Description
Kerakoll H40 Gel Adhesive Standard Set S1 in Grey is a multipurpose, structural tile adhesive engineered by Kerakoll in Italy and built around their proprietary Gel-Adhesive technology. The result is a single adhesive that behaves as both a thixotropic paste and a fluid-bed mortar — giving the tiler full back-buttering coverage on large-format tiles while remaining non-slump on vertical applications.
Classified C2TE S1 to European standard, H40 Gel delivers the deformability required for the most demanding substrates: underfloor heating systems, anhydrite screeds, timber-based subfloors and external terraces all sit comfortably within its specification. The extended open time and generous pot life give installers the working window needed for large-format porcelain installation without the risk of skinning between trowel-out and tile placement.
The grey formulation is the standard choice for general tiling work and complements darker grout colours and most porcelain tile palettes. White is also available in the same H40 Gel family for light-coloured tiles, translucent stone, glass mosaic and any installation where adhesive bleed through the joint must be avoided.
Built on Kerakoll's premium-trade specification standards, H40 Gel sits at the heavy-end of the trade adhesive market — the right specification for tilers and contractors working to architect-specified build-ups and high-spec commercial installations.
Key features
- Classification: C2TE S1 — standard set, highly flexible, extended open time
- Gel-Adhesive technology — thixotropic and fluid in a single product
- Extended open time and pot life — better working window on large-format tiles
- Non-slump and non-slip — supports heavy and large-format wall tiles
- Suitable for porcelain, ceramic and natural stone of all sizes
- Compatible with underfloor heating, anhydrite screeds and timber-based subfloors
- Polymer-modified — improved tensile strength and crack resistance
- 20kg bag, grey formulation
Suitable for
- Large-format porcelain and ceramic tile installations on walls and floors
- Natural stone, marble and granite tiling (with appropriate adhesive selection guidance)
- Underfloor-heated screeds and anhydrite (calcium sulphate) substrates
- Internal and external installations including terraces and balconies
- Domestic bathrooms, kitchens, wetrooms and high-traffic commercial floors
- Tile-on-tile installations with appropriate primer preparation
Part of the full Kerakoll tile installation system — pair with Kerakoll primers, Fugabella grouts and silicones for a complete, manufacturer-warranty-compatible tiling specification.