{"id":11599,"date":"2026-07-02T07:57:02","date_gmt":"2026-07-02T07:57:02","guid":{"rendered":"http:\/\/greenmood.se\/moss-walls-vs-acoustic-panels\/"},"modified":"2026-07-02T07:57:02","modified_gmt":"2026-07-02T07:57:02","slug":"moss-walls-vs-acoustic-panels","status":"publish","type":"post","link":"https:\/\/greenmood.se\/se\/moss-walls-vs-acoustic-panels\/","title":{"rendered":"Moss Walls vs Acoustic Panels"},"content":{"rendered":"\t\t
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\/* \u00e9quilibre \u00e9ditorial *\/\r\n border-radius:14px;\r\n overflow:hidden;\r\n border:1px solid rgba(0,0,0,0.08);\r\n background:#f6f7f8;\r\n}\r\n\r\n.image-pair figcaption{\r\n margin-top:12px;\r\n padding-bottom:24px;\r\n font-size:13px;\r\n color:#5c636e;\r\n}\r\n\r\n\r\n.image-pair__media img{\r\n width:100%;\r\n height:100%;\r\n object-fit:cover;\r\n display:block;\r\n}\r\n\r\n.image-pair figcaption{\r\n margin-top:10px;\r\n font-size:13px;\r\n color:#5c636e;\r\n}\r\n\r\n\/* Two-column on desktop *\/\r\n@media (min-width: 860px){\r\n .image-pair{\r\n grid-template-columns:1fr 1fr;\r\n align-items:stretch;\r\n }\r\n}\r\n\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 }\r\n <\/style>\r\n<\/head>\r\n\r\n\r\n<body>\n <div class=\"container\">\n\n <!-- HERO -->\n <section class=\"hero\">\n <div class=\"hero-media\" role=\"img\" aria-label=\"Moss walls compared with conventional acoustic panels using laboratory data\"><\/div>\n <div class=\"hero-content\">\n <span class=\"kicker\"><span class=\"kicker-dot\"><\/span> GUIDANCE FOR PROJECT TEAMS<\/span>\n\n <h1>Moss Walls vs Acoustic Panels<\/h1>\n\n <p class=\"subtitle\">\n An honest comparison based on laboratory data only: measured NRC values, absorption classes, fire indices, and what supplier claims often leave out.\n <\/p>\n\n <div class=\"meta\" aria-label=\"Meta information\">\n <span class=\"pill\"><strong>10 min read<\/strong><\/span>\n <span class=\"pill\">Published: <strong>Jul 2026<\/strong><\/span>\n <span class=\"pill\">Topics: <strong>Acoustics<\/strong>, <strong>Moss Walls<\/strong>, <strong>Specification<\/strong>, <strong>A&D<\/strong><\/span>\n <\/div>\n\n <div class=\"tags\" aria-label=\"Topics tags\">\n <span class=\"tag\">NRC<\/span>\n <span class=\"tag\">ISO 11654<\/span>\n <span class=\"tag\">ASTM E84<\/span>\n <span class=\"tag\">Preserved Moss<\/span>\n <span class=\"tag\">PET Panels<\/span>\n <\/div>\n <\/div>\n <\/section>\n\n <div class=\"grid\">\n <!-- ARTICLE -->\n <article class=\"article\" id=\"article\">\n <div class=\"article-inner\">\n\n <div class=\"notice\">\n <strong>Intent:<\/strong> This article compares preserved moss walls with conventional acoustic panels using measured laboratory data only.\n Every acoustic value below names the standard, the laboratory, and the public test report it comes from. No marketing numbers.\n <\/div>\n\n <section style=\"margin:20px 0 0; padding:18px 18px; border-radius:14px; background:#eef6f0; border:1px solid rgba(0,0,0,0.08);\" aria-label=\"Quick answer summary\">\n <strong>Quick answer:<\/strong> Acoustic panels usually win when the only objective is maximum sound absorption per square meter at the lowest cost. Preserved moss walls are the stronger choice when a project needs acoustic absorption, natural materiality, visual impact, and maintenance-free biophilic design in one surface. Ball Moss, for example, has been lab-tested at NRC 0.73, while Reindeer Moss measures NRC 0.35 and Greenmood cork tiles range from NRC 0.20 to 0.40 depending on the profile.\n <\/section>\n\n <!-- TOC -->\n <details class=\"toc-details\">\n <summary>\n <span>Table of contents<\/span>\n <span class=\"chev\" aria-hidden=\"true\"><\/span>\n <\/summary>\n <nav class=\"toc\">\n <a href=\"#sec-1\">Why this comparison is usually done wrong<\/a>\n <a href=\"#sec-2\">How sound absorption is actually measured<\/a>\n <a href=\"#sec-3\">What conventional acoustic panels achieve<\/a>\n <a href=\"#sec-4\">What preserved moss walls actually measure<\/a>\n <a href=\"#sec-5\">What cork acoustic tiles measure<\/a>\n <a href=\"#sec-6\">Red flags in supplier acoustic claims<\/a>\n <a href=\"#sec-7\">Beyond NRC: materials, fire data, and wellbeing<\/a>\n <a href=\"#sec-8\">When panels win, when moss wins<\/a>\n <a href=\"#sec-9\">Specification checklist<\/a>\n <a href=\"#sec-10\">Resources and test reports<\/a>\n <a href=\"#sec-faq\">Frequently asked questions<\/a>\n <a href=\"#sec-11\">Final takeaway<\/a>\n <\/nav>\n <\/details>\n\n <h2 id=\"sec-1\">#Why this comparison is usually done wrong<\/h2>\n <p>\n Search for \"moss walls vs acoustic panels\" and you will find confident numbers on both sides:\n moss absorption figures quoted without a standard, a laboratory, or a mounting configuration,\n and panel ratings measured with an air gap that the installed product will never have.\n <\/p>\n <p>\n The result is a comparison between a <span class=\"leadline\">marketing claim<\/span> and a\n <span class=\"leadline\">laboratory measurement<\/span>, which is not a comparison at all.\n <\/p>\n <div class=\"quote\">\n <strong>A number without a standard, a laboratory, and a test report is not acoustic data. It is copy.<\/strong>\n <\/div>\n\n <h2 id=\"sec-2\">#How sound absorption is actually measured<\/h2>\n <p>\n Credible absorption values come from reverberation room measurements following recognized standards:\n <span class=\"leadline\">ISO 354<\/span> for the measurement itself, <span class=\"leadline\">ISO 11654<\/span> for the\n weighted absorption coefficient and the absorption class (A to E), and <span class=\"leadline\">ASTM C423<\/span> for\n the NRC and SAA indicators used in North America.\n <\/p>\n <ul>\n <li><strong>NRC (Noise Reduction Coefficient):<\/strong> a four-frequency average of absorption, from 0.00 to 1.00.<\/li>\n <li><strong>Absorption class (ISO 11654):<\/strong> a letter from A (most absorbent) to E, weighted across a frequency curve.<\/li>\n <li><strong>Mounting matters:<\/strong> the same product can measure very differently direct-mounted versus with an air gap behind it. Always ask which configuration was tested.<\/li>\n <\/ul>\n <p>\n The two systems weight frequencies differently, so a Class D product can still carry a high NRC.\n That is not a contradiction. It is why serious suppliers publish both, with the report.\n <\/p>\n\n <p>\n For reference, <a href=\"https:\/\/www.iso.org\/standard\/19583.html\" target=\"_blank\" rel=\"noopener\">ISO 11654<\/a> is the international standard for rating the sound absorption of building products from ISO 354 measurements, and <a href=\"https:\/\/store.astm.org\/c0423-22.html\" target=\"_blank\" rel=\"noopener\">ASTM C423<\/a> defines the reverberation room method used to calculate NRC and SAA in North America.\n <\/p>\n\n <div style=\"overflow-x:auto; margin:22px 0;\">\n <table style=\"width:100%; border-collapse:collapse; font-size:14px; background:#fff; border:1px solid rgba(0,0,0,0.08); border-radius:14px; overflow:hidden;\">\n <thead>\n <tr style=\"background:#f6f7f8; text-align:left;\">\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Criteria<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Preserved moss walls<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Conventional acoustic panels<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Cork acoustic tiles<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>Best for<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Acoustic performance combined with biophilic impact<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Maximum absorption per square meter on a budget<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Natural, tactile wall finish<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>Typical acoustic profile<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Mid and high frequency absorption<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Broad absorption depending on thickness and mounting<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Moderate contribution, diffusive geometry<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>Lab-tested example<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Ball Moss NRC 0.73<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Often NRC 0.45 to 0.90+ depending on setup<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Morse NRC 0.40, Sillon NRC 0.30<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>Material story<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Preserved natural plants<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Usually PET felt or synthetic core<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Natural cork<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>Visual impact<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">High<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Medium, technical<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">High, tactile texture<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px;\"><strong>Maintenance<\/strong><\/td>\n <td style=\"padding:12px 14px;\">No water, light, or pruning<\/td>\n <td style=\"padding:12px 14px;\">Low<\/td>\n <td style=\"padding:12px 14px;\">Low<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h2 id=\"sec-3\">#What conventional acoustic panels achieve<\/h2>\n <p>\n Conventional interior acoustic panels, most commonly PET felt made from recycled plastic bottles, are effective absorbers.\n Advertised values typically range from NRC 0.45 for thin direct-mounted panels up to 0.90 or more for thick panels\n measured with an air gap behind them.\n <\/p>\n <p>\n Both ends of that range are real. The point is that the high numbers usually describe a specific mounting\n configuration, not the panel glued flat to a wall. If a datasheet quotes NRC 0.95, ask whether that was measured\n with an E-400 mounting (400 mm air cavity) or direct-mounted. The answer often explains half the number.\n <\/p>\n <p>\n Panels win on raw absorption per square meter and on price. What they do not offer is a natural material story:\n PET felt is plastic, and most spaces that choose it accept that trade-off knowingly.\n <\/p>\n\n <h2 id=\"sec-4\">#What preserved moss walls actually measure<\/h2>\n <p>\n Preserved moss is a genuinely absorbent material: soft, porous, and irregular, which is exactly what mid and high\n frequencies (the human speech range) respond to. But moss types differ widely, and honest data shows it.\n <\/p>\n <p>\n The values below were measured on the material itself in reverberation rooms, per ISO 354 \/ ISO 11654 and ASTM C423,\n by two accredited European laboratories: CARE-CEDIA at the University of Liege (Belgium) and Peutz bv (Netherlands).\n Every report is a public PDF.\n <\/p>\n\n <div style=\"overflow-x:auto; margin:22px 0;\">\n <table style=\"width:100%; border-collapse:collapse; font-size:14px; background:#fff; border:1px solid rgba(0,0,0,0.08); border-radius:14px; overflow:hidden;\">\n <thead>\n <tr style=\"background:#f6f7f8; text-align:left;\">\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Material<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">NRC<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Class (ISO 11654)<\/th>\n <th style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.08);\">Laboratory<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>0.73<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">D<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">CARE-CEDIA, University of Liege (report 2017\/7092)<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\"><strong>0.65<\/strong><\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">C<\/td>\n <td style=\"padding:12px 14px; border-bottom:1px solid rgba(0,0,0,0.06);\">Peutz bv (Netherlands)<\/td>\n <\/tr>\n <tr>\n <td style=\"padding:12px 14px;\"><a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a><\/td>\n <td style=\"padding:12px 14px;\"><strong>0.35<\/strong><\/td>\n <td style=\"padding:12px 14px;\">D<\/td>\n <td style=\"padding:12px 14px;\">CARE-CEDIA, University of Liege (report 2017\/7093)<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <p>\n Two things are worth noticing. First, <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss at NRC 0.73<\/a> sits inside the range of many conventional\n panels as actually installed, while offering a natural preserved plant surface without a plastic acoustic core.\n Second, Reindeer Moss measures 0.35. We publish that number anyway, because it is the measured one.\n Reindeer moss is often the type behind spectacular absorption claims elsewhere, usually quoted without a report.\n <\/p>\n\n <figure style=\"margin:26px 0;\">\n <img decoding=\"async\" src=\"https:\/\/greenmood.us\/wp-content\/uploads\/2025\/07\/Greenmood_ball-moss-gallery_01.webp\" alt=\"Ball Moss preserved acoustic wall panel\" loading=\"lazy\" style=\"width:100%; height:auto; display:block; border-radius:14px; border:1px solid rgba(0,0,0,0.08);\" \/>\n <figcaption style=\"margin-top:10px; font-size:13px; color:#5c636e;\">Ball Moss acoustic wall panel: preserved moss measured at NRC 0.73 (ISO 11654).<\/figcaption>\n <\/figure>\n\n <h2 id=\"sec-5\">#What cork acoustic tiles measure<\/h2>\n <p>\n Cork wall tiles are a different acoustic profile: denser, harder, and lower absorption than moss, with the benefit of\n being a durable, tactile, fully natural surface. Measured on the material per ISO 11654 by Peutz bv:\n <\/p>\n <ul>\n <li><a href=\"https:\/\/greenmood.se\/cork-wall\/morse\/\">Morse<\/a>: Class D, NRC 0.40<\/li>\n <li><a href=\"https:\/\/greenmood.se\/cork-wall\/sillon\/\">Sillon<\/a>: Class D, NRC 0.30<\/li>\n <li><a href=\"https:\/\/greenmood.se\/cork-wall\/parenthese\/\">Parenthese<\/a>: Class E, NRC 0.20<\/li>\n <li><a href=\"https:\/\/greenmood.se\/cork-wall\/brickx\/\">Brickx<\/a>: Class E, NRC 0.20<\/li>\n <\/ul>\n <p>\n Cork tiles are best specified as a contributing surface within a wider acoustic strategy, not as the primary absorber.\n Their sculpted geometry also diffuses reflections, which flat panels do not. For tailored configurations, see our <a href=\"https:\/\/greenmood.se\/custom-acoustic-cork-walls\/\">custom acoustic cork wall<\/a> options.\n <\/p>\n\n <figure style=\"margin:26px 0;\">\n <img decoding=\"async\" src=\"https:\/\/greenmood.us\/wp-content\/uploads\/2025\/08\/Greenmood_brickx-hero-02a.webp\" alt=\"Brickx acoustic cork wall panel installation\" loading=\"lazy\" style=\"width:100%; height:auto; display:block; border-radius:14px; border:1px solid rgba(0,0,0,0.08);\" \/>\n <figcaption style=\"margin-top:10px; font-size:13px; color:#5c636e;\">Brickx acoustic cork wall tiles, measured Class E, NRC 0.20 (Peutz bv).<\/figcaption>\n <\/figure>\n\n <h2 id=\"sec-6\">#Red flags in supplier acoustic claims<\/h2>\n <p>When you compare moss walls and acoustic panels, discard any number that comes with one of these:<\/p>\n <ul>\n <li><strong>No standard named.<\/strong> \"Absorbs up to 90% of sound\" is not ISO 354, ISO 11654, or ASTM C423.<\/li>\n <li><strong>No laboratory named.<\/strong> Accredited labs put their name on reports. Marketing departments do not.<\/li>\n <li><strong>No report available.<\/strong> If the PDF cannot be produced, the measurement may not exist.<\/li>\n <li><strong>No mounting configuration.<\/strong> An NRC without the tested mounting is half a number.<\/li>\n <li><strong>Decibel reduction claims for absorption products.<\/strong> \"Reduces noise by 10 dB\" mixes absorption with isolation, which are different problems solved by different constructions.<\/li>\n <\/ul>\n <div class=\"quote\">\n <strong>The fastest way to compare suppliers is to ask each one for the same three things: the standard, the lab, and the report.<\/strong>\n <\/div>\n\n <h2 id=\"sec-7\">#Beyond NRC: materials, fire data, and wellbeing<\/h2>\n <h3>Material composition<\/h3>\n <p>\n Most conventional acoustic panels are PET felt: recycled plastic, but plastic. Preserved moss walls are natural\n preserved plants on a wood-based backing, with no plastic acoustic core. For projects with material health,\n biophilic design, or sustainability targets, that difference is often the deciding factor.\n <\/p>\n <h3>Fire performance<\/h3>\n <p>\n Fire data follows the same rule as acoustic data: ask for the tested value. Greenmood preserved mosses are tested to\n ASTM E84 with a Flame Spread Index of 0 (Ball Moss: FSI 0, Smoke Developed Index 10; Reindeer Moss: FSI 0, SDI 15)\n and carry European classifications of B-s1-d0 and B-s2-d0. Full details and report references are in our\n <a href=\"https:\/\/greenmood.se\/fire-safety-and-biophilic-materials\/\">fire safety guide<\/a>.\n <\/p>\n <h3>Wellbeing<\/h3>\n <p>\n Acoustic panels treat sound. Moss walls treat sound and the visual environment at the same time. Research on\n biophilic interiors consistently links natural textures and greenery to lower perceived stress, which no NRC value\n captures. That is a benefit, not a substitute for absorption data, and it should be argued as such.\n <\/p>\n\n <p>\n For a deeper look at how nature-connected design affects human response, the <a href=\"https:\/\/www.terrapinbrightgreen.com\/report\/14-patterns\/\" target=\"_blank\" rel=\"noopener\">14 Patterns of Biophilic Design report by Terrapin Bright Green<\/a> remains the reference framework connecting biophilia to measurable outcomes in the built environment.\n <\/p>\n\n <h2 id=\"sec-8\">#When panels win, when moss wins<\/h2>\n <h3>Choose conventional panels when<\/h3>\n <ul>\n <li>You need maximum absorption per square meter on a tight budget<\/li>\n <li>Large ceiling or wall coverage is possible and aesthetics are secondary<\/li>\n <li>The reverberation problem is severe and surface area is limited<\/li>\n <\/ul>\n <h3>Choose preserved moss when<\/h3>\n <ul>\n <li>The wall must deliver absorption and design impact in one surface<\/li>\n <li>Material health and natural composition are project requirements<\/li>\n <li>The space serves people directly: reception, lounge, meeting, hospitality<\/li>\n <li>Maintenance-free greenery is wanted (no water, no light, no pruning)<\/li>\n <\/ul>\n <p>\n In practice, many of the best-performing interiors combine both: engineered absorbers where surface is cheap,\n biophilic absorbers where people actually spend their time.\n <\/p>\n\n <h2 id=\"sec-9\">#Specification checklist<\/h2>\n <p>Before signing off a moss wall or an acoustic panel package, confirm:<\/p>\n <div class=\"keytakeaways\">\n <div class=\"take\"><span class=\"take-bullet\"><\/span><span>Absorption values per ISO 354 \/ ISO 11654 or ASTM C423, with the test report<\/span><\/div>\n <div class=\"take\"><span class=\"take-bullet\"><\/span><span>The mounting configuration behind every quoted NRC<\/span><\/div>\n <div class=\"take\"><span class=\"take-bullet\"><\/span><span>Fire classification for your market (ASTM E84 indices or EN 13501 class), with the report<\/span><\/div>\n <div class=\"take\"><span class=\"take-bullet\"><\/span><span>Material composition: what the acoustic core actually is<\/span><\/div>\n <div class=\"take\"><span class=\"take-bullet\"><\/span><span>Coverage calculation: which surface area achieves the target reverberation time<\/span><\/div>\n <\/div>\n\n <h2 id=\"sec-10\">#Resources and test reports<\/h2>\n <p>Public documents referenced in this article:<\/p>\n <ul>\n <li><a href=\"https:\/\/greenmood.us\/wp-content\/uploads\/2025\/07\/Acoustic-Reports_Ball-Moss.pdf\" target=\"_blank\" rel=\"noopener\">Ball Moss acoustic test report (PDF)<\/a><\/li>\n <li><a href=\"https:\/\/greenmood.us\/wp-content\/uploads\/2026\/02\/greenmood_biophilic-acoustic-assemblies-%E2%80%93-specification-performance-guide.pdf\" target=\"_blank\" rel=\"noopener\">Specification & performance guide for biophilic acoustic assemblies (PDF)<\/a><\/li>\n <li><a href=\"https:\/\/greenmood.se\/acoustic-material-performance\/\">Acoustic & material performance: what really drives quiet interiors<\/a><\/li>\n <li><a href=\"https:\/\/greenmood.se\/fire-safety-and-biophilic-materials\/\">Fire safety and biophilic materials<\/a><\/li>\n <li><a href=\"https:\/\/greenmood.se\/downloads\/\">Download center: technical specification sheets and test reports<\/a><\/li>\n <\/ul>\n\n <h2 id=\"sec-faq\">#Frequently asked questions<\/h2>\n <details style=\"border:1px solid rgba(0,0,0,0.08); border-radius:14px; background:#fbfbfc; margin:0 0 12px; overflow:hidden;\">\n <summary style=\"cursor:pointer; padding:14px 16px; font-family:'Spezia','Poppins',serif; font-size:15px; color:#14171a;\">Are moss walls as acoustic as acoustic panels?<\/summary>\n <p style=\"padding:0 16px 16px; margin:0;\">Not always. Conventional panels usually offer higher absorption per square meter, especially when thick or installed with an air gap. However, <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> has been lab-tested at NRC 0.73, which places it within the range of many installed acoustic panels.<\/p>\n <\/details>\n <details style=\"border:1px solid rgba(0,0,0,0.08); border-radius:14px; background:#fbfbfc; margin:0 0 12px; overflow:hidden;\">\n <summary style=\"cursor:pointer; padding:14px 16px; font-family:'Spezia','Poppins',serif; font-size:15px; color:#14171a;\">Do moss walls replace acoustic panels?<\/summary>\n <p style=\"padding:0 16px 16px; margin:0;\">They can in some design-led spaces, but not always. Moss walls are best when acoustic comfort, natural materiality, and visual impact are required together. Severe reverberation problems may still need engineered absorbers.<\/p>\n <\/details>\n <details style=\"border:1px solid rgba(0,0,0,0.08); border-radius:14px; background:#fbfbfc; margin:0 0 12px; overflow:hidden;\">\n <summary style=\"cursor:pointer; padding:14px 16px; font-family:'Spezia','Poppins',serif; font-size:15px; color:#14171a;\">Which moss type performs best acoustically?<\/summary>\n <p style=\"padding:0 16px 16px; margin:0;\">Among Greenmood's tested moss products, <a href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\">Ball Moss<\/a> performs best acoustically, with NRC 0.73. <a href=\"https:\/\/greenmood.se\/green-walls\/velvet-leaf\/\">Velvet Leaf<\/a> measures NRC 0.65, while <a href=\"https:\/\/greenmood.se\/green-walls\/reindeer-moss\/\">Reindeer Moss<\/a> measures NRC 0.35.<\/p>\n <\/details>\n <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are moss walls as acoustic as acoustic panels?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not always. Conventional panels usually offer higher absorption per square meter, especially when thick or installed with an air gap. However, Ball Moss has been lab-tested at NRC 0.73, which places it within the range of many installed acoustic panels.\"}},{\"@type\":\"Question\",\"name\":\"Do moss walls replace acoustic panels?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They can in some design-led spaces, but not always. Moss walls are best when acoustic comfort, natural materiality, and visual impact are required together. Severe reverberation problems may still need engineered absorbers.\"}},{\"@type\":\"Question\",\"name\":\"Which moss type performs best acoustically?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Among Greenmood's tested moss products, Ball Moss performs best acoustically, with NRC 0.73. Velvet Leaf measures NRC 0.65, while Reindeer Moss measures NRC 0.35.\"}}]}<\/script>\n\n <h2 id=\"sec-11\">Final takeaway<\/h2>\n <div class=\"quote\">\n <p style=\"margin:0;\">\n Moss walls and acoustic panels are not rivals. They are different tools with different measured profiles.\n <strong>Compare them on lab data with named standards and public reports, and both will end up in the right place in your project.<\/strong>\n <\/p>\n <\/div>\n\n <\/div>\n <\/article>\n\n <!-- SIDEBAR -->\n <aside class=\"sticky\">\n <div>\n\n <!-- SHARE -->\n <section class=\"panel\">\n <div class=\"panel-hd\">Share<\/div>\n <div class=\"panel-bd\">\n <div class=\"share-row\">\n <a class=\"icon-btn\" id=\"share-linkedin\" href=\"#\" target=\"_blank\" rel=\"noopener\" aria-label=\"Share on LinkedIn\" title=\"LinkedIn\">\n <svg class=\"icon\" 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>\n <\/a>\n <a class=\"icon-btn\" id=\"share-x\" href=\"#\" target=\"_blank\" 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<\/section>\n\n <!-- CTA -->\n <section class=\"panel\">\n <div class=\"panel-hd\">Next steps<\/div>\n <div class=\"panel-bd\">\n\n <div class=\"cta\">\n <h4>Ball Moss Acoustic Walls<\/h4>\n <p>The highest measured absorption in our moss collection: NRC 0.73, lab-tested, maintenance-free.<\/p>\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/green-walls\/ball-moss\/\"\n target=\"_blank\" rel=\"noopener noreferrer\">Explore Ball Moss<\/a>\n <\/div>\n\n <div style=\"height:12px\"><\/div>\n\n <div class=\"cta\">\n <h4>Custom Acoustic Green Walls<\/h4>\n <p>Tailored preserved moss walls with documented acoustic performance for professional interiors.<\/p>\n <a class=\"btn-black\" href=\"https:\/\/greenmood.se\/custom-acoustic-green-walls\/\"\n target=\"_blank\" rel=\"noopener noreferrer\">Explore Green Walls<\/a>\n <\/div>\n\n <div style=\"height:12px\"><\/div>\n\n <div class=\"cta\">\n <h4>Specification & Performance Guide<\/h4>\n <p>\n A structured reference document designed to help project teams understand, specify,\n & validate biophilic acoustic assemblies based on real-world performance conditions.\n <\/p>\n <a class=\"btn-black\" href=\"https:\/\/greenmood.us\/wp-content\/uploads\/2026\/02\/greenmood_biophilic-acoustic-assemblies-%E2%80%93-specification-performance-guide.pdf\"\n target=\"_blank\" rel=\"noopener noreferrer\">Download specification guide<\/a>\n <\/div>\n\n <\/div>\n <\/section>\n\n <\/div>\n <\/aside>\n <\/div>\n\n <div class=\"footer\">\u00a9 <span id=\"year\"><\/span> Greenmood<\/div>\n\n <\/div>\n\n <div class=\"toast\" id=\"toast\" role=\"status\" aria-live=\"polite\">Link copied<\/div>\n\n <script>\n \/\/ Share links\n const pageUrl = encodeURIComponent(window.location.href);\n const pageTitle = encodeURIComponent(document.title);\n\n document.getElementById(\"share-linkedin\").href =\n \"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=\" + pageUrl;\n\n document.getElementById(\"share-x\").href =\n 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Greenmood","_seopress_titles_desc":"Moss walls vs acoustic panels compared with laboratory data only: measured NRC per ISO 11654 and ASTM C423, fire indices, mounting effects and a specification 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