{"id":2152,"date":"2024-05-10T19:37:42","date_gmt":"2024-05-10T17:37:42","guid":{"rendered":"https:\/\/www.fixolite.eu\/?p=2152"},"modified":"2025-09-03T13:29:48","modified_gmt":"2025-09-03T11:29:48","slug":"maison-passive-quelle-epaisseur-disolation","status":"publish","type":"post","link":"https:\/\/fixolite.eu\/en\/passive-house-how-thick-should-the-insulation-be\/","title":{"rendered":"Passive house: how thick should the insulation be?"},"content":{"rendered":"<p>To achieve a thermal resistance of 6.5 m\u00b2-K\/W in the walls (passive house), different thicknesses of insulating materials can be used, depending on their coefficient of thermal conductivity (\u03bb). Here are some examples of insulating materials commonly used in construction and the thicknesses required to achieve this thermal resistance value.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>Material<\/th><th>Lambda \u03bb (W\/m-K)<\/th><th>Thickness (cm)<\/th><\/tr><\/thead><tbody><tr><td>Polyurethane foam<\/td><td>0.025<\/td><td>16<\/td><\/tr><tr><td>Graphite expanded polystyrene (EPS)<\/td><td>0.030<\/td><td>20<\/td><\/tr><tr><td>Glass wool<\/td><td>0.035<\/td><td>23<\/td><\/tr><tr><td>Rock wool<\/td><td>0.035<\/td><td>23<\/td><\/tr><tr><td>Expanded polystyrene (EPS)<\/td><td>0.038<\/td><td>25<\/td><\/tr><tr><td>Hemp<\/td><td>0.040<\/td><td>26<\/td><\/tr><tr><td>Cellulose<\/td><td>0.040<\/td><td>26<\/td><\/tr><tr><td>Extruded polystyrene (XPS)<\/td><td>0.042<\/td><td>27<\/td><\/tr><tr><td>Straw<\/td><td>0.120<\/td><td>78<\/td><\/tr><tr><td>Wood-cement<\/td><td>0.160<\/td><td>104<\/td><\/tr><tr><td>Cellular concrete<\/td><td>0.200<\/td><td>130<\/td><\/tr><tr><td>Solid concrete<\/td><td>2.000<\/td><td>1 300<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>To achieve a thermal resistance of 6.5 m\u00b2-K\/W in walls (passive house), different thicknesses of insulating materials can be used, depending on their coefficient of thermal conductivity (\u03bb). Here are some examples of insulating materials commonly used in construction and the thicknesses required to achieve this thermal resistance value. Material Lambda \u03bb (W\/m-K) Thickness [...]<\/p>","protected":false},"author":1,"featured_media":2153,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blocs-de-construction"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.3 (Yoast SEO v24.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Maison passive : quelle \u00e9paisseur d&#039;isolation ? - FIXOLITE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ecobloc.fr\/pt\/casa-passiva-qual-deve-ser-a-espessura-do-isolamento\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maison passive : quelle \u00e9paisseur d&#039;isolation ?\" \/>\n<meta property=\"og:description\" content=\"Pour atteindre une r\u00e9sistance thermique de 6,5 m\u00b2\u00b7K\/W dans les murs (maison passive), diff\u00e9rentes \u00e9paisseurs de mat\u00e9riaux isolants peuvent \u00eatre utilis\u00e9es selon leur coefficient de conductivit\u00e9 thermique (\u03bb). Voici quelques exemples de mat\u00e9riaux isolants couramment utilis\u00e9s dans la construction et les \u00e9paisseurs n\u00e9cessaires pour atteindre cette valeur de r\u00e9sistance thermique. 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