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Tiling in wet areas (bathrooms, etc...)




Sensitive points for water ingress in wet areas

Joints between tiles are potential sources of water ingress, even if they are water-resistant






Junctions between walls and floors (wall/wall, floor/wall) are under strong constraints and often represent a source of water ingress





 Sensitive points around pipes, taps and fittings also frequently allow water penetration

Consequence of water ingress in wet areas

 Water leakage in walls lead to deterioration in adjoining rooms






Some substrates, particularly gypsum plaster and plasterboard, are very sensitive to humidity and have very little strength when wet.

Continued water ingress will, over time, cause the substrate to disintegrate and fail.




  As a final result, tiles can de-bond and cause the failure of the full system.


Substrate preparation

Check adhesion of existing substrate and scratch existing paint coatings

Replace hollow tiles with other tiles or fill the void with a suitable repair mortar, like

Conrep.331 TX or other repair product.

Clean the substrate and remove traces of dust, oil and other contaminants.

Rinse the substrate and let it dry



Waterproofing layer and tile adhesive

 Tiling over sand bed:

Apply 2 layers of weberdry 210 AFC or weberdry gum, an acrylic waterproof membrane, between the concrete substrate and the sand bed. All corners should receive a band of plastic mesh or polyethylene between the 1st and 2nd layer of weberdry 210 AFC or weber band between the 1st and 2nd layer of weberdry gum. After 24 hours minimum, fix the tiles with webercol floor, a thick adhesive mortar applied above the sand bed.

webercol floor can be applied up to 40mm thickness.

Tiling over concrete/plaster:



Cement-based system: Apply two coats of cementitious waterproofing membrane weberdry 130 PRwith a band of polyethylene or plastic mesh embedded in the 1st coat.The application of weberdry 110 FX is recommended in all corners and junctions between walls and floors. Tile with webercol plus or webercol flex.

Apply the 1st layer of weberdry gum with sufficient thickness to plug pores, cracks, and holes. Allow to dry and apply the second layer if necessary. Wait 6 hours between a coat and another. All corners, cracks or construction joints should receive reinforcement by introducing weber band between the first and the second layer. Wait at least 24 hours after application of weberdry gum before tiling.The final thickness of the product must exceed 1mm in order to form a consistent, seamless and flexible membrane.

Tile grouting

It is recommended to leave a minimum joint width of 2mm around the tiles. Grouting should be done at least 24 hours after fixing tiles, using weber.joint perfect, a high performance grout with Hydro Repell® and Mould Stop® technologies, to avoid the creation of fungus and to reduce water absorption from the joints.

Important Note

Fixing material must be chosen to suit the level of exposure to water.

Please refer to products technical data sheets on or ask for technical advice to know the exact scope of use.



Solution with the following weber products


webercol floor

Thick adhesive mortar

webercol flex

Two components high performance cementitious flexible tile adhesive (latex modified)

webercol WP

Regular cement based tile adhesive (latex modified)


weberjoint perfect

High performance, Low Stain, cementitious tile grout with Hydro Repell and Mould Stop technologies

weberjoint/ weberjoint thick

Cementitious tile grout