{"id":6586,"date":"2025-08-08T08:06:21","date_gmt":"2025-08-08T06:06:21","guid":{"rendered":"https:\/\/www.la-maison-naturelle.com\/blog\/?p=6586"},"modified":"2025-08-13T09:00:57","modified_gmt":"2025-08-13T07:00:57","slug":"iti-sur-mur-en-parpaing-points-cles-composition-et-conditions-de-reussite","status":"publish","type":"post","link":"https:\/\/www.la-maison-naturelle.com\/blog\/iti-sur-mur-en-parpaing-points-cles-composition-et-conditions-de-reussite\/","title":{"rendered":"ITI sur mur en parpaing : points cl\u00e9s, composition et conditions de r\u00e9ussite"},"content":{"rendered":"<p data-start=\"3888\" data-end=\"4161\"><strong data-start=\"3888\" data-end=\"3901\">Objectif.<\/strong> D\u00e9ployer une ITI sur <strong data-start=\"3923\" data-end=\"3942\">mur en parpaing<\/strong> en s\u00e9curisant le comportement hygrothermique. Comme pour le mur en pierre, la <strong data-start=\"4021\" data-end=\"4033\">validit\u00e9<\/strong> de la solution est conditionn\u00e9e \u00e0 l\u2019absence de <strong data-start=\"4081\" data-end=\"4106\">remont\u00e9es capillaires<\/strong> dans le support. <button class=\"ms-1 flex h-[22px] items-center rounded-xl px-2 relative bottom-[-2px] bg-[#f4f4f4] text-token-text-secondary! hover:bg-token-bg-secondary dark:bg-token-main-surface-secondary dark:hover:bg-token-bg-secondary\"><\/button><\/p>\n<h2 data-start=\"4163\" data-end=\"4226\">Pourquoi une membrane hygrovariable et de la fibre de bois ?<\/h2>\n<p data-start=\"4227\" data-end=\"4680\">Le parpaing n\u2019est pas \u00ab \u00e9tanche \u00e0 tout \u00bb : il peut <strong data-start=\"4278\" data-end=\"4289\">stocker<\/strong> puis <strong data-start=\"4295\" data-end=\"4308\">restituer<\/strong> de l\u2019humidit\u00e9. Une <strong data-start=\"4328\" data-end=\"4354\">membrane <a href=\"https:\/\/www.la-maison-naturelle.com\/blog\/un-pare-vapeur-hygrovariable\/\" data-internallinksmanager029f6b8e52c=\"120\" title=\"Qu'est-ce qu'un pare vapeur hygrovariable ?\">hygrovariable<\/a><\/strong> cr\u00e9e une <strong data-start=\"4364\" data-end=\"4385\">barri\u00e8re en hiver<\/strong> (<strong data-start=\"4387\" data-end=\"4400\"><a href=\"https:\/\/www.la-maison-naturelle.com\/blog\/cest-quoi-la-valeur-sd-dun-pare-vapeur\/\" data-internallinksmanager029f6b8e52c=\"76\" title=\"valeur SD\">Sd<\/a> &gt; 25 m<\/strong>) et <strong data-start=\"4405\" data-end=\"4423\">s\u2019ouvre en \u00e9t\u00e9<\/strong> (<strong data-start=\"4425\" data-end=\"4437\">\u2248 0,25 m<\/strong>) afin de <strong data-start=\"4447\" data-end=\"4487\">favoriser le s\u00e9chage par rediffusion<\/strong>. Avec <strong data-start=\"4494\" data-end=\"4504\">160 mm<\/strong> de <strong data-start=\"4508\" data-end=\"4525\">fibre de bois<\/strong> (<strong data-start=\"4527\" data-end=\"4546\">R = 4,57 m\u00b2\u00b7K\/W<\/strong>), on conjugue <strong data-start=\"4561\" data-end=\"4576\">performance<\/strong> et <strong data-start=\"4580\" data-end=\"4594\">robustesse<\/strong>, sous r\u00e9serve d\u2019une mise en \u0153uvre tr\u00e8s soign\u00e9e. <button class=\"ms-1 flex h-[22px] items-center rounded-xl px-2 relative bottom-[-2px] bg-[#f4f4f4] text-token-text-secondary! hover:bg-token-bg-secondary dark:bg-token-main-surface-secondary dark:hover:bg-token-bg-secondary\"><\/button><\/p>\n<h2 data-start=\"4682\" data-end=\"4725\">Composition type (int\u00e9rieur \u2192 ext\u00e9rieur)<\/h2>\n<ul data-start=\"4726\" data-end=\"5090\">\n<li data-start=\"4726\" data-end=\"4764\">\n<p data-start=\"4728\" data-end=\"4764\">Parement <strong data-start=\"4737\" data-end=\"4762\">ouvert \u00e0 la diffusion<\/strong><\/p>\n<\/li>\n<li data-start=\"4765\" data-end=\"4812\">\n<p data-start=\"4767\" data-end=\"4812\"><strong data-start=\"4767\" data-end=\"4785\">Vide technique<\/strong> (<strong data-start=\"4787\" data-end=\"4798\">\u2265 22 mm<\/strong> recommand\u00e9)<\/p>\n<\/li>\n<li data-start=\"4813\" data-end=\"4879\">\n<p data-start=\"4815\" data-end=\"4879\"><strong data-start=\"4815\" data-end=\"4877\">Membrane d\u2019<a href=\"https:\/\/www.la-maison-naturelle.com\/3042-etancheite-a-l-air\" data-internallinksmanager029f6b8e52c=\"138\" title=\"\u00e9tanch\u00e9it\u00e9 \u00e0 l\u2019air\">\u00e9tanch\u00e9it\u00e9 \u00e0 l\u2019air<\/a> \/ frein\u2011vapeur hygrovariable<\/strong><\/p>\n<\/li>\n<li data-start=\"4880\" data-end=\"4917\">\n<p data-start=\"4882\" data-end=\"4917\"><strong data-start=\"4882\" data-end=\"4915\">Fibre de bois 160 mm (R 4,57)<\/strong><\/p>\n<\/li>\n<li data-start=\"4918\" data-end=\"4939\">\n<p data-start=\"4920\" data-end=\"4939\"><strong data-start=\"4920\" data-end=\"4937\">Mortier 15 mm<\/strong><\/p>\n<\/li>\n<li data-start=\"4940\" data-end=\"5090\">\n<p data-start=\"4942\" data-end=\"5090\"><strong data-start=\"4942\" data-end=\"4961\">Parpaing 200 mm<\/strong><br data-start=\"4961\" data-end=\"4964\" \/>Cette composition a fait l\u2019objet d\u2019une <strong data-start=\"5003\" data-end=\"5017\">validation<\/strong> dans le cadre d\u00e9fini ci\u2011dessous. <button class=\"ms-1 flex h-[22px] items-center rounded-xl px-2 relative bottom-[-2px] bg-[#f4f4f4] text-token-text-secondary! hover:bg-token-bg-secondary dark:bg-token-main-surface-secondary dark:hover:bg-token-bg-secondary\"><\/button><\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"5092\" data-end=\"5143\">Hypoth\u00e8ses de validation (exemple de simulation)<\/h2>\n<ul data-start=\"5144\" data-end=\"5693\">\n<li data-start=\"5144\" data-end=\"5218\">\n<p data-start=\"5146\" data-end=\"5218\"><strong data-start=\"5146\" data-end=\"5165\">Site climatique<\/strong> : zone de montagne du <strong data-start=\"5188\" data-end=\"5194\">06<\/strong>, <strong data-start=\"5196\" data-end=\"5216\">orientation Nord<\/strong><\/p>\n<\/li>\n<li data-start=\"5219\" data-end=\"5263\">\n<p data-start=\"5221\" data-end=\"5263\"><strong data-start=\"5221\" data-end=\"5232\">P\u00e9riode<\/strong> : <strong data-start=\"5235\" data-end=\"5245\">10 ans<\/strong> (<strong data-start=\"5247\" data-end=\"5260\">2025\u20132035<\/strong>)<\/p>\n<\/li>\n<li data-start=\"5264\" data-end=\"5321\">\n<p data-start=\"5266\" data-end=\"5321\"><strong data-start=\"5266\" data-end=\"5290\">Conditions initiales<\/strong> : <strong data-start=\"5293\" data-end=\"5304\">HR 80 %<\/strong>, <strong data-start=\"5306\" data-end=\"5319\">T = 20\u202f\u00b0C<\/strong><\/p>\n<\/li>\n<li data-start=\"5322\" data-end=\"5427\">\n<p data-start=\"5324\" data-end=\"5427\"><strong data-start=\"5324\" data-end=\"5340\">Exfiltration<\/strong> (d\u00e9fauts mineurs) : <strong data-start=\"5361\" data-end=\"5384\">q50 = 2,5 m\u00b3\/(m\u00b2\u00b7h)<\/strong> impactant les <strong data-start=\"5399\" data-end=\"5407\">5 mm<\/strong> int\u00e9rieurs du mur<\/p>\n<\/li>\n<li data-start=\"5428\" data-end=\"5479\">\n<p data-start=\"5430\" data-end=\"5479\"><strong data-start=\"5430\" data-end=\"5454\">Absorptivit\u00e9 solaire<\/strong> : <strong data-start=\"5457\" data-end=\"5464\">0,6<\/strong> (gris moyen)<\/p>\n<\/li>\n<li data-start=\"5480\" data-end=\"5693\">\n<p data-start=\"5482\" data-end=\"5693\"><strong data-start=\"5482\" data-end=\"5500\">Base mat\u00e9riaux<\/strong> : enduit ciment (A = 0,51 kg\/(m\u00b2\u00b7h^0,5)) ; b\u00e9ton <strong data-start=\"5550\" data-end=\"5563\">E\/C = 0,5<\/strong><br data-start=\"5563\" data-end=\"5566\" \/><strong data-start=\"5566\" data-end=\"5591\">Conclusion de l\u2019\u00e9tude<\/strong> : <strong data-start=\"5594\" data-end=\"5613\">complexe valide<\/strong> selon <strong data-start=\"5620\" data-end=\"5632\">SimHuBat<\/strong> dans ces conditions. <button class=\"ms-1 flex h-[22px] items-center rounded-xl px-2 relative bottom-[-2px] bg-[#f4f4f4] text-token-text-secondary! hover:bg-token-bg-secondary dark:bg-token-main-surface-secondary dark:hover:bg-token-bg-secondary\"><\/button><\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"5695\" data-end=\"5735\">Check\u2011list chantier (mur en parpaing)<\/h2>\n<ul data-start=\"5736\" data-end=\"6291\">\n<li data-start=\"5736\" data-end=\"5785\">\n<p data-start=\"5738\" data-end=\"5785\"><strong data-start=\"5738\" data-end=\"5750\">Mur sain<\/strong>, sans <strong data-start=\"5757\" data-end=\"5782\">remont\u00e9es capillaires<\/strong>.<\/p>\n<\/li>\n<li data-start=\"5786\" data-end=\"5817\">\n<p data-start=\"5788\" data-end=\"5817\"><strong data-start=\"5788\" data-end=\"5803\">Bois &lt; 18 %<\/strong> d\u2019humidit\u00e9.<\/p>\n<\/li>\n<li data-start=\"5818\" data-end=\"5873\">\n<p data-start=\"5820\" data-end=\"5873\"><strong data-start=\"5820\" data-end=\"5841\">Aucune lame d\u2019air<\/strong> entre mur\/mortier et isolant.<\/p>\n<\/li>\n<li data-start=\"5874\" data-end=\"5919\">\n<p data-start=\"5876\" data-end=\"5919\"><strong data-start=\"5876\" data-end=\"5891\">Mortier sec<\/strong> avant isolant + membrane.<\/p>\n<\/li>\n<li data-start=\"5920\" data-end=\"5950\">\n<p data-start=\"5922\" data-end=\"5950\"><strong data-start=\"5922\" data-end=\"5947\">HR int\u00e9rieure 30\u201365 %<\/strong>.<\/p>\n<\/li>\n<li data-start=\"5951\" data-end=\"6014\">\n<p data-start=\"5953\" data-end=\"6014\"><strong data-start=\"5953\" data-end=\"5975\">\u00c9tanch\u00e9it\u00e9 \u00e0 l\u2019air<\/strong> : niveau <strong data-start=\"5985\" data-end=\"6002\">RT2012\/RE2020<\/strong> ou mieux.<\/p>\n<\/li>\n<li data-start=\"6015\" data-end=\"6066\">\n<p data-start=\"6017\" data-end=\"6066\"><strong data-start=\"6017\" data-end=\"6035\">VMC \u00e9quilibr\u00e9e<\/strong> ; \u00e9viter la <strong data-start=\"6048\" data-end=\"6063\">surpression<\/strong>.<\/p>\n<\/li>\n<li data-start=\"6067\" data-end=\"6146\">\n<p data-start=\"6069\" data-end=\"6146\"><strong data-start=\"6069\" data-end=\"6081\">Parement<\/strong> : <strong data-start=\"6084\" data-end=\"6109\">ouvert \u00e0 la diffusion<\/strong> (<strong data-start=\"6111\" data-end=\"6127\"><a href=\"https:\/\/www.la-maison-naturelle.com\/blog\/comparatif-des-panneaux-bois-osb-mdf-hdf-dfp\/\" data-internallinksmanager029f6b8e52c=\"58\" title=\"osb vs mdf\">OSB<\/a> proscrit<\/strong> c\u00f4t\u00e9 int\u00e9rieur).<\/p>\n<\/li>\n<li data-start=\"6147\" data-end=\"6178\">\n<p data-start=\"6149\" data-end=\"6178\"><strong data-start=\"6149\" data-end=\"6175\">Vide technique \u2265 22 mm<\/strong>.<\/p>\n<\/li>\n<li data-start=\"6179\" data-end=\"6291\">\n<p data-start=\"6181\" data-end=\"6291\"><strong data-start=\"6181\" data-end=\"6202\">Raccords \u00e9tanches<\/strong> : <strong data-start=\"6205\" data-end=\"6223\">rubans\/mastics<\/strong> adapt\u00e9s selon les supports. <button class=\"ms-1 flex h-[22px] items-center rounded-xl px-2 relative bottom-[-2px] bg-[#f4f4f4] text-token-text-secondary! hover:bg-token-bg-secondary dark:bg-token-main-surface-secondary dark:hover:bg-token-bg-secondary\"><\/button><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6293\" data-end=\"6551\"><strong data-start=\"6293\" data-end=\"6309\">Bon r\u00e9flexe.<\/strong> Documentez les <strong data-start=\"6325\" data-end=\"6348\">d\u00e9tails de jonction<\/strong> (plinthes, menuiseries, travers\u00e9es) et r\u00e9alisez un <strong data-start=\"6400\" data-end=\"6429\">test d\u2019\u00e9tanch\u00e9it\u00e9 \u00e0 l\u2019air<\/strong> (blower\u2011door) en fin de lot isolation\/pare\u2011vapeur pour valider la qualit\u00e9. <em data-start=\"6505\" data-end=\"6551\">(Recommandation de bonne pratique g\u00e9n\u00e9rale.)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Objectif. D\u00e9ployer une ITI sur mur en parpaing en s\u00e9curisant le comportement hygrothermique. Comme pour le mur en pierre, la validit\u00e9 de la solution est conditionn\u00e9e \u00e0 l\u2019absence de remont\u00e9es capillaires dans le support. Pourquoi une membrane hygrovariable et de la fibre de bois ? Le parpaing n\u2019est pas \u00ab \u00e9tanche \u00e0 tout \u00bb : [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":6562,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-interieur-decoration"],"_wp_attached_file":null,"_wp_attachment_metadata":null,"_wp_attachment_context":null,"_wp_attachment_image_alt":null,"_hf_settings":null,"hf_message_success":null,"hf_message_invalid_email":null,"hf_message_required_field_missing":null,"hf_message_error":null,"_menu_item_type":null,"_menu_item_menu_item_parent":null,"_menu_item_object_id":null,"_menu_item_object":null,"_menu_item_target":null,"_menu_item_classes":null,"_menu_item_xfn":null,"_menu_item_url":null,"_yoast_wpseo_primary_category":"","_thumbnail_id":"6562","_oembed_26d84b2c06432105b0a19987ae029a71":null,"_oembed_43e9e2dfde1b9b4ed91c9711026b7ef9":null,"_oembed_1fe1564764edbddc3b61e81acf52be88":null,"_oembed_df60f474cd845141e7ce6596d101e4a0":null,"_oembed_825e674795e2435c0bc66eb08e5d2c8b":null,"_oembed_time_825e674795e2435c0bc66eb08e5d2c8b":null,"_oembed_e917352ff4cc21ea91383201eeaa08cf":null,"_oembed_2363c16c972791c33e283320dc564fce":null,"_oembed_cc9ad5b5073a84776f6a62e33e6c7498":null,"_oembed_time_cc9ad5b5073a84776f6a62e33e6c7498":null,"_oembed_305147fcf4b856de518466e695c209cd":null,"_oembed_8517a877084ae01a5296813ee1d16a2b":null,"_oembed_2741f1556b243e68379198f98ba7f864":null,"_oembed_c3ffa24981451396c950ece2129da0f6":null,"_oembed_6f9091ebe2f3f5fcb5698ba6f4b41477":null,"_wp_old_slug":null,"_oembed_e4fb0f68ba12b85e9e231afe151ba12a":null,"_oembed_3c60e98bd703e617e67f5bbb3b97424d":null,"_oembed_bb060374498dcf40cb6068efe4be87e1":null,"_oembed_d0403e1e71c3a29020bd546b159480f1":null,"_oembed_b030ff17fbbbf8661c59c2ab8ff289eb":null,"_oembed_5cec699ba0631c6c0e4ba4f6af5f228e":null,"_oembed_b06a67f278b90cf4e8dd17cb12fe67b0":null,"_oembed_8e190e4fea2256f17420434651556236":null,"_oembed_b5ded119f1337916a0fc64d2ad85c95f":null,"_oembed_d9364a7a81be31c01415da2c50a48932":null,"_oembed_738cafa36d51a58e5ae3e458aa8f7584":null,"_oembed_ebcab5184b6b321b28efbcbec079859b":null,"_oembed_3dd9e35c2b7b268070e74da5b89cf937":null,"_oembed_e14b167b493e311a1c4e2aab38a463e8":null,"_oembed_dc8f7d108b38f3f0c2e0785b8bc46cae":null,"_oembed_55cf1c5142884afed312c2666bf27520":null,"_oembed_2292333bf03a956b4b61afafeff6bca0":null,"_oembed_82a986a6b900856fec23169de03a0038":null,"_oembed_4048ded025352b83569104210074165a":null,"_oembed_033b42b1af757abc39e4487233cee7f5":null,"_oembed_aec1d50f2b159366be8e37e94b201be1":null,"_oembed_0adc8480b2fcadf9a1733f572ce3d3f8":null,"_yoast_wpseo_title":null,"_yoast_wpseo_focuskw":null,"_yoast_wpseo_linkdex":null,"_yoast_wpseo_metadesc":null,"_yoast_wpseo_wordproof_timestamp":null,"_tpl_archive_meta_key":null,"_form":null,"_mail":null,"_mail_2":null,"_messages":null,"_additional_settings":null,"_locale":null,"_wp_old_date":null,"_edit_last":"5","_wpb_vc_js_status":"false","_yoast_wpseo_estimated-reading-time-minutes":"2","_edit_lock":"1755068319:5","_yoast_wpseo_content_score":"90","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ITI sur mur en parpaing : points cl\u00e9s, composition et conditions de r\u00e9ussite - La Maison naturelle | Blog<\/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:\/\/www.la-maison-naturelle.com\/blog\/iti-sur-mur-en-parpaing-points-cles-composition-et-conditions-de-reussite\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ITI sur mur en parpaing : points cl\u00e9s, composition et conditions de r\u00e9ussite - La Maison naturelle | Blog\" \/>\n<meta property=\"og:description\" content=\"Objectif. D\u00e9ployer une ITI sur mur en parpaing en s\u00e9curisant le comportement hygrothermique. Comme pour le mur en pierre, la validit\u00e9 de la solution est conditionn\u00e9e \u00e0 l\u2019absence de remont\u00e9es capillaires dans le support. Pourquoi une membrane hygrovariable et de la fibre de bois ? 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