Bathrooms · Guide
Shower Waterproofing Before Tiling: A Pretoria Homeowner's Guide
Quick answer
Before tiling a shower, the floor and walls need a flexible waterproof membrane with reinforcing tape in all corners, at the drain and around pipes, applied in two coats and flood-tested. Tiles and grout alone are not waterproof.
It's the one step in a bathroom renovation you can't see afterwards, which is exactly why it gets skipped.
What proper shower waterproofing includes
- Correct falls to the drain in the screed.
- Primer on screed and walls.
- Reinforcing tape in every internal corner, wall-to-floor joint, and around the drain and pipes.
- Two coats of flexible membrane: full floor, shower walls to full height, and up the walls elsewhere.
- Curing time, then a flood test before tiling.
Questions to ask your builder or tiler
- Which wet-area membrane are you using, and how many coats?
- Will you tape the corners and drain?
- Can I see it before tiling starts?
We do pre-tiling shower and bathroom waterproofing across Pretoria East and can work alongside your own tiler.
Frequently asked questions
How long after waterproofing can I tile a shower?
Follow the membrane's curing time, typically 24–48 hours depending on the product and weather, and flood test before tiling.
Do bathroom floors outside the shower need waterproofing?
Yes, especially upstairs bathrooms and around baths. Water on the floor can soak the screed just like a shower leak.