Grout and tiles are not waterproof on their own. We tank the whole shower area with a waterproofing system before a single tile goes on, then guarantee it for ten years.
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Every shower we build has cement backer board on the walls and a tanking membrane with sealed corners, pipe collars and drain flange. Wet room floors are laid to a fall towards a linear or centre drain, so water runs away and does not sit on the floor.
We flood-test the tanking before tiling. Neil leads our wet rooms and will show you the waterproofing before it is covered up, with photographs for your records.
Walls and floor waterproofed before tiling.
Checked for leaks before any tile goes on.
On the waterproofing, in writing.

Kings Langley
An old shower cubicle was replaced with a tanked walk-in shower in handmade green mosaic, with a linear drain and a glass screen. Tiled and sealed in six days.
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Usually water is getting through cracked grout or failed silicone into a wall that was never tanked. We can find the cause and quote to rebuild it properly.
Usually, yes. We check the joists and build the fall into the floor with a shower former. On some floors a low tray works better, and we will explain why.
Call the office, or send a few details and photos of the room and we will call you back to arrange a visit.
01632 960 795We reply within one working day, Monday to Saturday.
Monday to Friday 8:00–17:30
Saturday 9:00–13:00