{"id":17056,"date":"2026-01-07T08:15:00","date_gmt":"2026-01-07T08:15:00","guid":{"rendered":"https:\/\/archipad.com\/?p=17056"},"modified":"2025-12-19T15:30:42","modified_gmt":"2025-12-19T15:30:42","slug":"dtu-43-1","status":"publish","type":"post","link":"https:\/\/archipad.com\/fr\/dtu-43-1\/","title":{"rendered":"La norme DTU 43.1 : ce que vous devez savoir"},"content":{"rendered":"\n<p>Le DTU 43.1 est fr\u00e9quemment cit\u00e9 dans les CCTP, mais sa lecture reste technique. Sur chantier, une interpr\u00e9tation impr\u00e9cise se traduit par des \u00e9carts d\u2019ex\u00e9cution sur les relev\u00e9s, les \u00e9vacuations ou les travers\u00e9es, puis par des r\u00e9serves \u00e0 l\u2019OPR et des reprises.<\/p>\n\n\n\n<p>Cet article pr\u00e9sente ce qu\u2019est le <strong>DTU 43.1<\/strong>, son domaine d\u2019application et le cadre juridique \u00e0 conna\u00eetre. Il synth\u00e9tise ensuite les <strong>exigences techniques<\/strong> (support, composition du complexe, protections, points singuliers) et propose une <strong>m\u00e9thode de mise en \u0153uvre<\/strong>.<\/p>\n\n\n\n<p>L\u2019objectif est de vous permettre de d\u00e9terminer si votre projet rel\u00e8ve du DTU 43.1, de pr\u00e9parer un dossier d\u2019ex\u00e9cution coh\u00e9rent, puis d\u2019organiser des contr\u00f4les tra\u00e7ables jusqu\u2019\u00e0 la r\u00e9ception.<\/p>\n\n\n\n<p>Voyons ce que recouvre exactement le DTU 43.1 et dans quelles conditions il s\u2019applique.<\/p>\n\n\n\n<p>Formalisez les contr\u00f4les et r\u00e9serves dans un <a href=\"https:\/\/archipad.com\/fr\/fonctionnalites\/logiciel-compte-rendu-de-chantier\/\">compte rendu<\/a> Archipad.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>En r\u00e9sum\u00e9<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00e9rifier d\u2019abord si l\u2019ouvrage entre dans le <strong>domaine du DTU 43.1<\/strong> (support, localisation, usage, exclusions).<br><\/li>\n\n\n\n<li>Structurer le dossier par couches et compatibilit\u00e9s : support, pare-vapeur, isolant, <strong>rev\u00eatement d&rsquo;\u00e9tanch\u00e9it\u00e9<\/strong>, protection.<br><\/li>\n\n\n\n<li>Formaliser les d\u00e9tails des relev\u00e9s, EP, travers\u00e9es et \u00e9quipements : ce sont les zones \u00e0 contr\u00f4ler et documenter.<br><\/li>\n\n\n\n<li>Pr\u00e9voir des preuves avant recouvrement : photos, PV, autocontr\u00f4les, rep\u00e9rage par zone.<br><\/li>\n\n\n\n<li>Utiliser <strong>Archipad<\/strong> pour centraliser les plans et tracer les contr\u00f4les.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-jet-engine-listing-grid jet-sm-gb-wrapper jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940\" data-block-id=\"jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940\" ><div class=\"jet-listing-grid--blocks  wp-block-jet-engine-listing-grid jet-sm-gb-wrapper 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20.7288C6.41608 19.8738 5.74042 18.8683 5.24425 17.7125C4.74808 16.5567 4.5 15.3192 4.5 14C4.5 12.6808 4.74808 11.4433 5.24425 10.2875C5.74042 9.13167 6.41608 8.12625 7.27125 7.27125C8.12625 6.41608 9.13167 5.74042 10.2875 5.24425C11.4433 4.74808 12.6808 4.5 14 4.5C15.3192 4.5 16.5567 4.74808 17.7125 5.24425C18.8683 5.74042 19.8738 6.41608 20.7288 7.27125C21.5839 8.12625 22.2596 9.13167 22.7558 10.2875C23.2519 11.4433 23.5 12.6808 23.5 14C23.5 15.3192 23.2519 16.5567 22.7558 17.7125C22.2596 18.8683 21.5839 19.8738 20.7288 20.7288C19.8738 21.5839 18.8683 22.2596 17.7125 22.7558C16.5567 23.2519 15.3192 23.5 14 23.5ZM14 22C14.9025 22 15.7727 21.8548 16.6105 21.5645C17.4483 21.274 18.1922 20.8679 18.8422 20.3462C18.1922 19.8436 17.458 19.4519 16.6395 19.1712C15.8208 18.8904 14.941 18.75 14 18.75C13.059 18.75 12.1776 18.8888 11.3558 19.1663C10.5339 19.4439 9.80125 19.8372 9.15775 20.3462C9.80775 20.8679 10.5517 21.274 11.3895 21.5645C12.2273 21.8548 13.0975 22 14 22ZM14 13.25C14.4975 13.25 14.9135 13.0827 15.248 12.748C15.5827 12.4135 15.75 11.9975 15.75 11.5C15.75 11.0025 15.5827 10.5865 15.248 10.252C14.9135 9.91733 14.4975 9.75 14 9.75C13.5025 9.75 13.0865 9.91733 12.752 10.252C12.4173 10.5865 12.25 11.0025 12.25 11.5C12.25 11.9975 12.4173 12.4135 12.752 12.748C13.0865 13.0827 13.5025 13.25 14 13.25Z\" fill=\"white\"><\/path><\/g><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\t+150 000\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tUtilisateurs\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<a href=\"https:\/\/auth.archipad.com\/registration?return_to=https:\/\/archipad.com\/fr\/page-remerciement-inscription\" class=\"jet-engine-listing-overlay-link\" target=\"_blank\"><\/a><\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Qu\u2019est-ce que le DTU 43.1 ? Comment l\u2019appliquer ?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D\u00e9finition et r\u00f4le<\/strong><\/h3>\n\n\n\n<p>Le <a href=\"https:\/\/www.boutique.afnor.org\/fr-fr\/norme\/nf-p84204\/dtu-431-travaux-de-batiment-etancheite-des-toituresterrasses-et-toitures-in\/fa134643\/672\" target=\"_blank\" rel=\"noopener\"><strong>DTU 43.1<\/strong><\/a> est une <strong>norme fran\u00e7aise<\/strong> (<a href=\"https:\/\/normalisation.afnor.org\/thematiques\/travaux-batiment-nf-dtu\/\" target=\"_blank\" rel=\"noopener\">NF DTU<\/a>) appartenant \u00e0 la famille des <strong>documents techniques unifi\u00e9s DTU<\/strong>. Il fixe un cadre technique pour ex\u00e9cuter une \u00e9tanch\u00e9it\u00e9 en toiture sur <strong>\u00e9l\u00e9ments porteurs en ma\u00e7onnerie<\/strong>.<\/p>\n\n\n\n<p>Dans les op\u00e9rations qu\u2019il couvre, le DTU 43.1 encadre :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>l\u2019organisation d\u2019un syst\u00e8me d\u2019\u00e9tanch\u00e9it\u00e9 (dont <strong>rev\u00eatement d&rsquo;\u00e9tanch\u00e9it\u00e9<\/strong>, \u00e9ventuelle <strong>isolation thermique<\/strong>, protections, y compris <strong>protection lourde<\/strong> selon destination) ;<br><\/li>\n\n\n\n<li>les dispositions d\u2019ex\u00e9cution sur les zones sensibles (pentes, relev\u00e9s, travers\u00e9es, \u00e9vacuations) ;<br><\/li>\n\n\n\n<li>les contr\u00f4les \u00e0 pr\u00e9voir en cours de chantier et \u00e0 la <a href=\"https:\/\/archipad.com\/fr\/reception-chantier\/\">r\u00e9ception<\/a> (autocontr\u00f4les, visas, constats avant recouvrement), selon le DTU et les pi\u00e8ces du march\u00e9.<\/li>\n<\/ul>\n\n\n\n<p>Il traite principalement l\u2019<strong>\u00e9tanch\u00e9it\u00e9 des toitures terrasses<\/strong> et peut concerner des configurations de <strong>terrasses et toitures inclin\u00e9es<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Dans les pi\u00e8ces de march\u00e9, les formulations <strong>toitures inclin\u00e9es avec \u00e9l\u00e9ments<\/strong> porteurs ou <strong>inclin\u00e9es avec \u00e9l\u00e9ments porteurs<\/strong> apparaissent : elles renvoient \u00e0 la v\u00e9rification du domaine d\u2019emploi et \u00e0 la compatibilit\u00e9 du proc\u00e9d\u00e9 retenu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Cadre juridique et domaine d\u2019application<\/strong><\/h3>\n\n\n\n<p>Pour l\u2019utiliser correctement, il faut distinguer trois notions :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Norme<\/strong> : le NF DTU 43.1 est un texte de normalisation ; il fixe des prescriptions et des modalit\u00e9s de contr\u00f4le.<br><\/li>\n\n\n\n<li><strong>Application<\/strong> : il ne s\u2019applique pas automatiquement ; l\u2019ouvrage doit entrer dans son domaine.<br><\/li>\n\n\n\n<li><strong>Opposabilit\u00e9<\/strong> : il devient exigible lorsque les pi\u00e8ces du march\u00e9 le rendent applicable (<a href=\"https:\/\/www.code-commande-publique.com\/cahier-des-clauses-techniques-particulieres-cctp\/\" target=\"_blank\" rel=\"noopener\">CCTP<\/a>, clauses techniques, notices, prescriptions).<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Sur le plan contractuel :<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>en march\u00e9 priv\u00e9, l\u2019application est souvent volontaire, mais le DTU devient opposable d\u00e8s qu\u2019il est vis\u00e9 au contrat ;<br><\/li>\n\n\n\n<li>en march\u00e9 public, il est souvent utilis\u00e9 comme r\u00e9f\u00e9rence d\u2019ex\u00e9cution dans les DCE.<\/li>\n<\/ul>\n\n\n\n<p>Le DTU 43.1 n\u2019est donc pas toujours obligatoire. Avant de le retenir, il faut v\u00e9rifier le domaine, notamment :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>localisation : <strong>France m\u00e9tropolitaine<\/strong> et <strong>climat de plaine<\/strong> ;<br><\/li>\n\n\n\n<li>support : <strong>\u00e9l\u00e9ments porteurs en ma\u00e7onnerie<\/strong> ;<br><\/li>\n\n\n\n<li>usage : b\u00e2timent d\u2019usage courant ;<br><\/li>\n\n\n\n<li>exclusion typique : locaux \u00e0 <strong>temp\u00e9rature contr\u00f4l\u00e9e inf\u00e9rieure<\/strong> \u00e0 0 \u00b0C.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Sur le plan juridique :<\/strong><\/h4>\n\n\n\n<p>Trois rep\u00e8res structurent la conduite du chantier :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La <strong>r\u00e9ception<\/strong> (Code civil,<a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000006443552\" target=\"_blank\" rel=\"noopener\"> article 1792-6<\/a>) d\u00e9clenche les garanties et formalise l\u2019\u00e9tat accept\u00e9.<br><\/li>\n\n\n\n<li>La responsabilit\u00e9 des constructeurs (Code civil, <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000006443502\" target=\"_blank\" rel=\"noopener\">articles 1792<\/a> et suivants) peut \u00eatre engag\u00e9e en cas de dommage rendant l\u2019ouvrage impropre \u00e0 sa destination, notamment lors d\u2019infiltrations.<br><\/li>\n\n\n\n<li>L\u2019assurance de responsabilit\u00e9 <a href=\"https:\/\/www.service-public.gouv.fr\/particuliers\/vosdroits\/F2034\" target=\"_blank\" rel=\"noopener\">d\u00e9cennale<\/a> s\u2019inscrit dans l\u2019assurance construction pr\u00e9vue par le Code des assurances.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Ce que le DTU 43.1 ne couvre pas :<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les proc\u00e9d\u00e9s non traditionnels\/innovants ou les configurations hors domaine: on sort du \u201cDTU seul\u201d et on bascule vers avis technique\/DTA et prescriptions sp\u00e9cifiques<\/li>\n\n\n\n<li>Si le DTU est cit\u00e9 mais que l\u2019ouvrage n\u2019entre pas dans le domaine : risque contractuel, \u00e0 clarifier dans les pi\u00e8ces de march\u00e9.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>DTU 43.1 : quelles exigences techniques ?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Lecture \u201csyst\u00e8me\u201d d\u2019une toiture \u00e9tanch\u00e9e<\/strong><\/h3>\n\n\n\n<p>Un ouvrage conforme se raisonne en couches :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>support porteur en ma\u00e7onnerie ;<br><\/li>\n\n\n\n<li>pare-vapeur (selon hygrothermie) ;<br><\/li>\n\n\n\n<li><strong>isolation thermique<\/strong> (panneaux isolants non porteurs) ;<br><\/li>\n\n\n\n<li><strong>rev\u00eatement d&rsquo;\u00e9tanch\u00e9it\u00e9<\/strong> (proc\u00e9d\u00e9 prescrit) ;<br><\/li>\n\n\n\n<li>protection, pouvant aller jusqu\u2019\u00e0 une <strong>protection lourde<\/strong>.<br><\/li>\n<\/ul>\n\n\n\n<p>La destination influence la protection : <strong>toitures inaccessibles<\/strong>, terrasses accessibles, ou <strong>toiture terrasse jardin<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Chaque cas modifie les contraintes de charges, de circulation, d\u2019entretien et de d\u00e9tails (seuils, relev\u00e9s, acc\u00e8s aux \u00e9vacuations).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Choix des mat\u00e9riaux : crit\u00e8res \u00e0 v\u00e9rifier<\/strong><\/h3>\n\n\n\n<p>Les crit\u00e8res les plus d\u00e9terminants se v\u00e9rifient avant la pose :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>support : \u00e9tat de surface, coh\u00e9sion, pente, joints ;<br><\/li>\n\n\n\n<li>fixation\/adh\u00e9rence : m\u00e9canique, collage, soudure selon proc\u00e9d\u00e9 ;<br><\/li>\n\n\n\n<li>charges : exploitation, protection, zones techniques, v\u00e9g\u00e9talisation ;<br><\/li>\n\n\n\n<li>maintenance : acc\u00e8s, cheminements, protection des zones de service.<\/li>\n<\/ul>\n\n\n\n<p>Pour couvrir le lexique des proc\u00e9d\u00e9s rencontr\u00e9s en dossier, l\u2019identification suivante est utile d\u00e8s l\u2019\u00e9tude :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>syst\u00e8mes bicouches \u00e0 base de bitume modifi\u00e9 (ex. bitume \u00e9lastom\u00e8re SBS) et solutions en asphalte, selon prescriptions du proc\u00e9d\u00e9 ;<br><\/li>\n\n\n\n<li>rev\u00eatements autoprot\u00e9g\u00e9s (protection int\u00e9gr\u00e9e au rev\u00eatement) ;<br><\/li>\n\n\n\n<li>pose adh\u00e9rente, ind\u00e9pendante ou semi-ind\u00e9pendante (selon support, vent et destination) ;<br><\/li>\n\n\n\n<li>couche d\u2019ind\u00e9pendance et \u00e9cran thermique lorsque le proc\u00e9d\u00e9 le pr\u00e9voit ;<br><\/li>\n\n\n\n<li>isolation invers\u00e9e (isolant au-dessus du rev\u00eatement) uniquement si la configuration et les prescriptions applicables le permettent.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Support et \u00e9vacuation des eaux<\/strong><\/h3>\n\n\n\n<p>Avant intervention : plan\u00e9it\u00e9, pente, propret\u00e9, coh\u00e9sion, conformit\u00e9 des relev\u00e9s et des r\u00e9servations.&nbsp;<\/p>\n\n\n\n<p><strong>Les pentes doivent \u00eatre d\u00e9finies sur plans et ex\u00e9cut\u00e9es au <\/strong><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Gros_%C5%93uvre\" target=\"_blank\" rel=\"noopener\"><strong>gros \u0153uvre<\/strong><\/a><strong> (sur l\u2019\u00e9l\u00e9ment porteur ou par forme de pente).<\/strong><\/p>\n\n\n\n<p>Sur le plan fonctionnel, <strong>toiture terrasse doivent permettre<\/strong> l\u2019\u00e9coulement, la collecte et l\u2019\u00e9vacuation des eaux pluviales.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Points singuliers et ouvrages situ\u00e9s<\/strong><\/h3>\n\n\n\n<p>Les \u00e9carts se situent principalement sur : relev\u00e9s, joints, travers\u00e9es, \u00e9vacuations EP, raccords.&nbsp;<\/p>\n\n\n\n<p>Les <strong>ouvrages situ\u00e9s<\/strong> <strong>en toiture<\/strong> (\u00e9quipements CVC, p\u00e9n\u00e9trations, supports, garde-corps, costi\u00e8res) <strong>doivent \u00eatre anticip\u00e9s et d\u00e9crits<\/strong>, car ils conditionnent la continuit\u00e9 du rev\u00eatement et la possibilit\u00e9 de maintenance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Zones sismiques<\/strong><\/h3>\n\n\n\n<p>En zones sismiques (hors prescriptions sp\u00e9cifiques du DTU 43.1), coordonner les d\u00e9tails avec les r\u00e8gles structurelles applicables et les DPM (joints, \u00e9quipements, ancrages).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>M\u00e9thode de mise en \u0153uvre du DTU 43.1<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D\u00e9roul\u00e9 de chantier recommand\u00e9 : \u00e9tapes, contr\u00f4les et preuves \u00e0 conserver<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u00c9tape<\/strong><\/td><td><strong>Objectif<\/strong><\/td><td><strong>Contr\u00f4les<\/strong><\/td><td><strong>Preuves<\/strong><\/td><\/tr><tr><td>Pr\u00e9paration<\/td><td>support apte<\/td><td>pentes, propret\u00e9, r\u00e9servations<\/td><td>PV support, photos<\/td><\/tr><tr><td>D\u00e9tails<\/td><td>points singuliers d\u00e9finis<\/td><td>relev\u00e9s, EP, joints, p\u00e9n\u00e9trations<\/td><td>plans, d\u00e9tails valid\u00e9s<\/td><\/tr><tr><td>Pose des couches<\/td><td>performance<\/td><td>pare-vapeur, isolant, fixations<\/td><td>photos, r\u00e9f\u00e9rences<\/td><\/tr><tr><td>Pose \u00e9tanch\u00e9it\u00e9<\/td><td>continuit\u00e9<\/td><td>recouvrements, soudures\/collages<\/td><td>autocontr\u00f4les<\/td><\/tr><tr><td>Protection<\/td><td>durabilit\u00e9<\/td><td>protection conforme<\/td><td>PV finaux<\/td><\/tr><tr><td>R\u00e9ception<\/td><td>conformit\u00e9<\/td><td>r\u00e9serves localis\u00e9es<\/td><td>liste + lev\u00e9es<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Points de m\u00e9thode : valider le support, bloquer les interfaces inter-lots, photographier avant protection, localiser les contr\u00f4les par zone.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D\u00e9finitions rapides + lexique \u00e0 t\u00e9l\u00e9charger<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Relev\u00e9<\/strong> : partie du rev\u00eatement remontant sur une paroi.<br><\/li>\n\n\n\n<li><strong>Acrot\u00e8re : <\/strong>muret (relief) en p\u00e9riph\u00e9rie de toiture-terrasse, support des relev\u00e9s d\u2019\u00e9tanch\u00e9it\u00e9.<br><\/li>\n\n\n\n<li><strong>Costi\u00e8re<\/strong> : encadrement d\u2019un \u00e9quipement\/une ouverture en toiture, support de relev\u00e9.<br><\/li>\n\n\n\n<li><strong>Trop-plein<\/strong> : \u00e9vacuation de s\u00e9curit\u00e9 en cas d\u2019obstruction.<br><\/li>\n\n\n\n<li><strong>Pare-vapeur<\/strong> : couche limitant les transferts de vapeur d\u2019eau.<br><\/li>\n\n\n\n<li><strong>Protection lourde<\/strong> : protection rapport\u00e9e massive (dalles, gravillons, chape selon conception).<\/li>\n<\/ul>\n\n\n\n<p>Pour faciliter la lecture du DTU 43.1 et la compr\u00e9hension des termes, un<strong> lexique plus complet est \u00e0 t\u00e9l\u00e9charger<\/strong> ci-dessous :<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/archipad.com\/wp-content\/uploads\/2025\/12\/Lexique-DTU-43.1-a-telecharger.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu\u00e9 Lexique-DTU-43.1-a-telecharger.\"><\/object><a id=\"wp-block-file--media-14d3c213-2b16-40d7-b77c-c0ab0bce7b57\" href=\"https:\/\/archipad.com\/wp-content\/uploads\/2025\/12\/Lexique-DTU-43.1-a-telecharger.pdf\">Lexique-DTU-43.1-a-telecharger<\/a><a href=\"https:\/\/archipad.com\/wp-content\/uploads\/2025\/12\/Lexique-DTU-43.1-a-telecharger.pdf\" class=\"wp-block-file__button wp-element-button\" aria-describedby=\"wp-block-file--media-14d3c213-2b16-40d7-b77c-c0ab0bce7b57\" download>T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Suivi num\u00e9rique de vos DTU 43.1 avec Archipad&nbsp;<\/strong><\/h2>\n\n\n\n<p>Le DTU 43.1 impose des contr\u00f4les <strong>avant recouvrement<\/strong> (support, couches, relev\u00e9s, travers\u00e9es, \u00e9vacuations).&nbsp;<\/p>\n\n\n\n<p><strong>Archipad<\/strong> permet de structurer cette tra\u00e7abilit\u00e9 par zone :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Check-lists de contr\u00f4le<\/strong> : support, pentes, pose des couches, points singuliers, protection.<br><\/li>\n\n\n\n<li><strong>Plans et versions<\/strong> : rep\u00e9rage des EP, trop-pleins et <strong>ouvrages situ\u00e9s<\/strong>, avec diffusion de la bonne version.<br><\/li>\n\n\n\n<li><strong>Observations et r\u00e9serves<\/strong> : localisation sur plan, photos, responsable, \u00e9ch\u00e9ance, suivi de lev\u00e9e.<br><\/li>\n\n\n\n<li><strong>Historique<\/strong> : validations, reprises et preuves conserv\u00e9es pour la r\u00e9ception.<\/li>\n<\/ul>\n\n\n\n<p>Objectif : disposer d\u2019un dossier de r\u00e9ception lisible et s\u00e9curiser les \u00e9tapes qui deviennent invisibles apr\u00e8s protection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Le <strong>DTU 43.1<\/strong> est une <strong>norme fran\u00e7aise<\/strong> d\u2019ex\u00e9cution pour l\u2019\u00e9tanch\u00e9it\u00e9 sur <strong>\u00e9l\u00e9ments porteurs en ma\u00e7onnerie<\/strong>, en <strong>France m\u00e9tropolitaine<\/strong> et en <strong>climat de plaine<\/strong>, avec des exclusions comme la <strong>temp\u00e9rature contr\u00f4l\u00e9e inf\u00e9rieure<\/strong> \u00e0 0 \u00b0C.&nbsp;<\/p>\n\n\n\n<p>Il impose une logique \u201csyst\u00e8me\u201d (pare-vapeur, <strong>isolation thermique<\/strong>, <strong>rev\u00eatement d&rsquo;\u00e9tanch\u00e9it\u00e9<\/strong>, protection) et un traitement pr\u00e9cis des points singuliers et des <strong>ouvrages situ\u00e9s<\/strong>.<\/p>\n\n\n\n<p>Sur chantier, la conformit\u00e9 se s\u00e9curise par une s\u00e9quence contr\u00f4lable : support valid\u00e9, d\u00e9tails arr\u00eat\u00e9s avant pose, contr\u00f4les avant recouvrement, preuves localis\u00e9es, y compris en <strong>zones sismiques<\/strong> o\u00f9 il faut <strong>prendre en compte<\/strong> les d\u00e9placements.&nbsp;<\/p>\n\n\n\n<p>Un suivi digital facilite la tra\u00e7abilit\u00e9 et la gestion des r\u00e9serves jusqu\u2019\u00e0 la r\u00e9ception.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQ<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Est-ce que le DTU est obligatoire ?<\/strong><\/h3>\n\n\n\n<p>Un DTU devient obligatoire lorsqu\u2019il est rendu contractuel par les pi\u00e8ces du march\u00e9. Sinon, il reste un r\u00e9f\u00e9rentiel technique pour appr\u00e9cier la conformit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. O\u00f9 trouver les DTU gratuitement ?<\/strong><\/h3>\n\n\n\n<p>Les DTU complets sont g\u00e9n\u00e9ralement diffus\u00e9s via des canaux payants comme l\u2019<a href=\"https:\/\/www.afnor.org\/\" target=\"_blank\" rel=\"noopener\">AFNOR<\/a>. Des extraits existent parfois, sans valeur \u00e9quivalente au texte int\u00e9gral.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Quelle est la norme DTU pour l&rsquo;\u00e9tanch\u00e9it\u00e9 des terrasses ?<\/strong><\/h3>\n\n\n\n<p>Pour une terrasse sur ma\u00e7onnerie en <strong>climat de plaine<\/strong>, le <strong>DTU 43.1<\/strong> est la r\u00e9f\u00e9rence usuelle, si le domaine d\u2019application est rempli.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. Quel est le DTU pour l&rsquo;\u00e9tanch\u00e9it\u00e9 des toitures ?<\/strong><\/h3>\n\n\n\n<p>Le DTU d\u00e9pend du support. Pour la ma\u00e7onnerie, le <strong>DTU 43.1<\/strong> traite l\u2019\u00e9tanch\u00e9it\u00e9 des toitures-terrasses et certaines configurations associ\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. Quel est le DTU pour l&rsquo;\u00e9tanch\u00e9it\u00e9 sur b\u00e9ton ?<\/strong><\/h3>\n\n\n\n<p>Si l\u2019\u00e9l\u00e9ment porteur en b\u00e9ton est conforme au <a href=\"https:\/\/archipad.com\/fr\/dtu-20-1\/\">NF DTU 20.1<\/a>2 et que le projet est en climat de plaine, le NF DTU 43.1 peut s\u2019appliquer (\u00e0 v\u00e9rifier selon le cas).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le DTU 43.1 est fr\u00e9quemment cit\u00e9 dans les CCTP, mais sa lecture reste technique. Sur chantier, une interpr\u00e9tation impr\u00e9cise se traduit par des \u00e9carts d\u2019ex\u00e9cution sur les relev\u00e9s, les \u00e9vacuations ou les travers\u00e9es, puis par des r\u00e9serves \u00e0 l\u2019OPR et des reprises. Cet article pr\u00e9sente ce qu\u2019est le DTU 43.1, son domaine d\u2019application et le [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":17061,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jet_sm_ready_style":".jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940 .jet-listing-not-found{color: ;} ","_jet_sm_style":"{\"jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940\":{\".jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940 .jet-listing-not-found\":{\"not_found_color\":{\"value\":\"color: ;\"}}}}","_jet_sm_controls_values":"{\"jet-sm-gb-fe3c304e-b0ff-47d6-ab05-b14d844a4940\":{\"horizontal_gap\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"vertical_gap\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"loader_color\":{\"value\":\"\"},\"loader_size\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"loader_text_color\":{\"value\":\"\"},\"loader_text_typography\":{\"value\":{\"family\":\"inherit\",\"size\":14,\"s_unit\":\"px\",\"weight\":\"400\",\"transform\":\"inherit\",\"style\":\"inherit\",\"decoration\":\"inherit\",\"lineHeight\":1.2,\"lh_unit\":\"\",\"letterSpacing\":0,\"ls_unit\":\"px\"}},\"center_mode_padding\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"arrows_box_size\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"arrows_size\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"arrows_z_index\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"arrow_color\":{\"value\":\"\"},\"arrow_bg_color\":{\"value\":\"\"},\"arrow_color_hover\":{\"value\":\"\"},\"arrow_bg_color_hover\":{\"value\":\"\"},\"dots_size\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"dots_gap\":{\"value\":{\"value\":0,\"unit\":\"px\"}},\"dots_bg_color\":{\"value\":\"\"},\"dots_bg_color_hover\":{\"value\":\"\"},\"dots_bg_color_active\":{\"value\":\"\"},\"not_found_typography\":{\"value\":{\"family\":\"inherit\",\"size\":14,\"s_unit\":\"px\",\"weight\":\"400\",\"transform\":\"inherit\",\"style\":\"inherit\",\"decoration\":\"inherit\",\"lineHeight\":1.2,\"lh_unit\":\"\",\"letterSpacing\":0,\"ls_unit\":\"px\"}},\"not_found_color\":{\"value\":\"\"}}}","_jet_sm_fonts_collection":"{}","_jet_sm_fonts_links":"\"\"","footnotes":""},"categories":[178],"tags":[],"class_list":["post-17056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils-astuces"],"_links":{"self":[{"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/posts\/17056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/comments?post=17056"}],"version-history":[{"count":1,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/posts\/17056\/revisions"}],"predecessor-version":[{"id":17065,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/posts\/17056\/revisions\/17065"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/media\/17061"}],"wp:attachment":[{"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/media?parent=17056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/categories?post=17056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archipad.com\/fr\/wp-json\/wp\/v2\/tags?post=17056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}