Waterproofing a Bathroom

Learn how to avoid leaks and excess moisture build-up on walls, ceilings and floors.

Recycled Glass Bathroom

Recycled Glass Bathroom

Photo by: Designer, Lori Dennis

Designer, Lori Dennis

Recycled glass tiles fill this bathroom to give it an underwater appearance, while the custom concrete sinks add a masculine touch to the room. The under-counter hampers add a contrasting color to the tile and to the wood floor mat and bench. The curvy wall sconce also balances the geometric feel of the space. Design by Lori Dennis

By: Kristen Hampshire

Water, water everywhere? Bathrooms are, by nature, wet spaces. But you want to be sure that water doesn’t leak through walls and cause mold or other damage. To avoid leaks and excess moisture build-up, take care to waterproof your bathroom wall, floor and ceiling.

Walls. Behind the shower is breeding ground for mold, mildew and rot. Be sure to apply a moisture barrier before installing your finished wall. This will keep water droplets from reaching the wall material. Wallboard should be rated for a moist environment. Finally, be sure to seal your walls. Beyond the shower, tile is easy to maintain and keeps water out of the walls.

Floors. Tile is your best bet for keeping water from seeping through to floor boards. Honed tile is slip-resistant, and larger grout lines will also give you better traction. Remember to seal grout annually. “Water can get into and behind grout,” says Cassia Wyner, designer/owner, CW Design, Brookline, Mass.

Ceilings. Select waterproof paint and install a vent to usher moist air out of the bathroom.

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