share-row\">\r\n <a class=\"icon-btn\" id=\"share-linkedin\" href=\"#\" target=\"_blank\" rel=\"noopener\" aria-label=\"Share on LinkedIn\" title=\"LinkedIn\">\r\n <svg class=\"icon\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4.98 3.5C4.98 4.88 3.87 6 2.5 6S0 4.88 0 3.5 1.12 1 2.5 1s2.48 1.12 2.48 2.5zM.5 8h4V24h-4V8zm7 0h3.8v2.2h.05c.53-1 1.82-2.2 3.75-2.2 4.01 0 4.75 2.64 4.75 6.07V24h-4v-7.1c0-1.7-.03-3.88-2.36-3.88-2.36 0-2.72 1.84-2.72 3.75V24h-4V8z\"\/><\/svg>\r\n <\/a>\r\n <a class=\"icon-btn\" id=\"share-x\" href=\"#\" target=\"_blank\" rel=\"noopener\" aria-label=\"Share on X\" title=\"X\">\r\n <svg class=\"icon\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M18.9 2H22l-6.8 7.8L23.5 22h-6.6l-5.2-6.8L5.7 22H2.5l7.3-8.4L.9 2h6.8l4.7 6.1L18.9 2zm-1.2 18h1.8L7.2 3.9H5.3L17.7 20z\"\/><\/svg>\r\n <\/a>\r\n <a class=\"icon-btn\" id=\"share-facebook\" href=\"#\" target=\"_blank\" rel=\"noopener\" aria-label=\"Share on Facebook\" title=\"Facebook\">\r\n <svg class=\"icon\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M13.5 22v-8h2.7l.4-3.1h-3.1V9c0-.9.2-1.5 1.6-1.5h1.7V4.7c-.3 0-1.5-.1-2.8-.1-2.8 0-4.7 1.7-4.7 4.8v1.5H6.7V14h2.6v8h4.2z\"\/><\/svg>\r\n <\/a>\r\n <button class=\"icon-btn\" id=\"copy-link\" type=\"button\" aria-label=\"Copy link\" title=\"Copy link\">\r\n <svg class=\"icon\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M16 1H4c-1.1 0-2 .9-2 2v12h2V3h12V1zm4 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h12v14z\"\/><\/svg>\r\n <\/button>\r\n <\/div>\r\n <\/div>\r\n <\/section>\r\n\r\n <!-- CTA 1 -->\r\n <section class=\"panel\">\r\n <div class=\"panel-hd\">Start specifying<\/div>\r\n <div class=\"panel-bd\">\r\n <div class=\"cta\">\r\n <h4>Green Walls<\/h4>\r\n <p>Preserved biophilic wall systems documented as assemblies for professional interiors.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/green-walls\/\" target=\"_blank\" rel=\"noopener noreferrer\">Explore Green Walls<\/a>\r\n <\/div>\r\n <div style=\"height:12px\"><\/div>\r\n <div class=\"cta\">\r\n <h4>Cork Tile Collection<\/h4>\r\n <p>Four architectural patterns by Alain Gilles. Modular acoustic wall systems.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/cork-wall\/\" target=\"_blank\" rel=\"noopener noreferrer\">Explore Cork Tiles<\/a>\r\n <\/div>\r\n <div style=\"height:12px\"><\/div>\r\n <div class=\"cta\">\r\n <h4>Request a Sample Box<\/h4>\r\n <p>Evaluate materials in person. Includes moss, cork, and foliage samples with technical sheets.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/green-walls\/#sample-box\" target=\"_blank\" rel=\"noopener noreferrer\">Request Samples<\/a>\r\n <\/div>\r\n <div style=\"height:12px\"><\/div>\r\n <div class=\"cta\">\r\n <h4>Technical Consultation<\/h4>\r\n <p>Discuss your project with our specification team. Acoustic estimates, fire docs, and LEED support included.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\">Book a Consultation<\/a>\r\n <\/div>\r\n <\/div>\r\n <\/section>\r\n\r\n <!-- CTA 2 -->\r\n <section class=\"panel\">\r\n <div class=\"panel-hd\">Downloads<\/div>\r\n <div class=\"panel-bd\">\r\n <div class=\"cta\">\r\n <h4>LEED Support Pack<\/h4>\r\n <p>Credit mapping and material documentation for LEED v5 submissions.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/downloads\/\" target=\"_blank\" rel=\"noopener noreferrer\">Download PDF<\/a>\r\n <\/div>\r\n <div style=\"height:12px\"><\/div>\r\n <div class=\"cta\">\r\n <h4>Acoustic Performance Guide<\/h4>\r\n <p>NRC data, ISO classifications, and test methodology for all product lines.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/downloads\/\" target=\"_blank\" rel=\"noopener noreferrer\">Download PDF<\/a>\r\n <\/div>\r\n <div style=\"height:12px\"><\/div>\r\n <div class=\"cta\">\r\n <h4>Fire Test Reports<\/h4>\r\n <p>EN 13501-1 and ASTM E84 system-level test documentation.<\/p>\r\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/downloads\/\" target=\"_blank\" rel=\"noopener noreferrer\">Download Reports<\/a>\r\n <\/div>\r\n <\/div>\r\n <\/section>\r\n\r\n <\/div>\r\n <\/aside>\r\n <\/div>\r\n\r\n <div class=\"footer\">\u00a9 <span id=\"year\"><\/span> Greenmood<\/div>\r\n\r\n <\/div>\r\n\r\n <div class=\"toast\" id=\"toast\" role=\"status\" aria-live=\"polite\">Link copied<\/div>\r\n\r\n <script>\r\n const pageUrl = encodeURIComponent(window.location.href);\r\n const pageTitle = encodeURIComponent(document.title);\r\n document.getElementById(\"share-linkedin\").href = \"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=\" + pageUrl;\r\n document.getElementById(\"share-x\").href = \"https:\/\/twitter.com\/intent\/tweet?url=\" + pageUrl + \"&text=\" + pageTitle;\r\n document.getElementById(\"share-facebook\").href = \"https:\/\/www.facebook.com\/sharer\/sharer.php?u=\" + pageUrl;\r\n\r\n const toast = document.getElementById(\"toast\");\r\n document.getElementById(\"copy-link\").addEventListener(\"click\", async () => {\r\n try{\r\n await navigator.clipboard.writeText(window.location.href);\r\n toast.textContent = \"Link copied\";\r\n }catch(e){\r\n prompt(\"Copy this link:\", window.location.href);\r\n toast.textContent = \"Copied\";\r\n }\r\n toast.classList.add(\"show\");\r\n setTimeout(()=> toast.classList.remove(\"show\"), 1500);\r\n });\r\n\r\n document.querySelectorAll('.toc a[href^=\"#\"]').forEach(a => {\r\n a.addEventListener(\"click\", (e) => {\r\n const id = a.getAttribute(\"href\");\r\n const target = document.querySelector(id);\r\n if(!target) return;\r\n e.preventDefault();\r\n target.scrollIntoView({ behavior: \"smooth\", block: \"start\" });\r\n history.pushState(null, \"\", id);\r\n });\r\n });\r\n\r\n document.getElementById(\"year\").textContent = new Date().getFullYear();\r\n <\/script>\r\n<\/body>\r\n<\/html>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How to Specify Biophilic Acoustic Solutions - A 5-Step Decision Framework SPECIFICATION FRAMEWORK How to Specify Biophilic Acoustic Wall Systems in 5 Steps A repeatable decision framework for architects, acousticians, and consultants - from acoustic brief to installed system. Covers performance data, fire compliance, and certification mapping. 12 min read Published: Feb 2026 Topics: Specification, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-10065","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/posts\/10065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/comments?post=10065"}],"version-history":[{"count":0,"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/posts\/10065\/revisions"}],"wp:attachment":[{"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/media?parent=10065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/categories?post=10065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/greenmood.se\/se\/wp-json\/wp\/v2\/tags?post=10065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}