{"id":2630,"date":"2026-10-13T08:00:00","date_gmt":"2026-10-13T08:00:00","guid":{"rendered":"https:\/\/biomattone.it\/?p=2630"},"modified":"2026-10-20T13:34:15","modified_gmt":"2026-10-20T13:34:15","slug":"dephasage-thermique-du-biomattone-valeurs-par-format","status":"publish","type":"post","link":"https:\/\/biomattone.it\/fr\/dephasage-thermique-du-biomattone-valeurs-par-format\/","title":{"rendered":"D\u00e9phasage thermique du Biomattone\u00ae\u00a0: valeurs par format"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Le d\u00e9phasage thermique du Biomattone indique combien d\u2019heures la chaleur met \u00e0 traverser le mur. Il d\u00e9pend du format\u00a0: de 3h00&prime; pour le BA8 \u00e0 32h04&prime; pour le BA50, sans enduit. Il augmente avec l\u2019\u00e9paisseur, de 8 \u00e0 50 cm.<\/p><h2 class=\"wp-block-heading\">En bref<\/h2><ul class=\"wp-block-list\"><li>D\u00e9finition\u00a0: le temps, en heures, que met la chaleur \u00e0 traverser le mur.<\/li><li>Valeurs\u00a0: de 3h00&prime; (BA8) \u00e0 32h04&prime; (BA50), sans enduit.<\/li><li>Format\u00a0: plus d\u2019\u00e9paisseur signifie plus de d\u00e9phasage.<\/li><li>Enduit\u00a0: le BA36 passe de 22h23&prime; \u00e0 23h38&prime; avec enduit (brochure LUG26).<\/li><li>Source\u00a0: fiche technique Biomattone\u00ae NOV25.<\/li><\/ul><p class=\"wp-block-paragraph\"><em>Mis \u00e0 jour le 5 octobre 2026. Source des donn\u00e9es\u00a0: fiche technique Biomattone\u00ae NOV25\u00a0; l\u2019exemple avec enduit provient de la brochure LUG26.<\/em><\/p><h2 class=\"wp-block-heading\">Dans cet article<\/h2><ul class=\"wp-block-list\"><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#cos-e\">Qu\u2019est-ce que le d\u00e9phasage thermique<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#formati\">Le d\u00e9phasage thermique du Biomattone par format<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#spessore\">Pourquoi l\u2019\u00e9paisseur modifie le d\u00e9phasage<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#intonaco\">D\u00e9phasage avec et sans enduit<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#progetto\">Comment lire le d\u00e9phasage dans un projet<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#territorio\">D\u00e9phasage thermique \u00e0 Brescia et \u00e0 Bolzano<\/a><\/li><li><a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"#faq\">Questions fr\u00e9quentes sur le d\u00e9phasage thermique<\/a><\/li><\/ul><h2 class=\"wp-block-heading\" id=\"cos-e\">Qu\u2019est-ce que le d\u00e9phasage thermique<\/h2><p class=\"wp-block-paragraph\">Le d\u00e9phasage est le d\u00e9calage entre le pic de temp\u00e9rature ext\u00e9rieure et le pic int\u00e9rieur. Concr\u00e8tement, il indique en heures le temps que met la chaleur \u00e0 traverser le mur. Plus la valeur est \u00e9lev\u00e9e, plus la chaleur arrive tard \u00e0 l\u2019int\u00e9rieur.<\/p><p class=\"wp-block-paragraph\">Il d\u00e9pend de la masse, de l\u2019\u00e9paisseur et de la conductivit\u00e9 des mat\u00e9riaux. Le Biomattone pr\u00e9sente par exemple une masse volumique de 310 kg\/m\u00b3 \u00e0 sec, une chaleur sp\u00e9cifique de 1280 J\/kgK et une conductivit\u00e9 de 0,044 W\/mK.<\/p><h2 class=\"wp-block-heading\" id=\"formati\">Le d\u00e9phasage thermique du Biomattone par format<\/h2><p class=\"wp-block-paragraph\">La fiche technique indique le d\u00e9phasage thermique du Biomattone pour chaque format, mais les valeurs se rapportent \u00e0 la ma\u00e7onnerie sans enduit.<\/p><figure class=\"wp-block-table\"><table><thead><tr><th>Format<\/th><th>\u00c9paisseur (cm)<\/th><th>D\u00e9phasage (sans enduit)<\/th><th>U (W\/m\u00b2K)<\/th><th>Rt (m\u00b2K\/W)<\/th><\/tr><\/thead><tbody><tr><td>BA8<\/td><td>8<\/td><td>3h00&prime;<\/td><td>0,5<\/td><td>1,99<\/td><\/tr><tr><td>BA12<\/td><td>12<\/td><td>5h44&prime;<\/td><td>0,34<\/td><td>2,9<\/td><\/tr><tr><td>BA20<\/td><td>20<\/td><td>11h19&prime;<\/td><td>0,21<\/td><td>4,71<\/td><\/tr><tr><td>BA25<\/td><td>25<\/td><td>14h46&prime;<\/td><td>0,17<\/td><td>5,85<\/td><\/tr><tr><td>BA30<\/td><td>30<\/td><td>18h14&prime;<\/td><td>0,14<\/td><td>6,99<\/td><\/tr><tr><td>BA36<\/td><td>36<\/td><td>22h23&prime;<\/td><td>0,12<\/td><td>8,35<\/td><\/tr><tr><td>BA40<\/td><td>40<\/td><td>25h08&prime;<\/td><td>0,11<\/td><td>9,01<\/td><\/tr><tr><td>BA50<\/td><td>50<\/td><td>32h04&prime;<\/td><td>0,09<\/td><td>11,53<\/td><\/tr><\/tbody><\/table><\/figure><p class=\"wp-block-paragraph\">Le BA8 s\u2019arr\u00eate \u00e0 3h00&prime;, tandis que le BA50 atteint 32h04&prime;\u00a0: entre les deux formats, il y a plus de 29 heures d\u2019\u00e9cart.<\/p><h2 class=\"wp-block-heading\" id=\"spessore\">Pourquoi l\u2019\u00e9paisseur modifie le d\u00e9phasage<\/h2><p class=\"wp-block-paragraph\">Le d\u00e9phasage thermique du Biomattone augmente avec l\u2019\u00e9paisseur\u00a0: plus le bloc est \u00e9pais, plus la chaleur met de temps \u00e0 passer. Par exemple, le BA30 atteint 18h14&prime;, le BA36 22h23&prime;, le BA40 25h08&prime; et le BA50 32h04&prime;.<\/p><p class=\"wp-block-paragraph\">La transmission thermique s\u2019am\u00e9liore elle aussi avec l\u2019\u00e9paisseur, de U 0,5 \u00e0 0,09 W\/m\u00b2K. Mais d\u00e9phasage et transmission thermique sont deux donn\u00e9es diff\u00e9rentes\u00a0: la premi\u00e8re mesure le retard, la seconde la quantit\u00e9 de chaleur qui passe.<\/p><h2 class=\"wp-block-heading\" id=\"intonaco\">D\u00e9phasage avec et sans enduit<\/h2><p class=\"wp-block-paragraph\">Les valeurs du tableau sont sans enduit. Avec l\u2019enduit, le d\u00e9phasage augmente\u00a0: pour le BA36, par exemple, la brochure LUG26 indique 23h38&prime;, contre 22h23&prime; dans la fiche.<\/p><p class=\"wp-block-paragraph\">C\u2019est pourquoi la donn\u00e9e doit toujours \u00eatre lue avec la composition de paroi.<\/p><h2 class=\"wp-block-heading\" id=\"progetto\">Comment lire le d\u00e9phasage dans un projet<\/h2><p class=\"wp-block-paragraph\">Le d\u00e9phasage seul ne suffit pas\u00a0: dans un projet, c\u2019est la composition de paroi compl\u00e8te qui compte. Le bon format d\u00e9pend aussi de l\u2019intervention et de la zone climatique.<\/p><ul class=\"wp-block-list\"><li>transmission thermique U et r\u00e9sistance thermique Rt\u00a0;<\/li><li>exposition des murs\u00a0;<\/li><li>enduit et finitions perspirants\u00a0;<\/li><li>zone climatique du chantier.<\/li><\/ul><h2 class=\"wp-block-heading\" id=\"territorio\">D\u00e9phasage thermique \u00e0 Brescia et \u00e0 Bolzano<\/h2><p class=\"wp-block-paragraph\">Pour Bolzano, consultez les <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/fr\/biomattone-a-bolzano-performances-thermiques-en-climat-rigoureux\/\">performances pour les climats rigoureux<\/a>, o\u00f9 le BA50 atteint 32h04&prime;. Pour Brescia, voyez plut\u00f4t <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/fr\/biomattone-a-brescia-formats-prix-et-donnees-techniques\/\">formats, prix et donn\u00e9es techniques<\/a>.<\/p><p class=\"wp-block-paragraph\">Les notions de base sur le produit se trouvent par ailleurs dans le <a style=\"color:#9e5931;text-decoration:underline;font-weight:600;\" href=\"https:\/\/biomattone.it\/fr\/quest-ce-que-le-biomattone-composition-formats-et-fonctionnement\/\">guide qu\u2019est-ce que le Biomattone<\/a>.<\/p><h2 class=\"wp-block-heading\" id=\"faq\">Questions fr\u00e9quentes sur le d\u00e9phasage thermique<\/h2>\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1791548915740\"><strong class=\"schema-faq-question\">Qu\u2019est-ce que le d\u00e9phasage thermique\u00a0?<\/strong> <p class=\"schema-faq-answer\">C\u2019est le temps que met la chaleur \u00e0 traverser le mur, mesur\u00e9 en heures. Plus il est \u00e9lev\u00e9, plus la chaleur arrive tard \u00e0 l\u2019int\u00e9rieur.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548915741\"><strong class=\"schema-faq-question\">Quel est le d\u00e9phasage thermique du Biomattone\u00a0?<\/strong> <p class=\"schema-faq-answer\">Il d\u00e9pend du format\u00a0: de 3h00&prime; pour le BA8 \u00e0 32h04&prime; pour le BA50, sans enduit. Il augmente avec l\u2019\u00e9paisseur.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548915742\"><strong class=\"schema-faq-question\">Quel format offre le d\u00e9phasage le plus \u00e9lev\u00e9\u00a0?<\/strong> <p class=\"schema-faq-answer\">Le BA50, avec 32h04&prime;. C\u2019est aussi le format dont la transmission thermique est la plus basse, U 0,09 W\/m\u00b2K.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548915743\"><strong class=\"schema-faq-question\">Le d\u00e9phasage change-t-il avec l\u2019enduit\u00a0?<\/strong> <p class=\"schema-faq-answer\">Oui, avec l\u2019enduit la valeur augmente. Pour le BA36, la brochure LUG26 indique 23h38&prime;, contre 22h23&prime; sans enduit.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548915744\"><strong class=\"schema-faq-question\">D\u00e9phasage et transmission thermique sont-ils la m\u00eame chose\u00a0?<\/strong> <p class=\"schema-faq-answer\">Non. La transmission thermique mesure la quantit\u00e9 de chaleur qui passe, le d\u00e9phasage le temps qu\u2019elle met \u00e0 arriver. C\u2019est pourquoi il faut les lire ensemble.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791548915745\"><strong class=\"schema-faq-question\">Quel format de Biomattone choisir\u00a0?<\/strong> <p class=\"schema-faq-answer\">Cela d\u00e9pend du projet, de la zone climatique et des objectifs. Il est conseill\u00e9 d\u2019\u00e9valuer la composition de paroi compl\u00e8te avec le concepteur.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9phasage thermique du Biomattone\u00ae\u00a0: de 3h00&prime; (BA8) \u00e0 32h04&prime; (BA50). Tableau par format, exemples avec et sans enduit et lecture de la donn\u00e9e.<\/p>\n","protected":false},"author":2,"featured_media":2472,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[52],"tags":[17,16],"class_list":["post-2630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-prestazioni-e-dati-tecnici","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>D\u00e9phasage thermique du Biomattone\u00a0: valeurs par format<\/title>\n<meta name=\"description\" content=\"D\u00e9phasage thermique du Biomattone\u00a0: de 3h00&#039; pour le BA8 \u00e0 32h04&#039; pour le BA50. 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