{"id":302,"date":"2026-09-18T17:55:04","date_gmt":"2026-09-18T15:55:04","guid":{"rendered":"https:\/\/www.garden-centrum.cz\/blog\/lacnejsi-nater-na-mastny-podklad-ploche-strechy-skonci-odlupovanim\/"},"modified":"2026-09-18T17:55:04","modified_gmt":"2026-09-18T15:55:04","slug":"lacnejsi-nater-na-mastny-podklad-ploche-strechy-skonci-odlupovanim","status":"publish","type":"post","link":"https:\/\/www.garden-centrum.cz\/blog\/lacnejsi-nater-na-mastny-podklad-ploche-strechy-skonci-odlupovanim\/","title":{"rendered":"Lacn\u011bj\u0161\u00ed n\u00e1t\u011br na mastn\u00fd podklad ploch\u00e9 st\u0159echy skon\u010d\u00ed odlupov\u00e1n\u00edm d\u0159\u00edv ne\u017e spr\u00e1vn\u011b zvolen\u00fd p\u00e1s"},"content":{"rendered":"<p>Na ploch\u00e9 st\u0159e\u0161e lacn\u011bj\u0161\u00ed n\u00e1t\u011br na \u0161patn\u00fd nebo nevhodn\u00fd podklad nespoj\u00ed \u201e\u00fasporu\u201c \u2014 typicky odlupov\u00e1n\u00ed, puch\u00fd\u0159e a n\u00e1vrat vody p\u0159es detail d\u0159\u00edv, ne\u017e by vydr\u017eel spr\u00e1vn\u011b zvolen\u00fd p\u00e1s ve skladb\u011b.<\/p>\n<p><a href=\"https:\/\/bitumat.sk\/hydroizolacie\">Hydroizolace<\/a> m\u00e1 zabr\u00e1nit vod\u011b v konstrukci. Tepeln\u00e1 izolace \u0159e\u0161\u00ed \u00fanik tepla. Nejsou synonyma. U ploch\u00fdch st\u0159ech, teras a z\u00e1klad\u016f rozhoduje typ materi\u00e1lu, podklad a detail napojen\u00ed \u2014 ne to, jestli bal\u00edk vypad\u00e1 levn\u011bji na faktu\u0159e.<\/p>\n<h2>Konkr\u00e9tn\u00ed fail: n\u00e1t\u011br na mastn\u00fd \/ nesoudr\u017en\u00fd podklad m\u00edsto p\u00e1su<\/h2>\n<p>Sc\u00e9n\u00e1\u0159 z praxe sanace: majitel chce \u201en\u011bco levn\u011bj\u0161\u00edho ne\u017e p\u00e1s\u201c na star\u0161\u00ed plochou st\u0159echu. Na povrchu jsou zbytky star\u00e9ho asfaltu, prach, m\u00edsty nesoudr\u017en\u00e1 vrstva a vlhk\u00e1 m\u00edsta u atiky. M\u00edsto p\u0159\u00edpravy podkladu a volby p\u00e1sov\u00e9 membr\u00e1ny podle skladby jde tekut\u00fd n\u00e1t\u011br v jedn\u00e9 a\u017e dvou vrstv\u00e1ch \u201eproto\u017ee to p\u0159ekryje\u201c.<\/p>\n<p>Co se stane do sez\u00f3ny: u spoj\u016f a u vpusti se n\u00e1t\u011br odlupuje, vznikaj\u00ed puch\u00fd\u0159e, voda jde pod film a vyt\u00e9k\u00e1 u prostupu nebo atiky. \u00daspora na materi\u00e1lu padne na druh\u00fd v\u00fdjezd, odstran\u011bn\u00ed selhan\u00e9 vrstvy a \u010dasto i na p\u00e1s, kter\u00fd m\u011bl b\u00fdt prvn\u00ed. Fail nen\u00ed \u201en\u00e1t\u011br je v\u017edy \u0161patn\u00fd\u201c. Fail je n\u00e1t\u011br zvolen\u00fd jako levn\u011bj\u0161\u00ed n\u00e1hrada p\u00e1su na podklad, kter\u00fd n\u00e1t\u011br neunese \u2014 bez penetrace, bez vysu\u0161en\u00ed, bez odstran\u011bn\u00ed nesoudr\u017en\u00fdch \u010d\u00e1st\u00ed, bez \u0159e\u0161en\u00ed sp\u00e1du k vpusti.<\/p>\n<p>Z X je\u0161t\u011b nevypl\u00fdv\u00e1 Y. Vypl\u00fdv\u00e1 z toho jen Z. Z mokr\u00e9 skvrny na strop\u011b je\u0161t\u011b nevypl\u00fdv\u00e1, \u017ee je t\u0159eba vym\u011bnit celou tepelnou izolaci. Vypl\u00fdv\u00e1 z toho jen to, \u017ee je t\u0159eba naj\u00edt cestu vody a opravit hydroizola\u010dn\u00ed vrstvu nebo detail.<\/p>\n<h2>P\u00e1s a n\u00e1t\u011br nejsou vz\u00e1jemn\u011b zam\u011bniteln\u00e9 \u201etlou\u0161\u0165ky\u201c<\/h2>\n<p><strong>P\u00e1s<\/strong> (asfaltov\u00fd nataviteln\u00fd \/ samolepic\u00ed, nebo syntetick\u00e1 f\u00f3liov\u00e1 membr\u00e1na) tvo\u0159\u00ed celoplo\u0161nou vrstvu s definovanou tlou\u0161\u0165kou a spoji. Hod\u00ed se na velk\u00e9 plochy ploch\u00fdch st\u0159ech a teras, kde pot\u0159ebujete spoje a prostupy d\u011blat podle syst\u00e9mu.<\/p>\n<p><strong>N\u00e1t\u011br \/ st\u011brka<\/strong> (tekut\u00e1 izolace) se nan\u00e1\u0161\u00ed na p\u0159ipraven\u00fd podklad, vypl\u0148uje nepravidelnosti a \u010dasto pat\u0159\u00ed do detail\u016f, mokr\u00fdch prostor nebo oprav, kde p\u00e1s t\u011b\u017eko kop\u00edruje tvar. Spot\u0159eba na m\u00b2 a po\u010det vrstev ur\u010duje v\u00fdrobce \u2014 ne odhad \u201ep\u0159et\u0159ou to jednou\u201c.<\/p>\n<p>U asfaltov\u00e9ho p\u00e1su BITUELAST uv\u00e1d\u00ed <a href=\"https:\/\/www.bitumat.sk\/storage\/products\/2\/documents\/bituelast_612cc65496fab.pdf\" rel=\"noopener noreferrer\">technick\u00fd list BITUELAST<\/a> tlou\u0161\u0165ku <strong>3,5 \u00b1 0,2 mm<\/strong>, pod\u00e9ln\u00e9 i p\u0159\u00ed\u010dn\u00e9 p\u0159esahy <strong>100 mm (minimum 80 mm)<\/strong> a minim\u00e1ln\u00ed teplotu vzduchu i p\u00e1su p\u0159i zpracov\u00e1n\u00ed <strong>+5 \u00b0C<\/strong>.<\/p>\n<p>Praktick\u00e9 d\u011blen\u00ed pro hydroizolace:<\/p>\n<ul>\n<li><strong>P\u00e1s<\/strong> \u2014 velk\u00e1 plocha st\u0159echy \/ terasy \/ spodn\u00ed stavba podle projektu; spoje a prostupy d\u011bl\u00e1 vy\u0161kolen\u00fd pracovn\u00edk.<\/li>\n<li><strong>N\u00e1t\u011br \/ st\u011brka<\/strong> \u2014 detaily, koupelny, lok\u00e1ln\u00ed opravy p\u0159i spr\u00e1vn\u00e9m podkladu; penetrace a vrstvy podle technick\u00e9ho listu.<\/li>\n<li><strong>Kombinace<\/strong> \u2014 p\u00e1s na plo\u0161e a st\u011brka v detailu, pokud to syst\u00e9m dovol\u00ed.<\/li>\n<\/ul>\n<p>Nepou\u017e\u00edvejte \u201enejlevn\u011bj\u0161\u00ed n\u00e1t\u011br\u201c na m\u00edsto, kde projekt nebo stav podkladu p\u0159edepisuje p\u00e1s (nebo naopak). Dodavatel jako <a href=\"https:\/\/bitumat.sk\/\" rel=\"nofollow\">Bitumat<\/a> m\u00e1 p\u00e1sy, membr\u00e1ny i tekut\u00e9 izolace \u2014 ptejte se na konkr\u00e9tn\u00ed v\u00fdrobek ke skladb\u011b, ne na obecn\u00fd \u201easfalt\u201c.<\/p>\n<h2>Pro\u010d \u0161patn\u00fd podklad zab\u00edj\u00ed pr\u00e1v\u011b lacn\u011bj\u0161\u00ed n\u00e1t\u011br<\/h2>\n<p>N\u00e1t\u011br dr\u017e\u00ed na tom, na co se nalep\u00ed. Mastnota, prach, vlhkost, nestabiln\u00ed star\u00fd n\u00e1t\u011br a ostr\u00e9 hrany bez zaoblen\u00ed vytv\u00e1\u0159ej\u00ed m\u00edsta, kde film ztrat\u00ed p\u0159ilnavost jako prvn\u00ed. P\u00e1s se spr\u00e1vn\u00fdm spojov\u00e1n\u00edm (nataven\u00ed, lepen\u00ed, sva\u0159ov\u00e1n\u00ed) a kompatibilitou s existuj\u00edc\u00ed vrstvou \u0159e\u0161\u00ed plochu jinak \u2014 ale i p\u00e1s na mokr\u00e9m nebo \u0161pinav\u00e9m podkladu sel\u017ee. Rozd\u00edl je, \u017ee \u201elacn\u011bj\u0161\u00ed n\u00e1t\u011br jako zkratka\u201c \u010dasto vynech\u00e1 pr\u00e1v\u011b p\u0159\u00edpravu, kterou v\u00fdrobce vy\u017eaduje.<\/p>\n<p>P\u0159ed prac\u00ed na ploch\u00e9 st\u0159e\u0161e zkontrolujte:<\/p>\n<ol>\n<li>Kde m\u00e1 hydroizolace le\u017eet ve skladb\u011b (nad\/pod tepelnou izolac\u00ed podle projektu).<\/li>\n<li>Podklad \u2014 such\u00fd, soudr\u017en\u00fd, bez ostr\u00fdch hran; star\u00e9 nestabiln\u00ed vrstvy dol\u016f.<\/li>\n<li>Sp\u00e1dy a odvodn\u011bn\u00ed k vpusti \u2014 izolace bez sp\u00e1du vodu jen \u201edr\u017e\u00ed\u201c, dokud ji detail nepropust\u00ed.<\/li>\n<li>Prostupy, atiky, dilata\u010dn\u00ed sp\u00e1ry \u2014 voda jde p\u0159es detail \u010dast\u011bji ne\u017e p\u0159es st\u0159ed plochy.<\/li>\n<li>Ochrana vrstvy p\u0159ed mechanick\u00fdm po\u0161kozen\u00edm p\u0159ed zakryt\u00edm.<\/li>\n<li>Novostavba vs. sanace \u2014 p\u0159i sanaci nejprve p\u0159\u00ed\u010dina vlhkosti, ne p\u0159et\u00edr\u00e1n\u00ed skvrny.<\/li>\n<\/ol>\n<p>P\u0159i n\u00e1t\u011brech sledujte penetraci a spot\u0159ebu. P\u0159i p\u00e1sech kompatibilitu s existuj\u00edc\u00ed vrstvou p\u0159i oprav\u00e1ch. M\u00edch\u00e1n\u00ed syst\u00e9m\u016f bez ov\u011b\u0159en\u00ed \u010dasto kon\u010d\u00ed odlupov\u00e1n\u00edm, ne \u00fasporou.<\/p>\n<h2>Jak \u010d\u00edst nab\u00eddku, abyste nekoupili fail znovu<\/h2>\n<p>V dokumentaci hledejte: typ (asfaltov\u00fd p\u00e1s, PVC\/TPO, st\u011brka), nosnou vlo\u017eku, tlou\u0161\u0165ku, zp\u016fsob aplikace, ur\u010den\u00ed (st\u0159echa, spodn\u00ed stavba, interi\u00e9r). Pokud nab\u00eddka \u0159\u00edk\u00e1 jen \u201ehydroizolace\u201c, \u017e\u00e1dejte n\u00e1zev v\u00fdrobku a technick\u00fd list.<\/p>\n<p>P\u0159i aplikaci: p\u00e1s \u2014 p\u0159ekryt\u00ed spoj\u016f a napojen\u00ed na prostupy; n\u00e1t\u011br \u2014 spot\u0159eba, po\u010det vrstev, teplota a po\u010das\u00ed; po pr\u00e1ci \u2014 kontrola detail\u016f p\u0159ed zakryt\u00edm dla\u017ebou, z\u00e1sypem nebo dal\u0161\u00ed vrstvou. Oprava po zakryt\u00ed je dra\u017e\u0161\u00ed ne\u017e kontrola na otev\u0159en\u00e9 plo\u0161e.<\/p>\n<p>Nep\u0159esouvejte volbu typu na \u201emistra na stavb\u011b\u201c bez projektu nebo listu. Mistr aplikuje; typ m\u00e1 sed\u011bt na vodu a na podklad. P\u0159i dod\u00e1vce m\u011bjte rezervu na spoje \u2014 doch\u00e1zej\u00edc\u00ed materi\u00e1l l\u00e1k\u00e1 k n\u00e1hrad\u00e1m mimo syst\u00e9m.<\/p>\n<h2>Kdy sta\u010d\u00ed materi\u00e1l a kdy volat technika<\/h2>\n<p>Lok\u00e1ln\u00ed detail se st\u011brkou na \u010dist\u00e9m, kompatibiln\u00edm podkladu m\u016f\u017ee zvl\u00e1dnout zku\u0161en\u00fd t\u00fdm s technick\u00fdm listem. Cel\u00e1 ploch\u00e1 st\u0159echa, sanace po faili v\u00fd\u0161e, nebo nejasn\u00e1 cesta vody (shora \/ z boku \/ zdola) chce diagnostiku p\u0159ed n\u00e1kupem cel\u00e9ho bal\u00edku. Nejd\u0159\u00edv kde voda vstupuje, potom p\u00e1s nebo n\u00e1t\u011br, potom detail. Hydroizolace m\u00e1 b\u00fdt spojit\u00e1; chyba v detailu ji znehodnot\u00ed stejn\u011b jako \u0161patn\u00e1 volba typu na \u0161patn\u00fd podklad.<\/p>\n<p>Odd\u011blte v hlav\u011b: hydroizolace vs. tepeln\u00e1 izolace; p\u00e1s vs. n\u00e1t\u011br; novostavba vs. sanace. A\u017e potom objedn\u00e1v\u00e1te a a\u017e potom zakr\u00fdv\u00e1te skladbu.<\/p>\n<h2>Ploch\u00e9 st\u0159echy, terasy, z\u00e1klady \u2014 kde fail bol\u00ed nejv\u00edc<\/h2>\n<p>Typick\u00e1 m\u00edsta pro hydroizolaci: ploch\u00e1 st\u0159echa a terasa, z\u00e1klady a podzemn\u00ed \u010d\u00e1sti, koupelny a sprchy, n\u00e1dr\u017ee. U ploch\u00e9 st\u0159echy ov\u011b\u0159te sp\u00e1dy a odvodn\u011bn\u00ed d\u0159\u00edv, ne\u017e vyberete \u201elacn\u011bj\u0161\u00ed n\u00e1t\u011br\u201c. U z\u00e1klad\u016f \u0159e\u0161te i dren\u00e1\u017e a ochranu izolace \u2014 samotn\u00fd p\u00e1s nesta\u010d\u00ed, pokud voda stoj\u00ed u st\u011bny. V koupeln\u011b hydroizolace pod dla\u017ebou nen\u00ed voliteln\u00fd luxus; mus\u00ed b\u00fdt kontinu\u00e1ln\u00ed napojen\u00ed na vpust a st\u011bny podle v\u00fdrobce.<\/p>\n<p>P\u0159i pochybnosti o p\u0159\u00ed\u010din\u011b vlhkosti nejd\u0159\u00edv diagnostika (kde voda vstupuje: shora, z boku, zdola), potom materi\u00e1l. N\u00e1kup cel\u00e9ho bal\u00edku n\u00e1t\u011br\u016f p\u0159ed zji\u0161t\u011bn\u00edm p\u0159\u00ed\u010diny znamen\u00e1 skladov\u00e1n\u00ed a riziko \u0161patn\u00e9 volby \u2014 p\u0159esn\u011b jako ve faili s n\u00e1t\u011brem na \u0161patn\u00fd podklad.<\/p>\n<h2>Checklist chyb: lacn\u011bj\u0161\u00ed n\u00e1t\u011br na \u0161patn\u00fd podklad<\/h2>\n<ul>\n<li>Volba n\u00e1t\u011bru jen proto, \u017ee je levn\u011bj\u0161\u00ed ne\u017e p\u00e1s, bez kontroly soudr\u017enosti a vlhkosti podkladu.<\/li>\n<li>N\u00e1t\u011br bez penetrace a bez dodr\u017een\u00ed spot\u0159eby \/ po\u010dtu vrstev podle v\u00fdrobce.<\/li>\n<li>P\u0159esah spoje pod minimem v\u00fdrobce (u BITUELAST pod 80 mm, doporu\u010deno 100 mm).<\/li>\n<li>Aplikace p\u00e1su nebo n\u00e1t\u011bru pod +5 \u00b0C podle technick\u00e9ho listu, pokud list tuto hranici stanov\u00ed.<\/li>\n<li>Ignorov\u00e1n\u00ed sp\u00e1du a vpusti \u2014 voda stoj\u00ed na filmu a hled\u00e1 detail.<\/li>\n<li>Zakryt\u00ed vrstvy p\u0159ed kontrolou spoj\u016f a prostup\u016f.<\/li>\n<li>Sanace skvrny na strop\u011b bez nalezen\u00ed cesty vody (st\u0159echa vs. atika vs. sokl).<\/li>\n<li>M\u00edch\u00e1n\u00ed produkt\u016f r\u016fzn\u00fdch syst\u00e9m\u016f bez kompatibility.<\/li>\n<li>Zam\u011b\u0148ov\u00e1n\u00ed hydroizolace za tepelnou izolaci a \u201ezateplov\u00e1n\u00ed\u201c p\u0159es mokr\u00fd probl\u00e9m.<\/li>\n<li>N\u00e1kup materi\u00e1lu bez technick\u00e9ho listu a bez jasn\u00e9ho ur\u010den\u00ed (st\u0159echa vs. interi\u00e9r).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Na ploch\u00e9 st\u0159e\u0161e lacn\u011bj\u0161\u00ed n\u00e1t\u011br na \u0161patn\u00fd nebo nevhodn\u00fd podklad nespoj\u00ed \u201e\u00fasporu\u201c \u2014 typicky odlupov\u00e1n\u00ed, puch\u00fd\u0159e a n\u00e1vrat vody p\u0159es detail d\u0159\u00edv, ne\u017e by vydr\u017eel spr\u00e1vn\u011b zvolen\u00fd p\u00e1s ve skladb\u011b. Hydroizolace m\u00e1 zabr\u00e1nit vod\u011b v konstrukci. Tepeln\u00e1 izolace \u0159e\u0161\u00ed \u00fanik tepla. Nejsou synonyma. U ploch\u00fdch st\u0159ech, teras a z\u00e1klad\u016f rozhoduje typ materi\u00e1lu, podklad a detail [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":301,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[],"class_list":["post-302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-produkty"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Lacn\u011bj\u0161\u00ed n\u00e1t\u011br na mastn\u00fd podklad ploch\u00e9 st\u0159echy skon\u010d\u00ed odlupov\u00e1n\u00edm d\u0159\u00edv ne\u017e spr\u00e1vn\u011b zvolen\u00fd p\u00e1s - Garden Centrum<\/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:\/\/www.garden-centrum.cz\/blog\/lacnejsi-nater-na-mastny-podklad-ploche-strechy-skonci-odlupovanim\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lacn\u011bj\u0161\u00ed n\u00e1t\u011br na mastn\u00fd podklad ploch\u00e9 st\u0159echy skon\u010d\u00ed odlupov\u00e1n\u00edm d\u0159\u00edv ne\u017e spr\u00e1vn\u011b zvolen\u00fd p\u00e1s - Garden Centrum\" \/>\n<meta property=\"og:description\" content=\"Na ploch\u00e9 st\u0159e\u0161e lacn\u011bj\u0161\u00ed n\u00e1t\u011br na \u0161patn\u00fd nebo nevhodn\u00fd podklad nespoj\u00ed \u201e\u00fasporu\u201c \u2014 typicky odlupov\u00e1n\u00ed, puch\u00fd\u0159e a n\u00e1vrat vody p\u0159es detail d\u0159\u00edv, ne\u017e by vydr\u017eel spr\u00e1vn\u011b zvolen\u00fd p\u00e1s ve skladb\u011b. Hydroizolace m\u00e1 zabr\u00e1nit vod\u011b v konstrukci. Tepeln\u00e1 izolace \u0159e\u0161\u00ed \u00fanik tepla. Nejsou synonyma. 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