[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.chacha.cz\/caste-chyby-pri-zajisteni-izolace-strechy-obytneho-domu\/#Article","mainEntityOfPage":"https:\/\/www.chacha.cz\/caste-chyby-pri-zajisteni-izolace-strechy-obytneho-domu\/","headline":"\u010cast\u00e9 chyby p\u0159i zaji\u0161t\u011bn\u00ed izolace st\u0159echy obytn\u00e9ho domu","name":"\u010cast\u00e9 chyby p\u0159i zaji\u0161t\u011bn\u00ed izolace st\u0159echy obytn\u00e9ho domu","description":"V\u00a0zimn\u00edm obdob\u00ed unik\u00e1 skrze \u0161ikmou st\u0159echu domu p\u0159ibli\u017en\u011b p\u011btadvacet procent tepla. To proto, \u017ee tepl\u00fd vzduch stoup\u00e1 vzh\u016fru a nelze se tomuto fyzik\u00e1ln\u00edmu principu vyhnout. Dokonce i takov\u00fd pasivn\u00ed d\u016fm vykazuje tepeln\u00e9 ztr\u00e1ty skrze st\u0159e\u0161n\u00ed krytinu. Nejv\u011bt\u0161\u00ed objem ztr\u00e1t se t\u00fdk\u00e1 pochopiteln\u011b objekt\u016f, kter\u00e9 nemaj\u00ed st\u0159echy zateplen\u00e9 v\u016fbec, a pom\u011brn\u011b zna\u010dn\u00e9 ztr\u00e1ty tepla vznikaj\u00ed i […]","datePublished":"2025-11-27","dateModified":"2025-11-27","author":{"@type":"Person","@id":"https:\/\/www.chacha.cz\/author\/#Person","name":"","url":"https:\/\/www.chacha.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/56990d361a15c60249588fcd5c65556d1c39f993ac5e20b5abce42fd817b46e8?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/56990d361a15c60249588fcd5c65556d1c39f993ac5e20b5abce42fd817b46e8?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"chacha.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.chacha.cz\/wp-content\/uploads\/img_a312472_w2568_t1523384967.jpg","url":"https:\/\/www.chacha.cz\/wp-content\/uploads\/img_a312472_w2568_t1523384967.jpg","height":0,"width":0},"url":"https:\/\/www.chacha.cz\/caste-chyby-pri-zajisteni-izolace-strechy-obytneho-domu\/","wordCount":450,"articleBody":"V\u00a0zimn\u00edm obdob\u00ed unik\u00e1 skrze \u0161ikmou st\u0159echu domu p\u0159ibli\u017en\u011b p\u011btadvacet procent tepla. To proto, \u017ee tepl\u00fd vzduch stoup\u00e1 vzh\u016fru a nelze se tomuto fyzik\u00e1ln\u00edmu principu vyhnout. Dokonce i takov\u00fd pasivn\u00ed d\u016fm vykazuje tepeln\u00e9 ztr\u00e1ty skrze st\u0159e\u0161n\u00ed krytinu. Nejv\u011bt\u0161\u00ed objem ztr\u00e1t se t\u00fdk\u00e1 pochopiteln\u011b objekt\u016f, kter\u00e9 nemaj\u00ed st\u0159echy zateplen\u00e9 v\u016fbec, a pom\u011brn\u011b zna\u010dn\u00e9 ztr\u00e1ty tepla vznikaj\u00ed i tam, kde je tepeln\u00e1 izolace \u0161patn\u011b navr\u017eena. Tehdy jde o nevhodn\u011b zvolen\u00fd materi\u00e1l, jeho malou tlou\u0161\u0165ku, net\u011bsnosti ve sp\u00e1r\u00e1ch, zejm\u00e9na v\u00a0podom\u00e1cku vytv\u00e1\u0159en\u00fdch neodborn\u011b proveden\u00fdch konstrukc\u00edch.\tNa propustnosti izola\u010dn\u00ed vrstvy z\u00e1vis\u00ed \u00faspora tepeln\u00e9 energieB\u011b\u017en\u00e1 izolace st\u0159echy zpravidla za\u010d\u00edn\u00e1 na tlou\u0161\u0165ce 200 mm, optim\u00e1ln\u00ed tlou\u0161\u0165ka se ov\u0161em pohybuje v\u00a0rozmez\u00ed 260 \u2013 320 mm. U pasivn\u00edch a n\u00edzkoenergetick\u00fdch staveb se na s\u00edlu izolace klade d\u016fraz v\u011bt\u0161\u00ed, tam by m\u011bl b\u00fdt v\u00a0rozmez\u00ed od 350 do 400 mm. Na izola\u010dn\u00ed vrstv\u011b nem\u00e1 smysl \u0161et\u0159it, nehled\u011b na to, \u017ee samotn\u00e1 po\u0159izovac\u00ed cena materi\u00e1lu je velmi n\u00edzk\u00e1.Z\u00e1sadou je pokl\u00e1dat izola\u010dn\u00ed materi\u00e1l v\u017edy minim\u00e1ln\u011b ve dvou vrstv\u00e1ch. T\u00edm se p\u0159eru\u0161\u00ed tzv. tepeln\u00fd most. Jde o to, \u017ee d\u0159ev\u011bn\u00e9 krokve vedou teplo \u010dty\u0159ikr\u00e1t rychleji ne\u017e miner\u00e1ln\u00ed vata, n\u00e1sledn\u011b prochl\u00e1daj\u00ed, kondenzuje na jejich povrchu voda a mohou se tu tvo\u0159it pl\u00edsn\u011b. Vhodn\u00fdm \u0159e\u0161en\u00edm je tzv. nadkrokevn\u00ed zateplen\u00ed – t\u00edm je pokl\u00e1dka tuh\u00fdch hranol\u016f z\u00a0EPS, st\u0159\u00eddav\u011b s\u00a0m\u011bkkou miner\u00e1ln\u00ed vatou Isover.\tParoz\u00e1branu nepodce\u0148ujteVelmi z\u00e1le\u017e\u00ed na tom, jak kvalitn\u011b je polo\u017eena vrstva tzv. paroz\u00e1brany. Ta mus\u00ed b\u00fdt napnuta t\u011bsn\u011b pod obkladov\u00fdm materi\u00e1lem, tedy co nejbl\u00ed\u017ee sm\u011brem do interi\u00e9ru, a p\u0159edev\u0161\u00edm se nesm\u00ed nikde prorazit. Jednotliv\u00e9 pl\u00e1ty mus\u00ed b\u00fdt tak\u00e9 mezi sebou spojeny izola\u010dn\u00ed lepic\u00ed p\u00e1skou. Pokud je izolace p\u0159\u00edli\u0161 daleko od s\u00e1drokartonu, nepln\u00ed svou funkci a vzdu\u0161n\u00e1 vlhkost se tu bude mezi s\u00e1drokartonem a paroz\u00e1branou sr\u00e1\u017eet.\u00a0V\u00a0sou\u010dasn\u00e9 dob\u011b je na trhu unik\u00e1tn\u00ed paroz\u00e1brana Isover Vario, kter\u00e1 \u010d\u00e1ste\u010dn\u011b propou\u0161t\u00ed vlhkost do interi\u00e9ru a d\u00e1v\u00e1 j\u00ed tak mo\u017enost vysychat. Tato f\u00f3lie je vhodn\u00e1 zejm\u00e9na tam, kde je \u010dlenit\u00fd povrch pod krytinou, a kde m\u016f\u017ee doj\u00edt k\u00a0r\u016fzn\u00fdm chyb\u00e1m p\u0159i pokl\u00e1dce paroz\u00e1brany. Z\u00e1rove\u0148 je Vario jakousi jistotou oproti b\u011b\u017en\u00e9 izola\u010dn\u00ed f\u00f3lii.                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"\u010cast\u00e9 chyby p\u0159i zaji\u0161t\u011bn\u00ed izolace st\u0159echy obytn\u00e9ho domu","item":"https:\/\/www.chacha.cz\/caste-chyby-pri-zajisteni-izolace-strechy-obytneho-domu\/#breadcrumbitem"}]}]