{"id":2718,"date":"2026-05-28T14:18:50","date_gmt":"2026-05-28T12:18:50","guid":{"rendered":"https:\/\/inductance.be\/?p=2718"},"modified":"2026-06-09T15:13:44","modified_gmt":"2026-06-09T13:13:44","slug":"isolation-et-etancheite-a-lair-deux-cles-pour-un-meilleur-score-peb","status":"publish","type":"post","link":"https:\/\/inductance.be\/nl\/2026\/05\/28\/isolation-et-etancheite-a-lair-deux-cles-pour-un-meilleur-score-peb\/","title":{"rendered":"Isolation et \u00c9tanch\u00e9it\u00e9 \u00e0 l\u2019Air : Deux Cl\u00e9s pour un Meilleur Score PEB"},"content":{"rendered":"
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Isolation et \u00e9tanch\u00e9it\u00e9 : d\u00e9couvrez comment ces deux \u00e9l\u00e9ments influencent votre certificat PEB et vos factures<\/p>\n

\u00a0<\/p>\n

Pourquoi isoler ?<\/b><\/p>\n

La chaleur s\u2019\u00e9chappe principalement :<\/p>\n

    \n
  • Par la toiture (25\u201330 %),<\/li>\n
  • Par les murs (20\u201325 %),<\/li>\n
  • Par les vitrages (15 %),<\/li>\n
  • Par le sol (10 %),<\/li>\n
  • Par la ventilation non contr\u00f4l\u00e9e (20 %).<\/li>\n<\/ul>\n

    L\u2019isolation : un investissement durable<\/b><\/p>\n

    Un bon isolant r\u00e9duit la\u00a0perte par conduction<\/b>. Le choix d\u00e9pend du support :<\/p>\n

      \n
    • Toiture : laine min\u00e9rale, cellulose, PIR ;<\/li>\n
    • Murs : isolation par l\u2019ext\u00e9rieur ou l\u2019int\u00e9rieur ;<\/li>\n
    • Sols : mousse PUR projet\u00e9e, polystyr\u00e8ne extrud\u00e9.<\/li>\n<\/ul>\n

      \u00c9tanch\u00e9it\u00e9 \u00e0 l\u2019air et confort<\/b><\/p>\n

      L\u2019air s\u2019infiltre par les fissures, prises \u00e9lectriques, joints mal pos\u00e9s\u2026<\/p>\n

      Une bonne\u00a0\u00e9tanch\u00e9it\u00e9 \u00e0 l\u2019air<\/b>\u00a0:<\/p>\n

        \n
      • R\u00e9duit les pertes par convection,<\/li>\n
      • \u00c9vite les courants d\u2019air et l\u2019humidit\u00e9,<\/li>\n
      • Am\u00e9liore la durabilit\u00e9 de l\u2019isolant.<\/li>\n<\/ul>\n

        Le test Blower Door<\/b><\/p>\n

        Le test de pressurisation mesure la\u00a0perm\u00e9abilit\u00e9 \u00e0 l\u2019air du b\u00e2timent<\/b>.<\/p>\n

        Un r\u00e9sultat < 3 m\u00b3\/h.m\u00b2 \u00e0 50 Pa est consid\u00e9r\u00e9 comme performant.<\/p>\n

        Impact PEB<\/b><\/p>\n

        Une maison bien isol\u00e9e et \u00e9tanche consomme jusqu\u2019\u00e0\u00a050 % d\u2019\u00e9nergie en moins<\/b>.<\/p>\n

        \ud83d\udca1 Bonus : certaines primes \u00e9nergie wallonnes couvrent jusqu\u2019\u00e0 70 \u20ac\/m\u00b2 d\u2019isolation de toiture.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

        Isolation et \u00e9tanch\u00e9it\u00e9 : d\u00e9couvrez comment ces deux \u00e9l\u00e9ments influencent votre certificat PEB et vos factures \u00a0 Pourquoi isoler ? […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[18],"tags":[20],"class_list":["post-2718","post","type-post","status-publish","format-standard","hentry","category-blog","tag-test1"],"_links":{"self":[{"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/posts\/2718","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/comments?post=2718"}],"version-history":[{"count":7,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/posts\/2718\/revisions"}],"predecessor-version":[{"id":2764,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/posts\/2718\/revisions\/2764"}],"wp:attachment":[{"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/media?parent=2718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/categories?post=2718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inductance.be\/nl\/wp-json\/wp\/v2\/tags?post=2718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}