{"id":2187,"date":"2026-10-20T08:00:00","date_gmt":"2026-10-20T08:00:00","guid":{"rendered":"https:\/\/biomattone.it\/?p=2187"},"modified":"2026-10-20T08:02:52","modified_gmt":"2026-10-20T08:02:52","slug":"biomattone-thermal-transmittance-reading-u-and-rt-for-each-format","status":"publish","type":"post","link":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/","title":{"rendered":"Biomattone\u00ae Thermal Transmittance: Reading U and Rt for Each Format"},"content":{"rendered":"<p class=\"wp-block-paragraph\">The thermal transmittance of the Biomattone measures how much heat passes through the wall, and it decreases with thickness: from U 0.5 W\/m\u00b2K for the BA8 to U 0.09 W\/m\u00b2K for the BA50. Thermal resistance (Rt), by contrast, increases from 1.99 to 11.53 m\u00b2K\/W.<\/p><h2 class=\"wp-block-heading\">At a glance<\/h2><ul class=\"wp-block-list\"><li>Thermal transmittance (U): how much heat passes through; the lower it is, the better the insulation.<\/li><li>Thermal resistance (Rt): how strongly the wall resists the flow of heat.<\/li><li>Values: U from 0.5 to 0.09 W\/m\u00b2K; Rt from 1.99 to 11.53 m\u00b2K\/W.<\/li><li>Material: thermal conductivity 0.044 W\/mK.<\/li><li>Source: Biomattone\u00ae technical data sheet NOV25.<\/li><\/ul><p class=\"wp-block-paragraph\"><em>Updated October 5, 2026. Data source: Biomattone\u00ae NOV25 technical data sheet.<\/em><\/p><h2 class=\"wp-block-heading\">In this article<\/h2><ul class=\"wp-block-list\"><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#cos-e\">What thermal transmittance and thermal resistance are<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#formati\">Biomattone thermal transmittance by format<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#leggere\">How to read the data sheet values<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#progetto\">Thermal transmittance and design<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#territorio\">Biomattone thermal transmittance in Brescia and Bolzano<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#faq\">FAQ about thermal transmittance<\/a><\/li><\/ul><h2 class=\"wp-block-heading\" id=\"cos-e\">What thermal transmittance and thermal resistance are<\/h2><p class=\"wp-block-paragraph\">U indicates how much heat flow passes through each square meter of wall and is measured in W\/m\u00b2K. A low value means better insulation.<\/p><p class=\"wp-block-paragraph\">Rt measures how strongly the wall resists the flow of heat and is measured in m\u00b2K\/W. The two values are linked: U is roughly the inverse of Rt.<\/p><h2 class=\"wp-block-heading\" id=\"formati\">Biomattone thermal transmittance by format<\/h2><p class=\"wp-block-paragraph\">In the technical data sheet you will find U and Rt for each format. For example, the BA30 has U 0.14 W\/m\u00b2K and Rt 6.99 m\u00b2K\/W.<\/p><figure class=\"wp-block-table\"><table><thead><tr><th>Format<\/th><th>Thickness (cm)<\/th><th>U (W\/m\u00b2K)<\/th><th>Rt (m\u00b2K\/W)<\/th><\/tr><\/thead><tbody><tr><td>BA8<\/td><td>8<\/td><td>0.5<\/td><td>1.99<\/td><\/tr><tr><td>BA12<\/td><td>12<\/td><td>0.34<\/td><td>2.9<\/td><\/tr><tr><td>BA20<\/td><td>20<\/td><td>0.21<\/td><td>4.71<\/td><\/tr><tr><td>BA25<\/td><td>25<\/td><td>0.17<\/td><td>5.85<\/td><\/tr><tr><td>BA30<\/td><td>30<\/td><td>0.14<\/td><td>6.99<\/td><\/tr><tr><td>BA36<\/td><td>36<\/td><td>0.12<\/td><td>8.35<\/td><\/tr><tr><td>BA40<\/td><td>40<\/td><td>0.11<\/td><td>9.01<\/td><\/tr><tr><td>BA50<\/td><td>50<\/td><td>0.09<\/td><td>11.53<\/td><\/tr><\/tbody><\/table><\/figure><p class=\"wp-block-paragraph\">Thermal transmittance improves with each step up in format: the U-value of the BA50 is more than five times lower than that of the BA8.<\/p><h2 class=\"wp-block-heading\" id=\"leggere\">How to read the data sheet values<\/h2><p class=\"wp-block-paragraph\">To read the data sheet, start with the U-value of the format, then check the Rt, and finally verify which wall build-up the values refer to.<\/p><ul class=\"wp-block-list\"><li>the block format and thickness;<\/li><li>any plaster and finishes;<\/li><li>the source and date of the figure.<\/li><\/ul><p class=\"wp-block-paragraph\">Thermal transmittance alone is not enough, though: the <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/en\/biomattone-thermal-phase-shift-values-for-each-format\/\">Biomattone thermal phase shift<\/a>, which measures how long heat is delayed, also matters.<\/p><h2 class=\"wp-block-heading\" id=\"progetto\">Thermal transmittance and design<\/h2><p class=\"wp-block-paragraph\">Legal limits depend on the climate zone and the type of work, so they are checked by the designer. The right format also depends on the complete wall build-up.<\/p><h2 class=\"wp-block-heading\" id=\"territorio\">Biomattone thermal transmittance in Brescia and Bolzano<\/h2><p class=\"wp-block-paragraph\">For Bolzano, see the <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/en\/biomattone-in-bolzano-performance-termiche-for-climi-rigidi\/\">performance in cold climates<\/a> page, with U 0.09 W\/m\u00b2K for the BA50. For Brescia, there is the <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/en\/biomattone-in-brescia-sizes-prices-and-technical-specifications\/\">formats, prices and technical data<\/a> page.<\/p><p class=\"wp-block-paragraph\">The product basics are covered in the guide on <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/en\/what-is-biomattone-composition-formats-and-how-it-works\/\">what the Biomattone is<\/a>.<\/p><h2 class=\"wp-block-heading\" id=\"faq\">FAQ about thermal transmittance<\/h2>\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1791548916473\"><strong class=\"schema-faq-question\">What is thermal transmittance?<\/strong> <p class=\"schema-faq-answer\">It is the amount of heat that passes through one square meter of wall, in W\/m\u00b2K. A low value indicates better insulation.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548916474\"><strong class=\"schema-faq-question\">What is the thermal transmittance of the Biomattone?<\/strong> <p class=\"schema-faq-answer\">It depends on the format: from 0.5 W\/m\u00b2K for the BA8 to 0.09 W\/m\u00b2K for the BA50. It decreases as thickness increases.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548916475\"><strong class=\"schema-faq-question\">What is the difference between U and Rt?<\/strong> <p class=\"schema-faq-answer\">Rt measures how strongly the wall resists heat, and U is roughly its inverse. The higher the Rt, the lower the U.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548916476\"><strong class=\"schema-faq-question\">Which format has the lowest thermal transmittance?<\/strong> <p class=\"schema-faq-answer\">The BA50, with U 0.09 W\/m\u00b2K and Rt 11.53 m\u00b2K\/W. It is also the thickest format, at 50 cm.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548916477\"><strong class=\"schema-faq-question\">Is thermal transmittance enough to choose the format?<\/strong> <p class=\"schema-faq-answer\">No. Thermal phase shift also matters, along with space, wall build-up and climate zone. The complete project needs to be assessed.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Biomattone\u00ae thermal transmittance: U from 0.5 to 0.09 W\/m\u00b2K and Rt from 1.99 to 11.53 m\u00b2K\/W. Table by format and guide to reading the values.<\/p>\n","protected":false},"author":2,"featured_media":2155,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[40,39],"class_list":["post-2187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-performance-and-technical-data","tag-bolzano","tag-brescia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Biomattone Thermal Transmittance: Reading U and Rt by Format<\/title>\n<meta name=\"description\" content=\"Biomattone thermal transmittance from 0.5 to 0.09 W\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biomattone Thermal Transmittance: Reading U and Rt by Format\" \/>\n<meta property=\"og:description\" content=\"Biomattone thermal transmittance from 0.5 to 0.09 W\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/\" \/>\n<meta property=\"og:site_name\" content=\"Biomattone\u00ae\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/canapaecalce\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-20T08:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-20T08:02:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1530\" \/>\n\t<meta property=\"og:image:height\" content=\"1082\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tecnocanapa Bioedilizia by SENINI\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tecnocanapa Bioedilizia by SENINI\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/\"},\"author\":{\"name\":\"Tecnocanapa Bioedilizia by SENINI\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#\\\/schema\\\/person\\\/1b7890913b974119cf23773f173005b8\"},\"headline\":\"Biomattone\u00ae Thermal Transmittance: Reading U and Rt for Each Format\",\"datePublished\":\"2026-10-20T08:00:00+00:00\",\"dateModified\":\"2026-10-20T08:02:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/\"},\"wordCount\":598,\"publisher\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Parete-Blocco-Ambiente\u00ae.jpg\",\"keywords\":[\"Bolzano\",\"Brescia\"],\"articleSection\":[\"Performance and technical data\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/\",\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/\",\"name\":\"Biomattone Thermal Transmittance: Reading U and Rt by Format\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Parete-Blocco-Ambiente\u00ae.jpg\",\"datePublished\":\"2026-10-20T08:00:00+00:00\",\"dateModified\":\"2026-10-20T08:02:52+00:00\",\"description\":\"Biomattone thermal transmittance from 0.5 to 0.09 W\\\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916473\"},{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916474\"},{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916475\"},{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916476\"},{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916477\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#primaryimage\",\"url\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Parete-Blocco-Ambiente\u00ae.jpg\",\"contentUrl\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Parete-Blocco-Ambiente\u00ae.jpg\",\"width\":1530,\"height\":1082,\"caption\":\"Hemp-lime sustainable construction \u2013 living comfort for new builds | Tecnocanapa Bioedilizia\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/biomattone.it\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Biomattone\u00ae Thermal Transmittance: Reading U and Rt for Each Format\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/\",\"name\":\"Biomattone\u00ae\",\"description\":\"Tecnocanapa Bioedilizia by SENINI\",\"publisher\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/biomattone.it\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#organization\",\"name\":\"Tecnocanapa Bioedilizia\",\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/TECNOCANAPA-BIOEDILIZIA-SENINI-LOGO-BIOMATTONE.jpg\",\"contentUrl\":\"https:\\\/\\\/biomattone.it\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/TECNOCANAPA-BIOEDILIZIA-SENINI-LOGO-BIOMATTONE.jpg\",\"width\":350,\"height\":100,\"caption\":\"Tecnocanapa Bioedilizia\"},\"image\":{\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/canapaecalce\",\"https:\\\/\\\/www.instagram.com\\\/tecnocanapabioedilizia\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/seninisrl\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/#\\\/schema\\\/person\\\/1b7890913b974119cf23773f173005b8\",\"name\":\"Tecnocanapa Bioedilizia by SENINI\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g\",\"caption\":\"Tecnocanapa Bioedilizia by SENINI\"},\"sameAs\":[\"https:\\\/\\\/tecnocanapa-bioedilizia.it\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916473\",\"position\":1,\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916473\",\"name\":\"What is thermal transmittance?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is the amount of heat that passes through one square meter of wall, in W\\\/m\u00b2K. A low value indicates better insulation.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916474\",\"position\":2,\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916474\",\"name\":\"What is the thermal transmittance of the Biomattone?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on the format: from 0.5 W\\\/m\u00b2K for the BA8 to 0.09 W\\\/m\u00b2K for the BA50. It decreases as thickness increases.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916475\",\"position\":3,\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916475\",\"name\":\"What is the difference between U and Rt?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Rt measures how strongly the wall resists heat, and U is roughly its inverse. The higher the Rt, the lower the U.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916476\",\"position\":4,\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916476\",\"name\":\"Which format has the lowest thermal transmittance?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The BA50, with U 0.09 W\\\/m\u00b2K and Rt 11.53 m\u00b2K\\\/W. It is also the thickest format, at 50 cm.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916477\",\"position\":5,\"url\":\"https:\\\/\\\/biomattone.it\\\/en\\\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\\\/#faq-question-1791548916477\",\"name\":\"Is thermal transmittance enough to choose the format?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Thermal phase shift also matters, along with space, wall build-up and climate zone. The complete project needs to be assessed.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Biomattone Thermal Transmittance: Reading U and Rt by Format","description":"Biomattone thermal transmittance from 0.5 to 0.09 W\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/","og_locale":"en_US","og_type":"article","og_title":"Biomattone Thermal Transmittance: Reading U and Rt by Format","og_description":"Biomattone thermal transmittance from 0.5 to 0.09 W\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.","og_url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/","og_site_name":"Biomattone\u00ae","article_publisher":"https:\/\/www.facebook.com\/canapaecalce","article_published_time":"2026-10-20T08:00:00+00:00","article_modified_time":"2026-10-20T08:02:52+00:00","og_image":[{"width":1530,"height":1082,"url":"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg","type":"image\/jpeg"}],"author":"Tecnocanapa Bioedilizia by SENINI","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Tecnocanapa Bioedilizia by SENINI","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#article","isPartOf":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/"},"author":{"name":"Tecnocanapa Bioedilizia by SENINI","@id":"https:\/\/biomattone.it\/en\/#\/schema\/person\/1b7890913b974119cf23773f173005b8"},"headline":"Biomattone\u00ae Thermal Transmittance: Reading U and Rt for Each Format","datePublished":"2026-10-20T08:00:00+00:00","dateModified":"2026-10-20T08:02:52+00:00","mainEntityOfPage":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/"},"wordCount":598,"publisher":{"@id":"https:\/\/biomattone.it\/en\/#organization"},"image":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#primaryimage"},"thumbnailUrl":"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg","keywords":["Bolzano","Brescia"],"articleSection":["Performance and technical data"],"inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/","url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/","name":"Biomattone Thermal Transmittance: Reading U and Rt by Format","isPartOf":{"@id":"https:\/\/biomattone.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#primaryimage"},"image":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#primaryimage"},"thumbnailUrl":"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg","datePublished":"2026-10-20T08:00:00+00:00","dateModified":"2026-10-20T08:02:52+00:00","description":"Biomattone thermal transmittance from 0.5 to 0.09 W\/m\u00b2K: U and Rt table for each format from BA8 to BA50 and how to read the data sheet values.","breadcrumb":{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916473"},{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916474"},{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916475"},{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916476"},{"@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916477"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#primaryimage","url":"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg","contentUrl":"https:\/\/biomattone.it\/wp-content\/uploads\/2026\/07\/Parete-Blocco-Ambiente\u00ae.jpg","width":1530,"height":1082,"caption":"Hemp-lime sustainable construction \u2013 living comfort for new builds | Tecnocanapa Bioedilizia"},{"@type":"BreadcrumbList","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/biomattone.it\/en\/"},{"@type":"ListItem","position":2,"name":"Biomattone\u00ae Thermal Transmittance: Reading U and Rt for Each Format"}]},{"@type":"WebSite","@id":"https:\/\/biomattone.it\/en\/#website","url":"https:\/\/biomattone.it\/en\/","name":"Biomattone\u00ae","description":"Tecnocanapa Bioedilizia by SENINI","publisher":{"@id":"https:\/\/biomattone.it\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/biomattone.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/biomattone.it\/en\/#organization","name":"Tecnocanapa Bioedilizia","url":"https:\/\/biomattone.it\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/biomattone.it\/en\/#\/schema\/logo\/image\/","url":"https:\/\/biomattone.it\/wp-content\/uploads\/2025\/10\/TECNOCANAPA-BIOEDILIZIA-SENINI-LOGO-BIOMATTONE.jpg","contentUrl":"https:\/\/biomattone.it\/wp-content\/uploads\/2025\/10\/TECNOCANAPA-BIOEDILIZIA-SENINI-LOGO-BIOMATTONE.jpg","width":350,"height":100,"caption":"Tecnocanapa Bioedilizia"},"image":{"@id":"https:\/\/biomattone.it\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/canapaecalce","https:\/\/www.instagram.com\/tecnocanapabioedilizia\/","https:\/\/www.linkedin.com\/company\/seninisrl"]},{"@type":"Person","@id":"https:\/\/biomattone.it\/en\/#\/schema\/person\/1b7890913b974119cf23773f173005b8","name":"Tecnocanapa Bioedilizia by SENINI","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9d7cb3f3cb8e4d5374a57501aa67aa7b0825683c05265d81a6985ae361f7762d?s=96&d=mm&r=g","caption":"Tecnocanapa Bioedilizia by SENINI"},"sameAs":["https:\/\/tecnocanapa-bioedilizia.it"]},{"@type":"Question","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916473","position":1,"url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916473","name":"What is thermal transmittance?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It is the amount of heat that passes through one square meter of wall, in W\/m\u00b2K. A low value indicates better insulation.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916474","position":2,"url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916474","name":"What is the thermal transmittance of the Biomattone?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It depends on the format: from 0.5 W\/m\u00b2K for the BA8 to 0.09 W\/m\u00b2K for the BA50. It decreases as thickness increases.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916475","position":3,"url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916475","name":"What is the difference between U and Rt?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Rt measures how strongly the wall resists heat, and U is roughly its inverse. The higher the Rt, the lower the U.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916476","position":4,"url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916476","name":"Which format has the lowest thermal transmittance?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The BA50, with U 0.09 W\/m\u00b2K and Rt 11.53 m\u00b2K\/W. It is also the thickest format, at 50 cm.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916477","position":5,"url":"https:\/\/biomattone.it\/en\/biomattone-thermal-transmittance-reading-u-and-rt-for-each-format\/#faq-question-1791548916477","name":"Is thermal transmittance enough to choose the format?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Thermal phase shift also matters, along with space, wall build-up and climate zone. The complete project needs to be assessed.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/posts\/2187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/comments?post=2187"}],"version-history":[{"count":3,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/posts\/2187\/revisions"}],"predecessor-version":[{"id":4006,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/posts\/2187\/revisions\/4006"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/media\/2155"}],"wp:attachment":[{"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/media?parent=2187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/categories?post=2187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biomattone.it\/en\/wp-json\/wp\/v2\/tags?post=2187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}