Step-by-step guide

Bathroom remodel steps: the sequence that prevents leaks

Water is the enemy in a bathroom. The steps that matter most are the ones you cannot see after the tile goes on.

BeforeAfter

1. Plan and permit

   Moving a toilet, shower or vanity drain, adding circuits or changing the fan usually needs permits. Ask first.

2. Demolition

   Shut off water, protect the drain openings, and check for rot under the toilet and tub. Test older materials for asbestos and lead first.

3. Fix the floor and framing

   Repair soft subfloor and damaged framing before anything else. Tile needs a stiff, flat base; the tile maker publishes deflection and flatness requirements.

4. Plumbing and electrical rough-in

   Licensed trades where required. Bathrooms need GFCI-protected outlets and a properly vented exhaust fan ducted outside, not into the attic.

5. Rough inspection

   Before walls close.

6. Backer board and waterproofing

   Use cement board or a foam board system rated for wet areas, then a waterproofing membrane per the manufacturer. Many systems require a flood test of the shower pan before tiling.

7. Tile

   Floor and walls, then grout and seal as the product requires.

8. Drywall and paint outside the wet zone

   Moisture-resistant products and a bath-rated paint.

9. Vanity, toilet, fixtures, trim

   Set the toilet with a new wax or foam ring, and caulk changes of plane in tile with the right sealant.

10. Final inspection

    Then run the fan during and after every shower.

Related: How to plan a remodel: budget, scope, permits, and DIY vs. hiring · Kitchen remodel steps in the right order · Remodel budget calculator