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Kerakoll H40 Extreme Hybrid Gel Tile Adhesive – Pallet Deals and Bulk Buy – Tested for extreme conditions


Kerakoll H40 Extreme tile adhesive

Highly deformable and workable hybrid gel‑adhesive, tested for extreme conditions and uses.

  • Very fast bonding
  • Stress resistant
  • Easy to spread
  • Monopack 10 kg (8,6 +1,4 kg)

Need a bespoke deal or spotted a pallet deal cheaper than ours? We can usually beat it! 0333 344 2655 or info@buythepallet.co.uk

~ FREE FAST 24-48HRS DELIVERY on BAL, MAPEI, ARDEX, KERAKOLL: If ordered before 12pm ~

£1,299.90£2,498.90 +VAT

£1,299.90 +VAT
£1,868.90 +VAT
£2,498.90 +VAT

Kerakoll H40 Extreme tile adhesive extended information

Coverage: ≈ 1.45 kg/m2 per mm of thickness

  1. Very fast bonding. Adhesive strength (4.5 N/mm2) 5 times superior to a class C2 cement-based adhesive after 24 hours
  2. Stress resistant. 10 times more deformable than a class S2 (> 50 mm) cement-based adhesive
  3. Easy to spread. 5 times less viscous than a (35 Pa·s) polyurethane adhesive, transforms into a smooth gel like a cement-based adhesive

Kerakoll H40 Extreme – Areas of application

Intended use:


  • existing tiles
  • heating systems
  • cement-based screeds
  • asphalt screeds
  • concrete
  • plasterboard
  • fibro-cement slabs
  • gypsum and anhydrite
  • cellular concrete
  • brick
  • lime and cement-based plasters/renders
  • finished and subsequently plastered thermal insulation panelling systems
  • impact noise insulation sheets
  • cracked screeds
  • uncured damp screeds
  • wood – metal – sheet metal
  • rubber floors – pvc
  • high-thickness coatings in epoxy and polyurethane resin
  • grp/fibreglass


  • porcelain tiles
  • laminated stoneware
  • porcelain tile with resin back
  • very large formats
  • low thickness slabs
  • ceramic tiles
  • marble – natural stone
  • marble with resin back
  • recomposed materials
  • cement-based recomposed materials
  • glass mosaics
  • glass tiles
  • thermal and acoustic insulation
  • terracotta – klinker
  • metal tiles


  • adhesive and finishing
  • interior waterproofing product
  • floors and walls
  • for internal and external use
  • overlaying
  • terraces and balconies
  • facades
  • wimming pools and fountains
  • saunas and spa
  • domestic
  • commercial
  • industrial
  • street furniture

Kerakoll H40 Extreme Instructions For Use

Preparation of the substrate

All the substrates must be flat, compact, free from dust, loose particles and debonding agents and not be subject to moisture rising.

It is best to apply a coat of diluted Kerakoll Primer A Eco on very absorbent cement-based substrates.

Adhesive preparation

Single Pack: Part B is found inside the pack.

Respect the preset ratio of 8.6 : 1.4.

Remix part B into the bucket containing part A, being careful to mix the two parts uniformly until a smooth, even coloured mixture is obtained.

For ease of mixing and application, it is recommend to store packs of Kerakoll H40 Extreme at a temperature of ≈ +20 °C for at least 2/3 days prior to use.


Kerakoll H40 Extreme can be applied with a suitable notched trowel, to be chosen according to the size and type of the tile. Using the smooth part of the trowel, apply a fine layer of product, pressing down onto the substrate in order to ensure maximum adhesion. Press down each tile into the ribbed adhesive to allow for maximum coverage of the surface.

To guarantee structural adhesion it is necessary to apply a layer of adhesive sufficient to cover the entire back of the coating material.

Large, rectangular sizes with sides > 60 cm and low thickness sheets may require adhesive to be applied directly to the back of the material. Check samples to make sure the adhesive has been transferred to the back of the material.

Create elastic expansion joints:

– ≈ 10 m2 in external applications,

– ≈ 25 m2 in internal applications,

– every 8 metres in long, narrow applications.

Respect all structural, fractionizing and perimeter joints present in the substrates.


Cleaning Clean the tools and any residues of Kerakoll H40 Extreme from the coated surfaces with water while the adhesive is still fresh. Once hardened, the adhesive can only be removed mechanically or using FugaShock Eco cleaner

Kerakoll H40 Extreme technical data

Shelf life≈ 24 months from the date of production in the original,
unopened packaging; protect from frost and humidity
Packmonopack 10 kg (8,6 +1,4 kg)
Mixing ratiopart A : part B = 8.6 : 1.4
Adhesive thicknessfrom 2 to 15 mm
Temperature of the air, substrates. and materialsfrom +5 °C to +35 °C
Pot life:
- +23 °C≈ 110 min
- +35 °C≈ 80 min.
Open time (BIII tile):
- +23 °C≈ 180 min.
- +35 °C≈ 90 min.
Correction time (BIII tile):
- +23 °C≥ 120 min.
- +35 °C≥ 60 min.
Foot traffic/grouting of joints (BIa tile):
- +23 °C≈ 4 hrs
- +5 °C≈ 15 hrs
Ready for use at +23 °C / +5 °C (BIa tile)
- light foot traffic≈ 6 – 20 hrs
- heavy traffic *≈ 12 – 24 hrs
- swimming pools (+23 °C)≈ 3 days
Coverage per mm of thickness≈ 1.45 kg/m2

Kerakoll H40 Extreme performance

Shear adhesion after 7 days≥ 7,5 N/mm2EN 12004-2
Shear adhesion after water
≥ 5 N/mm2EN 12004-2
Shear adhesion after thermal shock≥ 5,5 N/mm2EN 12004-2
Shear adhesion after immersion in
chlorine water
≥ 3 N/mm2EN 12004-2
Adhesion test according to EN 12004 for class C (cement based) adhesives
Tensile adhesion (concrete/porcelain
- after 6 hrs≥ 2,4 N/mm2EN 12004-2
- after 28 days≥ 4,5 N/mm2EN 12004-2
Durability test:
- adhesion after heat ageing≥ 4 N/mm2EN 12004-2
- adhesion after water immersion≥ 2,5 N/mm2EN 12004-2
- adhesion after freeze-thaw cycles≥ 2 N/mm2EN 12004-2
- adhesion after straining cycles ≥≥ 2 N/mm2SAS Technology
Transversal deformation≥ 50 mmEN 12004-2
Working temperaturefrom -40 °C to +90 °C



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