{"id":4295,"date":"2025-07-21T11:54:52","date_gmt":"2025-07-21T09:54:52","guid":{"rendered":"https:\/\/avant4degres.fr\/?page_id=4295"},"modified":"2026-08-13T19:30:05","modified_gmt":"2026-08-13T17:30:05","slug":"leffet-albedo","status":"publish","type":"page","link":"https:\/\/avant4degres.fr\/en\/leffet-albedo\/","title":{"rendered":"L’effet alb\u00e9do"},"content":{"rendered":"
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L'effet alb\u00e9do<\/h1>\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
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18 juillet 2025<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Effet\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Vous avez peut-\u00eatre d\u00e9j\u00e0 aper\u00e7u des toits blancs, en vous demandant si c\u2019\u00e9tait juste esth\u00e9tique ou si cela avait une vraie utilit\u00e9. Et bien les deux !<\/p>

L\u2019utilisation de rev\u00eatements blancs en couverture, connue sous le nom de \u00ab\u00a0cool roofing<\/em>\u00a0\u00bb<\/strong>, a pour objectif de r\u00e9duire l\u2019inconfort estival gr\u00e2ce \u00e0 l\u2019effet alb\u00e9do<\/strong>. Alb\u00e9do, qu\u00e9saco\u00a0? L\u2019alb\u00e9do est la capacit\u00e9 de r\u00e9fl\u00e9chissement d\u2019un mat\u00e9riau. C\u2019est une valeur sans unit\u00e9 variable entre 0 et 1 o\u00f9 0 est un corps noir parfait et 1 une surface qui r\u00e9fl\u00e9chit toute la lumi\u00e8re.<\/strong> L\u2019absorption de la lumi\u00e8re produisant de la chaleur, l\u2019alb\u00e9do des mat\u00e9riaux de rev\u00eatement des b\u00e2timents (du toit, mais aussi des murs) a donc une influence sur la temp\u00e9rature int\u00e9rieure. Une surface avec un faible alb\u00e9do comme le bitume absorbera plus d\u2019\u00e9nergie lumineuse et sera donc plus chaude qu\u2019une surface avec un fort alb\u00e9do comme le pl\u00e2tre. Plus les mat\u00e9riaux sont clairs et moins ils absorbent d\u2019\u00e9nergie lumineuse.<\/strong> Mais est-ce que \u00e7a marche vraiment ?<\/p>

Dans un article publi\u00e9 en 2024 par la revue La Maison <\/em>\u00c9cologique<\/em>\u00a0(Cheyssial, 2024<\/span><\/a>), une habitante dont le toit en zinc a \u00e9t\u00e9 rev\u00eatu d\u2019une peinture r\u00e9flective blanche a observ\u00e9 une diminution de la temp\u00e9rature de l\u2019\u00e9tage de 8\u00b0C par rapport \u00e0 l\u2019\u00e9t\u00e9 pr\u00e9c\u00e9dent<\/strong>. Alors bien s\u00fbr il s\u2019agit d\u2019un exemple isol\u00e9, l\u2019alb\u00e9do du mat\u00e9riau de couverture n\u2019\u00e9tant qu\u2019une partie de l\u2019\u00e9quation, avec la pr\u00e9sence ou non d\u2019isolant et de fen\u00eatre de toit<\/strong>, et bien s\u00fbr le mode de vie des habitants<\/strong>. Se posent \u00e9galement les questions de l\u2019augmentation des consommations \u00e9nerg\u00e9tiques en hiver<\/strong>, des autorisations d\u2019urbanisme<\/strong> et de la durabilit\u00e9 du produit<\/strong>. Mais dans une France qui se dirige joyeusement vers un sc\u00e9nario \u00e0 +4\u00b0C, le cool roofing<\/em> fait d\u00e9finitivement des solutions pouvant \u00eatre mises en \u0153uvre pour am\u00e9liorer le confort d\u2019\u00e9t\u00e9.<\/p>

\ud83d\udcd6 Cheyssial A. (2024) – Peindre son toit en blanc, vraie arme anti-chaleur ou chou blanc\u00a0? La Maison <\/em>\u00c9cologique<\/em>, n\u00b0141, p. 24-27<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tJe veux am\u00e9liorer le confort d'\u00e9t\u00e9 dans mon habitat<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\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":"

L’effet alb\u00e9do 18 juillet 2025 Vous avez peut-\u00eatre d\u00e9j\u00e0 aper\u00e7u des toits blancs, en vous demandant si c\u2019\u00e9tait juste esth\u00e9tique ou si cela avait une vraie utilit\u00e9. Et bien les deux ! L\u2019utilisation de rev\u00eatements blancs en couverture, connue sous le nom de \u00ab\u00a0cool roofing\u00a0\u00bb, a pour objectif de r\u00e9duire l\u2019inconfort estival gr\u00e2ce \u00e0 l\u2019effet […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"full-width","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"off","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"on","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"off","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","footnotes":""},"class_list":["post-4295","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nL'effet alb\u00e9do - Avant 4 degr\u00e9s<\/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:\/\/avant4degres.fr\/en\/leffet-albedo\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'effet alb\u00e9do - Avant 4 degr\u00e9s\" \/>\n<meta property=\"og:description\" content=\"L’effet alb\u00e9do 18 juillet 2025 Vous avez peut-\u00eatre d\u00e9j\u00e0 aper\u00e7u des toits blancs, en vous demandant si c\u2019\u00e9tait juste esth\u00e9tique ou si cela avait une vraie utilit\u00e9. 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