{"id":32376,"date":"2025-11-03T18:20:02","date_gmt":"2025-11-03T17:20:02","guid":{"rendered":"https:\/\/www.cedera-okna.sk\/sk\/?p=32376"},"modified":"2025-11-04T18:00:50","modified_gmt":"2025-11-04T17:00:50","slug":"sucinitel-prestupu-tepla-oknom-uw","status":"publish","type":"post","link":"https:\/\/www.cedera-okna.sk\/sk\/sucinitel-prestupu-tepla-oknom-uw\/","title":{"rendered":"S\u00fa\u010dinite\u013e prestupu tepla oknom (Uw): \u010do to je a pre\u010do to rie\u0161i\u0165 pred v\u00fdmenou okien"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Pre\u010do je index Uw d\u00f4le\u017eit\u00fd<\/h2>\n<p>Ak pl\u00e1nujete v\u00fdmenu okien, rekon\u0161trukciu alebo v\u00fdstavbu, jedn\u00fdm z k\u013e\u00fa\u010dov\u00fdch parametrov, na ktor\u00fd treba dba\u0165, je <b>s\u00fa\u010dinite\u013e prestupu tepla (Uw)<\/b>. T\u00e1to hodnota priamo ovplyv\u0148uje tepeln\u00fd komfort, v\u00fd\u0161ku \u00fa\u010dtov za k\u00farenie a \u010dasto aj n\u00e1rok na dot\u00e1ciu (program <i>Obnov dom<\/i>).<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-8616 size-large\" src=\"https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-1024x687.jpg\" alt=\"Pas\u00edvne stavba - okn\u00e1\" width=\"1024\" height=\"687\" srcset=\"https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-1024x687.jpg 1024w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-300x201.jpg 300w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-768x516.jpg 768w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-1536x1031.jpg 1536w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-2048x1375.jpg 2048w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-870x584.jpg 870w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-390x262.jpg 390w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2020\/04\/pasivni-stavba-okna-1170x785.jpg 1170w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>\u010co presne znamen\u00e1 Uw?<\/h2>\n<p>Uv\u00e1dzan\u00e9 p\u00edsmenom <strong>U<\/strong> (z angl. thermal transmittance) vyjadruje, ko\u013eko tepelnej energie prejde cez 1 m\u00b2 plochy pri rozdiele tepl\u00f4t 1 K. Jednotka je <strong>W\/m\u00b2K<\/strong>. <strong>N\u00edzk\u00e1 hodnota Uw = lep\u0161ia izol\u00e1cia.<\/strong><\/p>\n<p>Pri okn\u00e1ch sa stret\u00e1vame s tromi d\u00f4le\u017eit\u00fdmi hodnotami:<\/p>\n<ul>\n<li><b>Ug<\/b> \u2013 U hodnoty samotn\u00e9ho skla (glass),<\/li>\n<li><b>Uf<\/b> \u2013 U hodnoty r\u00e1mu (frame),<\/li>\n<li><b>Uw<\/b> \u2013 v\u00fdsledn\u00e1 U hodnota cel\u00e9ho okna (window), ktor\u00e1 zoh\u013ead\u0148uje r\u00e1m, sklo, di\u0161tan\u010dn\u00fd r\u00e1mik a mont\u00e1\u017ene vplyvy.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Ak\u00e9 Uw hodnoty s\u00fa vhodn\u00e9?<\/h2>\n<table>\n<tbody>\n<tr>\n<td><strong>Typ budovy<\/strong><\/td>\n<td><strong>Odpor\u00fa\u010dan\u00e1 hodnota Uw<\/strong><\/td>\n<td><strong>Pozn\u00e1mka<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Star\u0161\u00ed dom (rekon\u0161trukcia)<\/td>\n<td>do 1,3 W\/m\u00b2K<\/td>\n<td>V\u00fdrazn\u00e9 zlep\u0161enie oproti star\u00fdm okn\u00e1m<\/td>\n<\/tr>\n<tr>\n<td>Novostavba (n\u00edzkoenergetick\u00e1)<\/td>\n<td>do 1,0 W\/m\u00b2K<\/td>\n<td>\u0160tandard modernej v\u00fdstavby<\/td>\n<\/tr>\n<tr>\n<td>Pas\u00edvny dom<\/td>\n<td>\u2264 0,8 W\/m\u00b2K<\/td>\n<td>Najvy\u0161\u0161\u00ed energetick\u00fd \u0161tandard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><strong>Pre predstavu:<\/strong> star\u00e9 dvojit\u00e9 skl\u00e1 z 90. rokov \u010dasto dosahuj\u00fa <em>Uw \u2248 2,5\u20133,0 W\/m\u00b2K<\/em>, modern\u00e9 okn\u00e1 s trojsklom maj\u00fa <em>Uw \u2248 0,8\u20131,0 W\/m\u00b2K<\/em>. Rozdiely v Uw ved\u00fa k re\u00e1lnym \u00faspor\u00e1m na vykurovan\u00ed.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Uw a dot\u00e1cie (Obnov dom)<\/h2>\n<p>Pri \u017eiadostiach o dot\u00e1ciu b\u00fdva v podmienkach uveden\u00e9, ak\u00e9 minim\u00e1lne parametre musia okn\u00e1 sp\u013a\u0148a\u0165. Pre mnoh\u00e9 typy projektov sa po\u017eaduje <strong>Uw \u2264 1,0 W\/m\u00b2K<\/strong><\/p>\n<p>Hodnota Uw mus\u00ed by\u0165 deklarovan\u00e1 v technickom liste alebo certifik\u00e1te. Iba dokumentovan\u00e9 hodnoty s\u00fa vhodn\u00e9 pre schva\u013eovanie dot\u00e1ci\u00ed.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-11108 size-large\" src=\"https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-1024x768.jpg\" alt=\"Realiz\u00e1cia franc\u00fazskych okien\" width=\"1024\" height=\"768\" srcset=\"https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-1024x768.jpg 1024w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-300x225.jpg 300w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-768x576.jpg 768w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-1536x1152.jpg 1536w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-2048x1536.jpg 2048w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-870x653.jpg 870w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-390x293.jpg 390w, https:\/\/www.cedera-okna.sk\/wp-content\/uploads\/2022\/05\/realizacia-hlinikovych-okien-1170x878.jpg 1170w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Faktory, ktor\u00e9 ovplyv\u0148uj\u00fa Uw<\/h2>\n<p>Pri v\u00fdpo\u010dte Uw sa zoh\u013ead\u0148uj\u00fa:<\/p>\n<ul>\n<li>konfigur\u00e1cia skla (dvojsklo vs trojsklo),<\/li>\n<li>typ a kon\u0161trukcia r\u00e1mu (viac-komorov\u00fd profil, materi\u00e1l),<\/li>\n<li>di\u0161tan\u010dn\u00fd r\u00e1mik medzi sklami (tepl\u00fd vs studen\u00fd),<\/li>\n<li>tesnenia a spojenia r\u00e1mu so sklom,<\/li>\n<li>kvalita mont\u00e1\u017ee a zateplenia okenn\u00e9ho otvoru.<\/li>\n<\/ul>\n<p>Kone\u010dn\u00e1 Uw hodnota z\u00e1vis\u00ed od celkovej s\u00fastavy okna &#8211; preto je k\u013e\u00fa\u010dov\u00e9 porovn\u00e1va\u0165 <i>Uw<\/i>, nie len <em>Ug<\/em>.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Praktick\u00e9 odpor\u00fa\u010dania pri v\u00fdbere okien<\/h2>\n<ol>\n<li><b>Zauj\u00edmajte sa o v\u00fdsledn\u00fd parameter Uw<\/b> (nie len Ug). Parameter je s\u00fa\u010das\u0165ou technick\u00e9ho listu. Pokia\u013e nebudete nie\u010domu rozumie\u0165, na\u0161i kolegovia v\u00e1m radi pom\u00f4\u017eu.<\/li>\n<li><b>Zva\u017eujte trojsklo<\/b> &#8211; hoci je drah\u0161ie, \u010dasto sa invest\u00edcia vr\u00e1ti ni\u017e\u0161\u00edmi \u00fa\u010dtami za k\u00farenie.<\/li>\n<li><b>Dbajte na mont\u00e1\u017e<\/b> &#8211; aj najlep\u0161ie okno str\u00e1ca vlastnosti pri nespr\u00e1vnej mont\u00e1\u017ei. U n\u00e1s m\u00f4\u017eete o\u010dak\u00e1va\u0165 profesion\u00e1lnu mont\u00e1\u017e podlo\u017een\u00fa stovkami \u00faspe\u0161n\u00fdch realiz\u00e1ci\u00ed.<\/li>\n<li><b>Porovnajte certifik\u00e1ty<\/b> z akreditovan\u00fdch sk\u00fa\u0161obn\u00ed (napr. IFT alebo in\u00fd autorizovan\u00fd org\u00e1n).<\/li>\n<\/ol>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky (FAQ)<\/h2>\n<p><section><summary><h3 >\u010co je lep\u0161ie - trojsklo alebo dvojsklo?<\/h3><\/summary><div><div class=\"saswp_faq_tiny_content\">Trojsklo m\u00e1 ni\u017e\u0161ie Ug a \u010dasto vedie k ni\u017e\u0161iemu Uw cel\u00e9ho okna. Pre novostavby a projekty s po\u017eiadavkami na dot\u00e1ciu je \u010dasto preferovan\u00e9 trojsklo.<\/div><\/div><\/section><section><summary><h3 >Ovplyvn\u00ed mont\u00e1\u017e hodnotu Uw?<\/h3><\/summary><div><div class=\"saswp_faq_tiny_content\">\u00c1no. Ak je okno nespr\u00e1vne osaden\u00e9 alebo nie je spr\u00e1vne zateplen\u00e9 okolo r\u00e1mu, re\u00e1lna tepelnoizola\u010dn\u00e1 schopnos\u0165 bude ni\u017e\u0161ia ako deklarovan\u00e1.<\/div><\/div><\/section><section><summary><h3 >Mus\u00edm ma\u0165 Uw v technickom liste pri \u017eiadosti o dot\u00e1ciu?<\/h3><\/summary><div><div class=\"saswp_faq_tiny_content\">V\u00e4\u010d\u0161inou \u00e1no - administr\u00e1tori projektov po\u017eaduj\u00fa ofici\u00e1lne deklarovan\u00e9 parametre. Pred podan\u00edm \u017eiadosti o dot\u00e1ciu odpor\u00fa\u010dame preveri\u0165 presn\u00e9 podmienky v\u00fdzvy alebo sa poradi\u0165 s na\u0161imi \u0161pecialistami.<\/div><\/div><\/section>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2 style=\"text-align: center;\">Rie\u0161ite v\u00fdmenu okien a mo\u017enosti dot\u00e1cie?<br \/>\nNev\u00e1hajte n\u00e1s kontaktova\u0165, porad\u00edme v\u00e1m.<\/h2>\n<p>[\/vc_column_text]\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f2486-o1\" lang=\"sk-SK\" dir=\"ltr\" data-wpcf7-id=\"2486\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/sk\/wp-json\/wp\/v2\/posts\/32376#wpcf7-f2486-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Kontaktn\u00fd formul\u00e1r\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"2486\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.5\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"sk_SK\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f2486-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_wpcf7_recaptcha_response\" value=\"\" \/>\n<\/fieldset>\n<p><label><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Meno*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span> <\/label>\n<\/p>\n<div class=\"sc_form_info columns_wrap\">\n\t<div class=\"sc_form_item sc_form_field label_over column-1_2\">\n\t\t<p><label><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"your-telefon\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Telef\u00f3n*\" value=\"\" type=\"tel\" name=\"your-telefon\" \/><\/span> <\/label>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"sc_form_item sc_form_field label_over column-1_2 pading0\">\n\t\t<p><label><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"E-mail*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span><\/label>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<p><label><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Pros\u00edm kontaktujte ma oh\u013eadom...\" name=\"your-message\"><\/textarea><\/span> <\/label>\n<\/p>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"checkbox-597\"><span class=\"wpcf7-form-control wpcf7-checkbox wpcf7-validates-as-required\"><span class=\"wpcf7-list-item first last\"><input type=\"checkbox\" name=\"checkbox-597[]\" value=\"S\u00fahlas\u00edm so zpracovan\u00edm osobn\u00fdch \u00fadajov*\" \/><span class=\"wpcf7-list-item-label\">S\u00fahlas\u00edm so zpracovan\u00edm osobn\u00fdch \u00fadajov*<\/span><\/span><\/span><\/span>\n<\/p>\n<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Posla\u0165 po\u017eiadavku\" \/>\n<\/p>\n<p>*polo\u017eka je povinn\u00e1\n<\/p><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;] Pre\u010do je index Uw d\u00f4le\u017eit\u00fd Ak pl\u00e1nujete v\u00fdmenu okien, rekon\u0161trukciu alebo v\u00fdstavbu, jedn\u00fdm z k\u013e\u00fa\u010dov\u00fdch parametrov, na ktor\u00fd treba dba\u0165, je s\u00fa\u010dinite\u013e prestupu tepla (Uw). T\u00e1to hodnota priamo ovplyv\u0148uje tepeln\u00fd komfort, v\u00fd\u0161ku \u00fa\u010dtov za k\u00farenie a \u010dasto aj n\u00e1rok na dot\u00e1ciu (program Obnov dom). [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=&#8221;&#8221;] \u010co presne znamen\u00e1 Uw? Uv\u00e1dzan\u00e9 p\u00edsmenom U [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-32376","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>S\u00fa\u010dinite\u013e prestupu tepla oknom (Uw) - s\u00favislos\u0165 s dot\u00e1ciou Obnov dom | Cedera<\/title>\n<meta name=\"description\" content=\"\u010co je s\u00fa\u010dinite\u013e prestupu tepla (Uw), ako sa meria, ak\u00e9 hodnoty s\u00fa ide\u00e1lne pre novostavby a dot\u00e1cie Obnov dom a ako vybra\u0165 okno s najlep\u0161ou tepelnou izol\u00e1ciou.\" \/>\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.cedera-okna.sk\/sk\/sucinitel-prestupu-tepla-oknom-uw\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u00fa\u010dinite\u013e prestupu tepla oknom (Uw) - 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