{"product_id":"kerakoll-h40-gel","title":"Kerakoll H40 Gel flexible tile adhesive","description":"\u003cp\u003eDoes the tile sound hollow after laying? The adhesive did not penetrate the back — voids remained, the tile loosens. It does not slip on walls, spreads on floors. No voids, no cracks, no flaking. This is Kerakoll H40 Gel.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMade in Italy.\u003c\/b\u003e Kerakoll, Sassuolo — building material innovation since 1968. H40 Gel is the successor to Biogel No Limits, the central product of the renewed H40 tile adhesive line.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge format (up to 160x320 cm):\u003c\/strong\u003e no hollow sounds, no cracks — thixotropic \u0026 liquid mix, full bedding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderfloor heating:\u003c\/strong\u003e adhesion does not break — S1 deformability, -40 °C – +90 °C heat resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame for wall and floor:\u003c\/strong\u003e no need to change bags — less water for walls, more for floors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGres, ceramic, stone, mosaic, glass:\u003c\/strong\u003e no product mistakes — one tile adhesive for everything\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrace, pool, facade:\u003c\/strong\u003e does not flake after frost — adheres underwater and after freeze-thaw cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 minutes open time:\u003c\/strong\u003e no rush with large tiles — stress-free double application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for indoor use:\u003c\/strong\u003e EC1 Plus — very low VOC emissions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuccessor to Biogel No Limits:\u003c\/strong\u003e same category, updated formula\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct family\u003c\/th\u003e\n\u003ctd\u003eH40 tile adhesive line (Gel + Advanced + Tech + Extreme)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eStructural gel tile adhesive (one-component, cement-based)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eC2 TE S1 (EN 12004), GT-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial consumption\u003c\/th\u003e\n\u003ctd\u003e≈ 1.25 kg\/m²\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLayer thickness\u003c\/th\u003e\n\u003ctd\u003e2–15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpen time\u003c\/th\u003e\n\u003ctd\u003e≥ 60 minutes (+23 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePot life\u003c\/th\u003e\n\u003ctd\u003e≈ 4 hours (+23 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWalkable \/ grouting time\u003c\/th\u003e\n\u003ctd\u003e≈ 24 hours (+23 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeat resistance\u003c\/th\u003e\n\u003ctd\u003e−40 °C – +90 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003e25 kg bag, grey or white\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003e≈ 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eWhat is it suitable for?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eTiling materials:\u003c\/strong\u003e Gres tiles in all sizes — from 30x30 cm tiles up to 160x320 cm large format slabs. Thin and fabric-reinforced laminated panels. Ceramic, marble, natural stone, glass mosaic, terracotta, clinker, thermal and acoustic insulation panels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSubstrates:\u003c\/strong\u003e Cement screed, concrete, cement-based self-leveling compound (\u003ca href=\"\/en\/products\/kerakoll-planogel-ultra\"\u003ePlanogel Ultra\u003c\/a\u003e). Drywall, fiber-reinforced cement board. Lime and cement plaster, brick, aerated concrete. Waterproofing layer (\u003ca href=\"\/en\/products\/kerakoll-aquastop-nanoflex\"\u003eAquastop Nanoflex\u003c\/a\u003e, \u003ca href=\"\/en\/products\/kerakoll-aquastop-green\"\u003eAquastop Green\u003c\/a\u003e, \u003ca href=\"\/en\/products\/kerakoll-nanodefense-eco\"\u003eNanodefense Eco\u003c\/a\u003e). Existing, fixed, intact covering. Underfloor heating (water-based, electric, heat-distributing plate, grooved systems).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAfter priming:\u003c\/strong\u003e Gypsum, anhydrite, wood, metal, PVC — \u003ca href=\"\/en\/products\/kerakoll-active-prime-fix\"\u003eActive Prime Fix\u003c\/a\u003e or \u003ca href=\"\/en\/products\/kerakoll-active-prime-grip\"\u003eActive Prime Grip\u003c\/a\u003e, indoor use only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpaces:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential: apartment, bathroom, kitchen, terrace, balcony\u003c\/li\u003e\n\u003cli\u003eCommercial: restaurant, hotel, shop, office, waiting room\u003c\/li\u003e\n\u003cli\u003eIndustrial: hall, warehouse, factory\u003c\/li\u003e\n\u003cli\u003eSpecial: pool (≈ 14 days waiting before filling), sauna, wellness, facade, street furniture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate unevenness over 15 mm — first use self-leveling (\u003ca href=\"\/en\/products\/kerakoll-planogel-ultra\"\u003ePlanogel Ultra\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eFor reactive waterproof membrane (RM type, EN 14891) — \u003ca href=\"\/en\/products\/kerakoll-h40-extreme\"\u003eH40 Extreme\u003c\/a\u003e reactive tile adhesive is required\u003c\/li\u003e\n\u003cli\u003eDoes not replace waterproofing on outdoor water-exposed surfaces by itself\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDifferent task?\u003c\/strong\u003e Fast handover or cold season: \u003ca href=\"\/en\/products\/kerakoll-h40-advanced\"\u003eH40 Advanced\u003c\/a\u003e with accelerated adhesion. Moving substrate, facade, large slab reinforced with fabric: \u003ca href=\"\/en\/products\/kerakoll-h40-tech\"\u003eH40 Tech\u003c\/a\u003e ultra-flexible. Industrial kitchen, lab, chemical exposure: \u003ca href=\"\/en\/products\/kerakoll-h40-extreme\"\u003eH40 Extreme\u003c\/a\u003e hybrid reactive.\u003c\/p\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/MJEyicDWQ8U?si=UvegC0OVsKYD0Ibl\" title=\"YouTube video player\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;\"\u003e\n  \u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does a tile sound hollow after installation?\u003c\/strong\u003e \u003cbr\u003eThe tile adhesive did not fully saturate the back — voids remained underneath. With a thixotropic \u0026 fluid gel tile adhesive (e.g., Kerakoll H40 Gel), you get full bedding with no hollow spots.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich tile adhesive is suitable for large slabs?\u003c\/strong\u003e \u003cbr\u003eOne that fully saturates the back of the tile and has at least 60 minutes open time. Kerakoll H40 Gel delivers both — tested up to 160x320 cm large slabs with a thixotropic \u0026 fluid mix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a thixotropic \u0026 fluid mix, and why does it matter?\u003c\/strong\u003e \u003cbr\u003eThixotropic = tile does not slip on the wall. Fluid = spreads on the floor and fills voids under the tile. That’s why the same bag works for walls and floors — less water for walls, more for floors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many m² does a 25 kg bag of H40 Gel cover?\u003c\/strong\u003e \u003cbr\u003eMaterial requirement ≈ 1.25 kg \/ m² \/ mm layer thickness. A 25 kg bag covers ≈ 4-5 m² for small tiles (4-5 mm bedding), ≈ 2-2.5 m² for large slabs (8-10 mm, double application).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it replace Biogel No Limits?\u003c\/strong\u003e \u003cbr\u003eYes. H40 Gel is the same category, an updated formula as part of the renewed H40 product line.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich tile adhesive is suitable for underfloor heating?\u003c\/strong\u003e \u003cbr\u003eKerakoll H40 Gel is tested for all four common underfloor heating systems: wet, electric, heat-distributing plates, and milled. The S1 deformability and -40 °C to +90 °C temperature resistance withstand heating cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the C2 TE S1 class and GT-2 mean?\u003c\/strong\u003e \u003cbr\u003eC2 TE S1 is the EN 12004 certification — high adhesion, extended open time, deformable. GT is Kerakoll’s own system test for torsion and bending, GT-2 = medium-high deformability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the tile adhesive be applied on tiles?\u003c\/strong\u003e \u003cbr\u003eYes, on existing fixed, intact tiling. The surface must be clean and free of grease. On absorbent cement substrates, priming is required beforehand (\u003ca href=\"\/en\/products\/kerakoll-active-prime-grip\"\u003eActive Prime Grip\u003c\/a\u003e).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much water is needed for a 25 kg bag?\u003c\/strong\u003e \u003cbr\u003eFor floors (more fluid): grey ≈ 9.5 l, white ≈ 8.25 l. For walls (more thixotropic): grey ≈ 7.5 l, white ≈ 6.25 l.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in pools or showers?\u003c\/strong\u003e \u003cbr\u003eYes for pools — filling after ≈ 14 days. For showers, waterproofing is required first (\u003ca href=\"\/en\/products\/kerakoll-aquastop-nanogum\"\u003eAquastop Nanogum\u003c\/a\u003e or \u003ca href=\"\/en\/products\/kerakoll-nanodefense-eco\"\u003eNanodefense Eco\u003c\/a\u003e), then H40 Gel is applied.\u003c\/p\u003e\n\u003ch2\u003eH40 System\u003c\/h2\u003e\n\u003cp\u003eH40 is Kerakoll’s structural gel adhesive line — every product tested with the GT method, suitable for porcelain, ceramic, and natural stone. All are suitable for indoor and outdoor use, underfloor heating, terraces, and swimming pools.\u003c\/p\u003e\n\u003ch3\u003eH40 tile adhesive line — which one do you need?\u003c\/h3\u003e\n\u003cbr\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eClassification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneral tiling, large tile, underfloor heating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eH40 Gel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGT-2, C2 TE S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFast setting, cold weather, water-sensitive natural stone\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/en\/products\/kerakoll-h40-advanced\"\u003eH40 Advanced\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eGT-2, C2F TE S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFacade, moving substrate (wood, metal), large tile reinforced with fabric\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/en\/products\/kerakoll-h40-tech\"\u003eH40 Tech\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eGT-3, C2 TE S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical and thermal resistance, metal substrate, highest strength\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/en\/products\/kerakoll-h40-extreme\"\u003eH40 Extreme\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eGT-3, R2 T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003eSee the entire H40 range in the \u003ca href=\"\/en\/collections\/ragasztok-csemperagaszto\"\u003etile adhesives\u003c\/a\u003e category. The system is completed with decorative grouts from \u003ca href=\"\/en\/collections\/kerakoll-color-fill\"\u003eColor Fill\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrimers:\u003c\/strong\u003e on gypsum, anhydrite, wood, metal, or PVC substrates, a primer is required before bonding — \u003ca href=\"\/en\/products\/kerakoll-active-prime-fix\"\u003eActive Prime Fix\u003c\/a\u003e or \u003ca href=\"\/en\/products\/kerakoll-active-prime-grip\"\u003eActive Prime Grip\u003c\/a\u003e (EP21 for H40 Extreme). Highly absorbent cement substrates can be pre-wetted or primed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproofing:\u003c\/strong\u003e in wet areas, H40 provides a monolithic, waterproof system with the \u003ca href=\"\/en\/collections\/vizszigeteles\"\u003eKerakoll waterproofing\u003c\/a\u003e product line.\u003c\/p\u003e","brand":"Kerakoll","offers":[{"title":"Fehér \/ 25 KG","offer_id":56743744602436,"sku":"K003H8","price":17350.0,"currency_code":"HUF","in_stock":true},{"title":"Szürke \/ 25 KG","offer_id":56743744569668,"sku":"K003H7","price":16950.0,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8027\/4946\/files\/KerakollH40Gelrugalmascsemperagasztonagylapokra_1.jpg?v=1778532324","url":"https:\/\/www.masterworks.hu\/en\/products\/kerakoll-h40-gel","provider":"Masterworks Hungary","version":"1.0","type":"link"}