![\"\"](\"https:\/\/conseiltravaux.fr\/mag\/wp-content\/uploads\/2026\/09\/Remplacer-une-marquise-ancienne-1-1024x576.png\")
<\/figure>\n<\/div>\n<\/div>\n\n\n\nPremier examen : la structure porteuse<\/h2>\n\n\n\n
Tapotez les profil\u00e9s au marteau l\u00e9ger. Un son clair signale un m\u00e9tal sain, un son mat trahit une corrosion feuilletante sous la peinture. Inspectez ensuite les points de fixation au mur : c’est l\u00e0 que l’eau s’infiltre et que le fer gonfle en \u00e9cartant la ma\u00e7onnerie. Si les consoles et les ancrages sont sains, la marquise est presque toujours r\u00e9cup\u00e9rable.<\/p>\n\n\n\n
Une d\u00e9formation de la structure, en revanche, indique une surcharge ancienne, souvent due \u00e0 une accumulation de neige ou \u00e0 un remplacement du vitrage par un verre plus lourd que celui d’origine.<\/p>\n\n\n\n
Deuxi\u00e8me examen : le vitrage<\/h2>\n\n\n\n
Les marquises anciennes re\u00e7oivent le plus souvent un verre arm\u00e9, aujourd’hui d\u00e9conseill\u00e9 pour les toitures accessibles au regard : en cas de casse, l’armature ne retient pas les \u00e9clats de fa\u00e7on fiable. Le remplacement par un verre feuillet\u00e9 de s\u00e9curit\u00e9 est presque syst\u00e9matique lors d’une r\u00e9novation, ce qui impose de v\u00e9rifier que la structure supporte la surcharge, g\u00e9n\u00e9ralement l\u00e9g\u00e8re.<\/p>\n\n\n\n
Troisi\u00e8me examen : l’\u00e9vacuation des eaux<\/h2>\n\n\n\n
Une marquise sans pente ou dont la goutti\u00e8re est bouch\u00e9e provoque des stagnations, premi\u00e8re cause de corrosion. Toute r\u00e9novation doit r\u00e9tablir une pente minimale et une \u00e9vacuation dirig\u00e9e hors du passage. Ce point est trop souvent n\u00e9glig\u00e9, et il condamne des restaurations pourtant soign\u00e9es.<\/p>\n\n\n\n
Restaurer : ce que \u00e7a implique<\/h2>\n\n\n\n
D\u00e9pose, d\u00e9capage complet, remplacement des sections trop atteintes, reprise des soudures, traitement anticorrosion, remontage et pose d’un vitrage neuf. Comptez g\u00e9n\u00e9ralement entre mille cinq cents et trois mille cinq cents euros selon la surface et la complexit\u00e9 du dessin.<\/p>\n\n\n\n
Remplacer : quand c’est la bonne d\u00e9cision<\/h2>\n\n\n\n
Structure d\u00e9form\u00e9e, corrosion perforante g\u00e9n\u00e9ralis\u00e9e, fixations arrach\u00e9es avec d\u00e9gradation de la ma\u00e7onnerie : dans ces cas, la restauration co\u00fbte davantage qu’un ouvrage neuf. Une marquise en fer forg\u00e9 sur mesure se dessine alors \u00e0 partir des photographies de l’ancienne, ce qui permet de conserver l’esprit de la fa\u00e7ade avec une structure conforme et correctement drain\u00e9e. Marquise Fer travaille sur relev\u00e9, avec un dessin valid\u00e9 avant fabrication.<\/p>\n\n\n\n
Ce que dit l’urbanisme<\/h2>\n\n\n\n
La modification de l’aspect ext\u00e9rieur d’un b\u00e2timent existant rel\u00e8ve d’une d\u00e9claration pr\u00e9alable de travaux. En secteur prot\u00e9g\u00e9, l’avis de l’architecte des B\u00e2timents de France s’ajoute, avec un d\u00e9lai d’instruction rallong\u00e9. Restaurer \u00e0 l’identique simplifie consid\u00e9rablement le dossier ; changer le dessin ou les mat\u00e9riaux le complique.<\/p>\n\n\n\n
La bonne s\u00e9quence<\/h2>\n\n\n\n
Photographier l’existant sous tous les angles avant toute d\u00e9pose. Faire \u00e9tablir deux devis, l’un en restauration, l’autre en remplacement. D\u00e9poser le dossier d’urbanisme avant commande. Et dans tous les cas, traiter l’\u00e9vacuation des eaux : c’est elle qui d\u00e9cidera de la dur\u00e9e de vie de l’ouvrage, quel qu’il soit.<\/p>\n","protected":false},"excerpt":{"rendered":"
La marquise abrite l’entr\u00e9e depuis un si\u00e8cle, mais son vitrage est f\u00eal\u00e9, sa structure piqu\u00e9e de rouille et son \u00e9vacuation […]<\/p>\n","protected":false},"author":1,"featured_media":1078,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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-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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[1,19],"tags":[],"class_list":["post-1076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-guides-et-conseils"],"_links":{"self":[{"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/posts\/1076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/comments?post=1076"}],"version-history":[{"count":2,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/posts\/1076\/revisions"}],"predecessor-version":[{"id":1079,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/posts\/1076\/revisions\/1079"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/media\/1078"}],"wp:attachment":[{"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/media?parent=1076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/categories?post=1076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/conseiltravaux.fr\/mag\/wp-json\/wp\/v2\/tags?post=1076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}