Bathroom remodel guide: wet-area waterproofing, plumbing, and layout costs

Waterproofing is the difference between a 20-year bathroom and a hidden rot disaster. Here is what actually matters in a bathroom remodel.

Waterproofing systems: Why tile and grout are not waterproof#

Tile and grout are water-resistant surfaces, not waterproof barriers. The true waterproof barrier is the sealed membrane installed behind the tile (sheet membrane systems like Schluter Kerdi or elastomeric liquid membranes).

Primary ensuite bathroom remodel with walk-in shower — Cross-section cutaway: continuous liquid waterproofing membrane over pre-slope mortar bed and cement board.

Bathroom renovation component checklist#

Category	Standard Renovation	Premium Ensuite
Shower Area	Acrylic base + subway tile surround	Custom curbless tile pan + niche + linear drain
Waterproofing	Liquid membrane / sheet system to shower head	Full wet-room sheet membrane + vapor barrier
Vanity & Counter	Pre-assembled single vanity with quartz top	Custom double floating vanity with slab quartz
Flooring	12x24 porcelain tile with standard underlay	Heated floor membrane (Schluter Ditra-Heat) + stone tile

ModelQuoter

Planning a bathroom renovation? Model your project concept and explore itemized planning ranges before scheduling contractor walk-throughs.

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