{"id":4695,"date":"2026-01-06T11:15:00","date_gmt":"2026-01-06T11:15:00","guid":{"rendered":"https:\/\/knaufpartner.pl\/?post_type=product&#038;p=4695"},"modified":"2026-08-11T08:02:14","modified_gmt":"2026-08-11T06:02:14","slug":"knauf-k4-zelowy","status":"publish","type":"product","link":"https:\/\/sklep.pkcomplex.pl\/en\/product\/knauf-k4-zelowy\/","title":{"rendered":"KNAUF K4 GEL"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Knauf K4 Gel is a modern tile adhesive developed using innovative gel technology. Its formula, containing active gelling silicate, ensures exceptional adhesion and ease of application, whilst the product itself offers increased flexibility. You can use it on difficult, flexible substrates such as OSB boards, old tiles, underfloor heating substrates or waterproofed surfaces. Thanks to its S1 classification, it is able to compensate for minor movements and vibrations in the substrate without the risk of the tiles coming loose.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Knauf K4 gel tile adhesive can be applied in a layer between 2 and 15 mm thick, allowing minor surface irregularities to be levelled out. The product has zero sag \u2013 it can be used to install tiles on walls, even from above. It is recommended for both professional construction applications and DIY finishing work at home. Order Knauf K4 adhesive now at a price that matches its quality!<\/span><\/p>\n<h2><span style=\"font-weight: 400\">C2TES1 Flexible Tile Adhesive<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Innovative, gel-based<\/span><span style=\"font-weight: 400\"> recipe,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">adhesive for large-format tiles (maximum size: over 150 cm \u00d7 150 cm),<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">any consistency (standard, liquid, semi-liquid),<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">highly elastic, deformable,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">easy<\/span><span style=\"font-weight: 400\"> in preparation (no lumps),<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">none<\/span><span style=\"font-weight: 400\"> the effect of the tile being pulled in during bonding,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">for difficult substrates: plasterboard, gypsum boards, cement boards, waterproofing, underfloor heating,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">for indoor and outdoor use.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Features:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">easy to apply, stable and convenient to use,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">multi-function (3 water settings) <\/span><span style=\"font-weight: 400\">(earnings-related),<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">layer thickness<\/span><span style=\"font-weight: 400\"> 2\u201315 mm,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">for porcelain stoneware, clinker and concrete tiles<\/span><span style=\"font-weight: 400\"> etc.,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">on cement-based and gypsum-based substrates, plasterboard, boards<\/span><span style=\"font-weight: 400\"> OSB,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">for waterproofing, underfloor heating,<\/span><span style=\"font-weight: 400\"> wall-mounted,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">outdoors: stairs, balconies,<\/span><span style=\"font-weight: 400\"> terraces,<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">for difficult substrates, such as tile-to-tile, etc.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Knauf K4 Adhesive. Universal use<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Knauf K4 adhesive is suitable for a wide range of applications, both indoors and outdoors. It can be used on balconies, terraces, fa\u00e7ades, in bathrooms, kitchens and on external staircases \u2013 as the product has been designed for bonding all types of tiles: porcelain, clinker, ceramic and non-staining natural stone. It performs excellently with large-format tiles on both floors and walls. Indoors, it can be used to lay tiles larger than 150 \u00d7 150 cm, whilst outdoors, sizes up to 90 \u00d7 90 cm are recommended. The adhesive is fully frost-resistant and waterproof, making it resistant to rain, snow and damp.<\/span><\/p>\n<p><span style=\"font-weight: 400\">The product can be used, amongst other things, in residential and industrial construction, garages, commercial and retail premises, offices, public buildings, healthcare facilities, nurseries, pre-schools and schools<span style=\"font-weight: 400\"> and other places.<\/span><\/span><\/p>\n<p><!-- pkc-yt-embed:jDj3lNM9PJw --><\/p>\n<div class=\"pkc-yt-embed wp-block-embed is-type-video is-provider-youtube\">\n<div class=\"wp-block-embed__wrapper\"><iframe loading=\"lazy\" title=\"YouTube video\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/jDj3lNM9PJw\" frameborder=\"0\" allowfullscreen allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\"><\/iframe><\/div>\n<\/div>\n<p><!-- pkc-yt-embed:lxGtvWRQQBY --><\/p>\n<div class=\"pkc-yt-embed wp-block-embed is-type-video is-provider-youtube\">\n<div class=\"wp-block-embed__wrapper\"><iframe loading=\"lazy\" title=\"YouTube video\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/lxGtvWRQQBY\" frameborder=\"0\" allowfullscreen allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\"><\/iframe><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<div class=\"nag\">\n<div class=\"nag\">\n<div class=\"nag\">\n<div class=\"nag\">C2TES1 flexible tile adhesive, an innovative gel formula\u2026<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"featured_media":4762,"template":"","meta":[],"product_brand":[],"product_cat":[307,359],"product_tag":[],"class_list":["post-4695","product","type-product","status-publish","has-post-thumbnail","product_cat-systemy-glazurnicze","product_cat-kleje-do-glazury","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product\/4695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":4,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product\/4695\/revisions"}],"predecessor-version":[{"id":9605,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product\/4695\/revisions\/9605"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/media\/4762"}],"wp:attachment":[{"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/media?parent=4695"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product_brand?post=4695"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product_cat?post=4695"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/sklep.pkcomplex.pl\/en\/wp-json\/wp\/v2\/product_tag?post=4695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}