Cementitious Waterproofing in South Africa uses cement-based slurries and coatings that bond to concrete and masonry. Send one request and independent local waterproofing contractors reply with prices.
Describe the area and the water problem, and get cementitious quotes.
Get Waterproofing QuotesWhere Cementitious Coatings Are Used
- Wet areas. Bathrooms and showers before tiling.
- Water tanks and reservoirs. Concrete tanks that hold water.
- Basements and retaining walls. Including the inside face where the outside cannot be reached.
- Lift pits and below-ground rooms. Damp concrete walls and floors.
- Planters and ponds. Concrete and masonry that holds water or soil.
Rigid or Flexible
- Rigid slurry. Suits stable concrete that will not crack. Often used on the negative side.
- Flexible two-part coating. Polymer-modified, bridges hairline cracks and small movement.
- Crystalline products. React with concrete to block pores from inside.
The right product depends on water pressure, movement and whether the coating goes on the wet or dry side.
Signs It May Be Needed
- Damp patches on basement or below-ground walls.
- Leaking concrete water tanks.
- Water seeping through retaining walls.
- Bathrooms being redone where a base waterproofing layer is needed.
Cementitious Waterproofing Prices
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Cementitious coating, supplied and applied | R140 - R300 per m² |
| Surface preparation | R30 - R60 per m² |
| Crack and joint sealing | R60 - R180 per metre |
| Polyurethane liquid where flexibility is needed | R350 - R500 per m² |
| Bathroom under-tile waterproofing per room | R3,500 - R9,000 |
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
- Water pressure. Negative-side and pressure areas need heavier systems.
- Surface condition. Hacking off old plaster or paint adds labour.
- Product type. Flexible and crystalline products cost more than rigid slurry.
- Access. Tanks, pits and confined spaces take longer.
How the Work Is Done
- Assessment. The contractor finds where water comes from and how much pressure there is.
- Preparation. Surfaces are cleaned to sound concrete and pre-wetted.
- Detailing. Cracks, joints and corners are sealed or filleted.
- Coating. Two or more coats are brushed or trowelled on.
- Curing. Coats are kept damp and protected while they cure.
Preparation and Disruption
- Drain tanks. Tanks must be emptied and dried before work.
- Ventilation. Basements and pits need airflow during work.
- Downtime. Allow curing time before tiling or refilling.
Questions to Ask
- Is the product rigid or flexible, and why?
- Is it approved for drinking water if used in a tank?
- How many coats and what thickness?
- How long before tiling or refilling?
Cementitious Waterproofing FAQs
Can cementitious waterproofing stop rising damp?
Not on its own. Rising damp usually needs a damp proof course, with a cementitious coating as part of the repair.
Is it safe for drinking water tanks?
Only products certified for potable water. Ask the contractor for the product data sheet.
Can it be applied from the inside of a basement?
Yes, some products work on the negative side. Outside waterproofing is usually better if access is possible.
Does it crack?
Rigid coatings can crack if the structure moves. Flexible coatings handle small movement.
Related Services
Request cementitious waterproofing quotes through Waterproofing South Africa and compare the products each contractor proposes.
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.
Cementitious 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.
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