{"id":28521,"date":"2025-07-30T11:15:14","date_gmt":"2025-07-30T11:15:14","guid":{"rendered":"https:\/\/www.estilguru.com\/junta-de-dilatacao-para-que-serve\/"},"modified":"2025-07-30T11:15:16","modified_gmt":"2025-07-30T11:15:16","slug":"junta-de-dilatacao-para-que-serve","status":"publish","type":"post","link":"https:\/\/www.estilguru.com\/pt-pt\/junta-de-dilatacao-para-que-serve\/","title":{"rendered":"Junta de dilata\u00e7\u00e3o: O que \u00e9 e para que serve?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"28521\" class=\"elementor elementor-28521 elementor-28486\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-46bfd02 e-flex e-con-boxed e-con e-parent\" data-id=\"46bfd02\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b5f4e9 elementor-widget elementor-widget-text-editor\" data-id=\"1b5f4e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Uma <strong>junta de dilata\u00e7\u00e3o<\/strong> \u00e9 um espa\u00e7o intencional &#8211; aberto ou preenchido com um material flex\u00edvel &#8211; que \u00e9 incorporado em pavimentos, lajes, fachadas ou paredes parciais para absorver os movimentos devidos:<\/p>\n<ul>\n<li>Altera\u00e7\u00f5es de temperatura (expans\u00e3o t\u00e9rmica)<\/li>\n<li>Varia\u00e7\u00f5es de humidade<\/li>\n<li>Assentamentos diferenciais do solo<\/li>\n<li>Vibra\u00e7\u00f5es ou cargas din\u00e2micas<\/li>\n<\/ul>\n<p>\u00c9 preciso ter em conta que, se n\u00e3o forem devidamente planeadas, estas tens\u00f5es acabam por degradar o material, provocando fissuras irregulares, ladrilhos salientes ou fugas de \u00e1gua que podem comprometer a seguran\u00e7a estrutural e o conforto dos utilizadores.<\/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<div class=\"elementor-element elementor-element-a99c97b e-flex e-con-boxed e-con e-parent\" data-id=\"a99c97b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50b3eec elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"50b3eec\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTabela de Conte\u00fados\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__50b3eec\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__50b3eec\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__50b3eec\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\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<div class=\"elementor-element elementor-element-29647b6 e-flex e-con-boxed e-con e-parent\" data-id=\"29647b6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bca940d elementor-widget elementor-widget-heading\" data-id=\"bca940d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Juntas de dilata\u00e7\u00e3o entre edif\u00edcios<\/h2>\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<div class=\"elementor-element elementor-element-5f377f7 e-flex e-con-boxed e-con e-parent\" data-id=\"5f377f7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c537afe elementor-widget elementor-widget-text-editor\" data-id=\"c537afe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Quando dois volumes constru\u00eddos s\u00e3o cont\u00edguos, as diferen\u00e7as de assentamento ou de dilata\u00e7\u00e3o podem gerar tens\u00f5es concentradas na parede de separa\u00e7\u00e3o. Por esta raz\u00e3o, <strong>as juntas de dilata\u00e7\u00e3o entre edif\u00edcios<\/strong> s\u00e3o resolvidas deixando um espa\u00e7o de 10-20 cm livre de materiais r\u00edgidos, protegidos no telhado com caleiras inclinadas para escoar a \u00e1gua e na fachada com perfis met\u00e1licos ou de PVC incorporando tiras de borracha. Desta forma, garante-se que cada edif\u00edcio evolui sem transmitir movimentos aos seus vizinhos ou permitir fugas no ponto de encontro.  <\/p>\n<p data-start=\"0\" data-end=\"510\">No entanto, nem todas as juntas t\u00eam o mesmo objetivo e n\u00e3o s\u00e3o colocadas no mesmo local. Existem tr\u00eas tipos principais: <\/p>\n<ol data-start=\"512\" data-end=\"2187\">\n<li data-start=\"512\" data-end=\"995\">\n<p data-start=\"515\" data-end=\"995\"><strong data-start=\"515\" data-end=\"540\">Juntas estruturais.<\/strong>  S\u00e3o o prolongamento, no revestimento cer\u00e2mico, das juntas previstas nos suportes e estruturas subjacentes (lajes, pilares, vigas). Estas juntas devem ser respeitadas em toda a sua profundidade e largura, atravessando todas as camadas do sistema &#8211; desde o azulejo at\u00e9 \u00e0 argamassa de colagem ou qualquer pel\u00edcula de desacoplamento ou isolamento &#8211; de modo a que cada fragmento se possa mover independentemente, sem transmitir for\u00e7as ao painel adjacente. <\/p>\n<\/li>\n<li data-start=\"997\" data-end=\"1626\">\n<p data-start=\"1000\" data-end=\"1626\"><strong data-start=\"1000\" data-end=\"1024\">Juntas de per\u00edmetro.<\/strong>  Delimitam o bordo do revestimento em rela\u00e7\u00e3o aos elementos de constru\u00e7\u00e3o r\u00edgidos &#8211; paredes, pilares, caixas &#8211; que n\u00e3o partilham a mesma capacidade de movimento. Gra\u00e7as a esta separa\u00e7\u00e3o, as desloca\u00e7\u00f5es da parede n\u00e3o afectam o pavimento ou o rodap\u00e9, e vice-versa. Nas habita\u00e7\u00f5es, quando a superf\u00edcie a revestir \u00e9 inferior a 10 m\u00b2, estas juntas podem ser eliminadas por raz\u00f5es de conce\u00e7\u00e3o ou de higiene, desde que os ladrilhos estejam a 5 mm de dist\u00e2ncia do elemento vertical. Em qualquer outro caso, a junta perimetral deve ter uma largura m\u00ednima de 6 mm e atingir a camada separadora para cumprir a sua fun\u00e7\u00e3o.   <\/p>\n<\/li>\n<li data-start=\"1628\" data-end=\"2187\">\n<p data-start=\"1631\" data-end=\"2187\"><strong data-start=\"1631\" data-end=\"1654\">Juntas interm\u00e9dias.<\/strong>  Dividem o revestimento de azulejos em pe\u00e7as mais pequenas &#8211; normalmente rectangulares ou quadradas &#8211; para que cada fragmento de azulejo possa reagir \u00e0s altera\u00e7\u00f5es t\u00e9rmicas e de humidade com menos esfor\u00e7o. Em instala\u00e7\u00f5es sem aquecimento por piso radiante, s\u00e3o normalmente espa\u00e7ados linearmente a cada 8-10 m, tamb\u00e9m at\u00e9 \u00e0 camada separadora. Nos pavimentos com aquecimento por pavimento radiante, esta subdivis\u00e3o \u00e9 ajustada a grelhas de cerca de 25 m\u00b2 (ou a cada 5 m lineares) para acomodar a temperatura e o movimento do sistema de aquecimento.  <\/p>\n<\/li>\n<\/ol>\n<p data-start=\"2189\" data-end=\"2653\" data-is-last-node=\"\" data-is-only-node=\"\">Dado que um revestimento cer\u00e2mico \u00e9, na realidade, um sistema multicamada (ladrilho, cola, argamassa de distribui\u00e7\u00e3o, placas de desacoplamento ou impermeabiliza\u00e7\u00e3o, isolamento), a correta execu\u00e7\u00e3o destas tr\u00eas categorias de juntas &#8211; estruturais, perimetrais e interm\u00e9dias &#8211; \u00e9 fundamental para que cada camada cumpra a sua miss\u00e3o sem interferir com as restantes. Desta forma, minimizam-se as tens\u00f5es internas e maximiza-se a vida \u00fatil do pavimento e do pr\u00f3prio edif\u00edcio (s\u00e3o o complemento perfeito das <a href=\"https:\/\/www.estilguru.com\/pt-pt\/folhas-impermeaveis\/lamina-desolidarizante-g-flex\/\" target=\"_blank\" rel=\"noopener\">placas de desacoplamento<\/a> que protegem os ladrilhos e a estrutura). <\/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<div class=\"elementor-element elementor-element-949364c e-flex e-con-boxed e-con e-parent\" data-id=\"949364c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ff22b7 elementor-widget elementor-widget-heading\" data-id=\"9ff22b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conce\u00e7\u00e3o de juntas de dilata\u00e7\u00e3o em pavimentos e bet\u00e3o<\/h3>\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<div class=\"elementor-element elementor-element-a845a8e e-flex e-con-boxed e-con e-parent\" data-id=\"a845a8e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1a15943 elementor-widget elementor-widget-text-editor\" data-id=\"1a15943\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Num pavimento de bet\u00e3o, a <strong>junta de dilata\u00e7\u00e3o no pavimento<\/strong> \u00e9 normalmente feita atrav\u00e9s de cortes ranhurados de 3-5 mm a cada 5-8 m, que deixam as sec\u00e7\u00f5es da laje livres para se moverem sem ro\u00e7ar na adjacente. Quando o acabamento \u00e9 cer\u00e2mico, \u00e9 prefer\u00edvel utilizar perfis de PVC el\u00e1sticos ou tiras de borracha a cada 4-6 m para absorver a expans\u00e3o e a contra\u00e7\u00e3o sem danificar as pe\u00e7as. <\/p>\n<p>Para uma <strong>junta de dilata\u00e7\u00e3o de bet\u00e3o<\/strong> em lajes de pavimento ou elementos pr\u00e9-fabricados, \u00e9 habitual cortar at\u00e9 \u00bc ou \u2153 da espessura da laje, de modo a que o plano de fissura\u00e7\u00e3o preferido ocorra na junta. Desta forma, cada fragmento de bet\u00e3o pode mover-se de forma independente, evitando a fissura\u00e7\u00e3o aleat\u00f3ria. Nestes casos, \u00e9 aconselh\u00e1vel encher com espuma de poliuretano ou instalar perfis met\u00e1licos selados elasticamente que, para al\u00e9m de absorverem o movimento, impedem a entrada de \u00e1gua.  <\/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<div class=\"elementor-element elementor-element-c80d588 e-flex e-con-boxed e-con e-parent\" data-id=\"c80d588\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-93689a9 elementor-widget elementor-widget-image\" data-id=\"93689a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2-1024x683.jpg\" class=\"attachment-large size-large wp-image-28496\" alt=\"\" srcset=\"https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2-1024x683.jpg 1024w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2-300x200.jpg 300w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2-768x512.jpg 768w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2-600x400.jpg 600w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/junta-de-dilataacion-2.jpg 1382w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cdc9d63 e-flex e-con-boxed e-con e-parent\" data-id=\"cdc9d63\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43ddf91 elementor-widget elementor-widget-heading\" data-id=\"43ddf91\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Tipos de juntas de dilata\u00e7\u00e3o<\/h3>\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<div class=\"elementor-element elementor-element-293b5d3 e-flex e-con-boxed e-con e-parent\" data-id=\"293b5d3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2de2a09 elementor-widget elementor-widget-text-editor\" data-id=\"2de2a09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<thead>\n<tr>\n<td>\n<p><strong>\u00cdcone<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Tipo de junta<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Material de enchimento<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Largura recomendada<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Separa\u00e7\u00e3o t\u00edpica<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Utiliza\u00e7\u00e3o principal<\/strong><\/p>\n<\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\n<p>\ud83d\udd2a<\/p>\n<\/td>\n<td>\n<p>Junta de veda\u00e7\u00e3o ranhurada<\/p>\n<\/td>\n<td>\n<p>Corte a seco (n\u00e3o preenchido)<\/p>\n<\/td>\n<td>\n<p>3-5 mm<\/p>\n<\/td>\n<td>\n<p>5-8 m (bet\u00e3o)<\/p>\n<\/td>\n<td>\n<p>Betonilhas e instala\u00e7\u00f5es<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udcd0<\/p>\n<\/td>\n<td>\n<p>Junta de veda\u00e7\u00e3o com perfil de PVC<\/p>\n<\/td>\n<td>\n<p>Perfil el\u00e1stico em PVC<\/p>\n<\/td>\n<td>\n<p>8-12 mm<\/p>\n<\/td>\n<td>\n<p>4-6 m (cer\u00e2mica)<\/p>\n<\/td>\n<td>\n<p>Pavimentos interiores<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udede<\/p>\n<\/td>\n<td>\n<p>Junta de borracha (neoprene)<\/p>\n<\/td>\n<td>\n<p>Borracha EPDM<\/p>\n<\/td>\n<td>\n<p>10-15 mm<\/p>\n<\/td>\n<td>\n<p>6-10 m (exterior)<\/p>\n<\/td>\n<td>\n<p>Zonas pedonais e pra\u00e7as<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udd27<\/p>\n<\/td>\n<td>\n<p>Junta com vedante el\u00e1stico<\/p>\n<\/td>\n<td>\n<p>Poliuretano ou pol\u00edmero MS<\/p>\n<\/td>\n<td>\n<p>5-20 mm<\/p>\n<\/td>\n<td>\n<p>De acordo com o movimento planeado<\/p>\n<\/td>\n<td>\n<p>Terra\u00e7os, varandas, piscinas<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udca7<\/p>\n<\/td>\n<td>\n<p>Pel\u00edcula el\u00e1stica <strong>Water-Stop<\/strong><\/p>\n<\/td>\n<td>\n<p>Membrana PUR\/EVAC + banda W-S<\/p>\n<\/td>\n<td>\n<p>20-30 mm (zona de refor\u00e7o)<\/p>\n<\/td>\n<td>\n<p>Ilimitado (cont\u00ednuo)<\/p>\n<\/td>\n<td>\n<p>Pisos, fachadas, juntas entre edif\u00edcios<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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<div class=\"elementor-element elementor-element-f2d3d1c e-flex e-con-boxed e-con e-parent\" data-id=\"f2d3d1c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ba2fed elementor-widget elementor-widget-text-editor\" data-id=\"9ba2fed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>A pel\u00edcula Water-Stop<\/strong> proporciona uma veda\u00e7\u00e3o cont\u00ednua e ininterrupta, capaz de absorver grandes movimentos (\u00b1 20 %), com resist\u00eancia aos raios UV e aos produtos qu\u00edmicos e com uma vida \u00fatil ilimitada (sujeita \u00e0 estrutura). <\/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<div class=\"elementor-element elementor-element-26ca49c e-flex e-con-boxed e-con e-parent\" data-id=\"26ca49c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-36a4a66 elementor-widget elementor-widget-heading\" data-id=\"36a4a66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Impermeabiliza\u00e7\u00e3o de juntas de dilata\u00e7\u00e3o<\/h2>\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<div class=\"elementor-element elementor-element-91b6656 e-flex e-con-boxed e-con e-parent\" data-id=\"91b6656\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40bb7c9 elementor-widget elementor-widget-text-editor\" data-id=\"40bb7c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A veda\u00e7\u00e3o da junta de dilata\u00e7\u00e3o \u00e9 t\u00e3o importante como a sua conce\u00e7\u00e3o correta. Existem v\u00e1rios m\u00e9todos, cada um com os seus pr\u00f3s e contras: <\/p>\n<ul>\n<li>Vedantes de poliuretano: enchimentos que s\u00e3o aplicados diretamente na fenda. Embora sejam f\u00e1ceis de utilizar, tendem a fissurar com movimentos muito grandes e a sua resist\u00eancia aos raios UV \u00e9 limitada, provocando microfissuras ao longo do tempo. <\/li>\n<li>Perfis de PVC ou alum\u00ednio: Sistemas r\u00edgidos que s\u00e3o aparafusados ou ancorados nas extremidades da junta. A sua correta instala\u00e7\u00e3o requer precis\u00e3o e, em juntas curvas ou com movimentos t\u00e9rmicos extremos, podem ficar desalinhados, deixando espa\u00e7os por onde pode entrar \u00e1gua. <\/li>\n<li>Fita but\u00edlica: Uma fita auto-adesiva de poliisobutileno que proporciona uma veda\u00e7\u00e3o r\u00e1pida. No entanto, a sua baixa resist\u00eancia mec\u00e2nica e a predisposi\u00e7\u00e3o para se descolar na presen\u00e7a de p\u00f3 ou humidade pr\u00e9via tornam-na pouco fi\u00e1vel em \u00e1reas de tr\u00e1fego intenso. <\/li>\n<li>Membrana <a href=\"https:\/\/www.estilguru.com\/pt-pt\/folhas-impermeaveis\/lamina-impermeavel-agua-stop\/\">de impermeabiliza\u00e7\u00e3o el\u00e1stica Water-Stop<\/a>: Membrana de poliolefina (PUR\/EVAC) refor\u00e7ada com geot\u00eaxtil e complementada com banda W-S. Esta solu\u00e7\u00e3o tem uma ader\u00eancia total \u00e0 argamassa de base e \u00e9 capaz de suportar dilata\u00e7\u00f5es de \u00b120 %. Resiste tamb\u00e9m a pequenos movimentos estruturais, ao tr\u00e1fego pedonal e garante a estanquidade mesmo em condi\u00e7\u00f5es exigentes.  <\/li>\n<\/ul>\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<div class=\"elementor-element elementor-element-a9b0667 e-flex e-con-boxed e-con e-parent\" data-id=\"a9b0667\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9d23e57 elementor-widget elementor-widget-text-editor\" data-id=\"9d23e57\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table>\n<thead>\n<tr>\n<td>\n<p><strong>\u00cdcone<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Vantagem<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Descri\u00e7\u00e3o<\/strong><\/p>\n<\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\n<p>\ud83d\udd12<\/p>\n<\/td>\n<td>\n<p>Veda\u00e7\u00e3o cont\u00ednua<\/p>\n<\/td>\n<td>\n<p>Barreira ininterrupta sob o revestimento, sem pontos fracos onde a \u00e1gua possa infiltrar-se.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\u2194\ufe0f<\/p>\n<\/td>\n<td>\n<p>Elevada elasticidade<\/p>\n<\/td>\n<td>\n<p>Absorve movimentos de expans\u00e3o e contra\u00e7\u00e3o at\u00e9 \u00b120 % sem fissurar.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\u2600\ufe0f<\/p>\n<\/td>\n<td>\n<p>Resist\u00eancia aos raios UV e aos produtos qu\u00edmicos<\/p>\n<\/td>\n<td>\n<p>Mant\u00e9m as suas propriedades sendo resistente \u00e0 radia\u00e7\u00e3o solar, aos hidrocarbonetos e a muitos produtos industriais.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83e\uddf1<\/p>\n<\/td>\n<td>\n<p>Compatibilidade com argamassas<\/p>\n<\/td>\n<td>\n<p>Adere perfeitamente a argamassas e colas C2\/C2FT sem necessidade de prim\u00e1rios especiais.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udeb6<\/p>\n<\/td>\n<td>\n<p>Tr\u00e1fego pedonal ligeiro<\/p>\n<\/td>\n<td>\n<p>Adequado para \u00e1reas interiores e exteriores, suportando o tr\u00e1fego de pe\u00f5es e ve\u00edculos ligeiros.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\ud83d\udee0\ufe0f<\/p>\n<\/td>\n<td>\n<p>Instala\u00e7\u00e3o simples<\/p>\n<\/td>\n<td>\n<p>Aplica\u00e7\u00e3o da placa flex\u00edvel com argamassa adesiva e tiras sobrepostas, sem necessidade de trabalhos complexos.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>\u221e<\/p>\n<\/td>\n<td>\n<p>Tempo de vida ilimitado <em>(sujeito \u00e0 estrutura)<\/em><\/p>\n<\/td>\n<td>\n<p>Desde que a estrutura possa suportar os movimentos, a membrana n\u00e3o necessita de ser substitu\u00edda periodicamente.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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<div class=\"elementor-element elementor-element-fd51577 e-flex e-con-boxed e-con e-parent\" data-id=\"fd51577\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0f62aef elementor-widget elementor-widget-heading\" data-id=\"0f62aef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Como impermeabilizar uma junta de dilata\u00e7\u00e3o com Water-Stop?<\/h3>\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<div class=\"elementor-element elementor-element-c64c63b e-flex e-con-boxed e-con e-parent\" data-id=\"c64c63b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7b19a48 elementor-widget elementor-widget-text-editor\" data-id=\"7b19a48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Para aplicar corretamente o Water-Stop, segue o &#8220;Guia de instala\u00e7\u00e3o do Water-Stop para coberturas&#8221;:<\/p>\n<ol>\n<li>Prepara <strong>o substrato<\/strong>: Junta \u2265 30 mm de largura, bordos chanfrados a 45\u00b0; limpa e seca a superf\u00edcie.<\/li>\n<li><strong>Aplicar a argamassa adesiva<\/strong>: esp\u00e1tula dentada 4\u00d74\u00d74 mm; argamassa C2, 2-2,5 kg\/m\u00b2.<\/li>\n<li><strong>Colocar a membrana<\/strong>: Deixar 150 mm de sobreposi\u00e7\u00e3o, pressionar com uma esp\u00e1tula lisa.<\/li>\n<li><strong>Refor\u00e7o de juntas<\/strong>: P\u00e1ra a pel\u00edcula 20-30 cm antes, coloca a banda W-S centrada (fole de 20 mm) e veda at\u00e9 20 cm de altura.<\/li>\n<li><strong>Selagem de sobreposi\u00e7\u00f5es<\/strong>: Sobreposi\u00e7\u00e3o de 100 mm, selar as juntas com W-S Mastic ou W-S Butyl.<\/li>\n<li><strong>Acabamento<\/strong>: Tr\u00e1fego ligeiro em 24 h; normal em 48 h (&lt; 10 m\u00b2). Preencher com argamassa ou silicone sanit\u00e1rio. <\/li>\n<\/ol>\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<div class=\"elementor-element elementor-element-db0ebbe e-flex e-con-boxed e-con e-parent\" data-id=\"db0ebbe\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-952defa elementor-widget elementor-widget-image\" data-id=\"952defa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"420\" src=\"https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-1024x420.png\" class=\"attachment-large size-large wp-image-28501\" alt=\"junta de dilataci\u00f3n\" srcset=\"https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-1024x420.png 1024w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-300x123.png 300w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-768x315.png 768w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-1536x629.png 1536w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-2048x839.png 2048w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-600x246.png 600w, https:\/\/www.estilguru.com\/wp-content\/uploads\/2025\/07\/Recurso-1-scaled.png 1900w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65c2c05 e-flex e-con-boxed e-con e-parent\" data-id=\"65c2c05\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b632ef5 elementor-widget elementor-widget-heading\" data-id=\"b632ef5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Perguntas frequentes sobre juntas de instala\u00e7\u00e3o<\/h2>\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<div class=\"elementor-element elementor-element-53c529c e-flex e-con-boxed e-con e-parent\" data-id=\"53c529c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cb7d59c elementor-widget elementor-widget-text-editor\" data-id=\"cb7d59c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Com que frequ\u00eancia devo instalar uma junta de dilata\u00e7\u00e3o do pavimento?<\/strong><br \/>Em bet\u00e3o, a cada 5-8 m; em cer\u00e2mica, a cada 4-6 m.<\/p>\n<p><strong>Qual \u00e9 a diferen\u00e7a entre uma junta de controlo e uma junta de dilata\u00e7\u00e3o?<\/strong><br \/>A junta de controlo gere pequenas fissuras; a junta de dilata\u00e7\u00e3o absorve movimentos maiores.<\/p>\n<p><strong>Como dimensionar uma junta de dilata\u00e7\u00e3o em bet\u00e3o?<\/strong><br \/>\u0394L = \u03b1-L-\u0394T, mais 10 % de seguran\u00e7a.<\/p>\n<p><strong>Que separa\u00e7\u00e3o deve ser deixada entre os edif\u00edcios?<\/strong><br \/>10-20 cm, com perfis e caleiras estanques.<\/p>\n<p><strong>O Water-Stop \u00e9 adequado para a impermeabiliza\u00e7\u00e3o de juntas de dilata\u00e7\u00e3o em fachadas e telhados?<\/strong><br \/>Sim, est\u00e1 homologado para coberturas planas, telhados planos e jun\u00e7\u00f5es, com dura\u00e7\u00e3o ilimitada (sujeito \u00e0 estrutura).<\/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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Uma junta de dilata\u00e7\u00e3o \u00e9 um espa\u00e7o intencional &#8211; aberto ou preenchido com um material flex\u00edvel &#8211; que \u00e9 incorporado em pavimentos, lajes, fachadas ou paredes parciais para absorver os movimentos devidos: Altera\u00e7\u00f5es de temperatura (expans\u00e3o t\u00e9rmica) Varia\u00e7\u00f5es de humidade Assentamentos diferenciais do solo Vibra\u00e7\u00f5es ou cargas din\u00e2micas \u00c9 preciso ter em conta que, se &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.estilguru.com\/pt-pt\/junta-de-dilatacao-para-que-serve\/\"> <span class=\"screen-reader-text\">Junta de dilata\u00e7\u00e3o: O que \u00e9 e para que serve?<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":28516,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[59],"tags":[],"class_list":["post-28521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sem-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Junta de dilata\u00e7\u00e3o: O que \u00e9 e para que serve? - Estil Guru<\/title>\n<meta name=\"description\" content=\"Sabes o que \u00e9 uma junta de dilata\u00e7\u00e3o e para que serve? 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