Under Tile Waterproofing in South Africa is a membrane laid under tiles so water that gets through grout cannot reach the slab or walls. Send one request and independent local waterproofing contractors reply with prices.
Give the room type and size, and get under-tile waterproofing quotes.
Get Waterproofing QuotesWhere It Is Needed
- Bathrooms and showers. Floors and shower walls.
- Balconies and patios. Tiled areas over rooms below.
- Kitchens and laundries. Floors near sinks and machines.
- Pool surrounds. Tiled areas around pools.
Signs the Waterproofing Failed
- Damp or stains on the ceiling below a bathroom or balcony.
- Loose or hollow tiles.
- Dark or crumbling grout.
- Damp skirting or plaster next to a shower.
System Options
- Liquid membrane. Brushed or rolled on, often with fabric at corners. Suits most rooms.
- Sheet membrane. Pre-formed sheets bonded to the floor. Even thickness.
- Cementitious flexible coating. Bonds well to screed and tiles adhere well to it.
- Bond-breakers and fillets. Allow movement at corners and floor-to-wall joints.
The system depends on the substrate, falls to drains and whether the area is inside or outside.
Under Tile Waterproofing Prices
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Under-tile membrane | R180 - R380 per m² |
| Bathroom floor and shower, per room | R3,500 - R9,000 |
| Lift old tiles and screed | R80 - R200 per m² |
| New screed to falls | R60 - R150 per m² |
| Polyurethane liquid on balconies | R350 - R500 per m² |
Prices JUST UPDATED. Indicative ballpark figures in rand, rounded, including labour unless stated. They are not our prices or quotations, and no contractor is bound by them. Confirm VAT, access costs, the product system and what each quotation includes.
Get prices for your property rather than a range. Send one request and see who replies.
Get Waterproofing QuotesWhat Affects the Quote
- Retiling. Lifting and replacing tiles is often the largest cost.
- Area. Small rooms cost more per m².
- Falls and drains. Rescreeding to drains adds work.
- System. Sheet and PU systems cost more than basic liquids.
How It Is Done
- Inspection. The contractor checks the leak source and falls.
- Strip. Old tiles and loose screed are removed where needed.
- Prepare. Surfaces are repaired and primed. Falls are corrected.
- Detail. Bond-breakers, fillets and drain collars are fitted.
- Membrane. Applied in the specified coats and turned up the walls.
- Cure and test. The membrane cures, and is ideally flood-tested before tiling.
Preparation and Disruption
- Room out of use. A bathroom is usually out of use for several days.
- Dust and noise. Lifting tiles is noisy and dusty.
- Curing time. Tiling must wait until the membrane has cured.
Questions to Ask
- Who does the tiling, and who is responsible if it leaks?
- How high up the walls will the membrane go?
- Will you flood-test before tiling?
- How are drains and corners detailed?
Under Tile Waterproofing FAQs
Can waterproofing go on top of existing tiles?
Some clear or tileable coatings can, but lasting fixes usually need a membrane under the tiles.
How long must the membrane cure before tiling?
Usually 24 to 72 hours, depending on the product and weather.
Do all bathrooms need under-tile waterproofing?
Showers and wet floors over other rooms should have it. Ask the contractor for the area to cover.
Does sealing the grout fix leaks?
It can reduce water entry for a while, but it does not replace a membrane.
Related Services
Get under-tile quotes through Waterproofing South Africa and confirm who is responsible for tiling and testing.
Waterproofing South Africa is a quote and referral service. We do not carry out waterproofing work and we do not employ contractors. Work is quoted and carried out by independent local contractors, and your agreement is with the one you choose. The right system depends on an inspection and the cause of the water ingress. Ask for a written quotation, the product system and the guarantee terms before you pay a deposit.
Under Tile Waterproofing. Describe what you need once and get the best quote, fast.
Get Waterproofing QuotesGet the Best Quote, Fast
Keep it brief. Say what is leaking or damp, the type of surface and your suburb. Your enquiry is passed only to contractors suited to the job, and you decide whether to go ahead.
Client Reviews
Powered by leaderr
