It starts as a faint shadow on the wall behind the bathroom, out in the hallway or in the bedroom next door. A few weeks later the paint is blistering and the patch has doubled in size. The paint is rarely the problem. More often there's a leak hidden behind the tiles: a cracked pipe, a worn seal around the shower drain, or waterproofing that gave out years ago. A fresh coat of paint will cover it for a few months and no more. The real fix starts with finding where the water is coming from. Then you decide between a targeted repair and, if the pipes and waterproofing are past saving, a full bathroom renovation.
Clues that water is getting behind the tiles
- Damp on the wall you share with the bathroom, darker or wider after every shower.
- A white, salty crust or powder forming on the plaster beside the bathroom.
- The wooden frame of the bathroom door swelling or rotting at the bottom.
- Your downstairs neighbors mention a stain spreading across their bathroom ceiling.
- A musty smell that lingers even after the room has aired out.
- Black or crumbling grout around the tub or shower floor, or a tile that shifts underfoot.
A full bathroom renovation, step by step
- 1Stripping out the old tilesWall and floor tiles come off down to the plaster or concrete, and the rubble is cleared as the work goes. This is the point where the real condition of the old pipes, and of every damp spot, finally shows.
- 2New plumbing in the walls and floorDamaged supply and drain pipes are replaced, and the outlets for faucets and drains are set to match the new layout. The pipes are then pressure-tested while still exposed, so a weak joint shows up now rather than after the tiles are down.
- 3Waterproofing and a flood testThe floor and the wet zones of the walls get a waterproofing layer, sealed carefully around every pipe and the floor drain. The floor is then flooded and left for a while as a test. Have the membrane photographed in the order before it's covered; it's the one part of the job you'll never see again.
- 4Tiling with the right slopeTiles go on the walls and floor, and the shower area gets a gentle slope toward the drain so water never sits. Grout comes last, and a water-resistant type is the better choice anywhere the shower reaches.
- 5Fitting the fixturesThe toilet, sink, faucets, and shower go in, with a bead of silicone around the basin and tub. Before the technician leaves, run every faucet, flush the toilet, and check under the sink yourself.
Smaller bathroom jobs, no demolition needed
- Replacing a dripping faucet, or fixing a shower mixer that swings between hot and cold on its own.
- A toilet tank that keeps refilling and running, or a flush button that sticks.
- A new shower head and hose, or a full shower enclosure.
- Fitting a vanity, a mirror cabinet, or shelves so they sit level and stay put.
- Fresh grout and silicone around the tub and basin without touching the tiles.
- Clearing a slow drain in the sink, tub, or floor.
- Swapping out a toilet or adding a bidet sprayer.
Snap a photo of the damp patch and request a bathroom visit in the Aman Fix app.
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