What waterproofing membrane means
A waterproofing membrane is a sheet or roll on liquid applied over the backer in a shower or wet area so water cannot reach the wall framing.
Also called shower membrane, liquid membrane, Kerdi.
Where it matters on a tile job
The membrane is what keeps a shower from rotting the house, more than the tile. Flood test the pan before tiling and photograph it; that photo is worth a lot if a leak shows up later.
What it costs
The shower installation cost guide has the typical job at $8,200 and the usual range at $4,450 to $11,000. The guide shows its sources and what moves the price. The bathroom remodel cost calculator prices a job line by line.
Work it out
- Free calculator: Bathroom remodel cost calculator
- Cost guide: Shower installation cost
- Tools, templates and guides: Free tile resources