How-To Guide · 6 min read
The most expensive bathroom leak is the one hidden under the tiles. Once tiling is done, fixing a missed waterproofing step means ripping everything out. Here's how a bathroom should be waterproofed before tiling — the way our crews do it across Qatar.
Tiles and grout are not waterproof — water passes through grout lines and collects in the screed. Without a membrane underneath, that water travels to adjoining rooms and the floor below, causing damp, mould and concrete damage. The membrane is the real barrier; tiles are just the finish.
Skipping corner and penetration detailing. Flat areas rarely leak — junctions and drains do. Reinforcement mesh at these points is non-negotiable.
Our trained crews waterproof and flood-test bathrooms to manufacturer spec, with a written warranty. Book a free survey or explore cementitious systems.
Yes — with a textured membrane like SR Coat MTR 50, tiles bond directly to the waterproofing. Cementitious SR Flex also accepts tile adhesive well.
Typically after the membrane has cured and passed a flood test — usually 24–72 hours depending on the product and conditions.
Yes. Shower walls and the area around the bath should be waterproofed up to at least 1.8 m, plus the whole wet-area floor and skirting.
