Waterproofing Pretoria: keeping water out of a building wherever it can get in, from flat roofs to balconies and walls. The right system depends on where the water is coming from, so a good contractor finds the entry point before choosing a product.
Send photos of the leak or wet area to get waterproofing quotations.
Get the Best QuoteAreas That Get Waterproofed
- Roofs. Flat concrete roofs, gutters, valleys and roof junctions. See roof waterproofing for detail.
- Parapets and copings. Tops of parapet walls where water soaks in.
- Balconies and patios. Slabs over living spaces.
- External walls. Porous walls exposed to driving rain.
- Showers and wet areas. Under-tile membranes, usually during renovations.
- Retaining and basement walls. Walls with soil against them.
Signs You Need Waterproofing
- Water stains on ceilings after rain.
- Bubbling or peeling paint below parapets and windows.
- Damp patches on walls next to balconies.
- Ponding water on a flat roof days after a storm.
- Cracked or lifted old membranes.
Common Waterproofing Systems
- Torch-on membrane. Bitumen sheets heat-bonded to the surface. Common on flat roofs.
- Liquid membrane. Brushed or sprayed coatings, often acrylic or polyurethane, reinforced with fabric at joints.
- Cementitious coating. Used on walls, tanks and below tiles.
- Waterproof wall coatings. Elastomeric paints that bridge fine cracks on external walls.
How the Work Is Done
- Find the water entry point. Leaks often show up far from where water gets in.
- Remove failed membranes and loose material.
- Repair cracks, screed falls and fix drainage outlets.
- Prime the surface.
- Apply the system, with reinforcement at joints, corners and outlets.
- Test with water where practical and check drainage.
Waterproofing Prices
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Liquid membrane, per m² | R150 - R350 |
| Acrylic waterproofing coating, per m² | About R120 |
| Cementitious coating, per m² | About R140 |
| Walls and parapets system, per m² | About R150 |
| Torch-on membrane, per m² | R250 - R500 |
| Polyurethane membrane, per m² | R350 - R500 |
Prices JUST UPDATED. Ballpark figures, rounded, taken from rates published by South African painting and waterproofing businesses and cost guides. They are not our prices or quotations, and no contractor is bound by them. Most sources do not say whether VAT or materials are included, so confirm both on every quotation.
Sources:
- OurPower - waterproofing cost calculator
- Procompare - waterproofing cost guide
- PaintingPrice.co.za - waterproof painting costs
What Affects the Quotation
- The area in m² and how many junctions, outlets and upstands it has.
- Removal of old membranes and repairs to the surface.
- The system chosen and the number of layers.
- Access, such as scaffolding or working on a pitched roof.
- Whether tiles, paint or other finishes have to be lifted and reinstated.
Pretoria Conditions to Plan For
Most of Pretoria's rain falls in short, heavy summer storms, often with hail, so waterproofing gets tested hard over a few months. Winter is dry, which makes it a good time to find and fix problems before the rain returns. Strong sun also breaks down exposed membranes, so many systems need a reflective or protective top layer.
Get prices for your job rather than a range. Send one request and compare replies.
Get the Best QuoteWaterproofing Pretoria FAQs
How do I know where the leak is coming from?
A contractor should inspect the roof, parapets, gutters and junctions. Water often travels before it shows on a ceiling, so the stain is not always below the entry point.
Can I waterproof in the rainy season?
Only on dry surfaces in dry weather. Many systems need hours or days without rain, so summer work can be delayed by storms.
Is waterproofing the same as damp proofing?
No. Waterproofing keeps rain out from above or the side. Damp proofing deals with moisture rising from the ground or trapped in walls.
How long does waterproofing last?
It depends on the system, thickness and maintenance. Ask each contractor what the product is expected to last and what maintenance it needs.
Related Services
Request waterproofing quotations through House Painters PTA and compare the system each contractor recommends.
House Painters PTA is a quote-comparison service. We do not carry out painting or waterproofing work or employ painters. Work is quoted and carried out by independent contractors, and your contract is with the contractor you choose. Ask each one for a written quotation that names the products, number of coats, preparation, timing and any warranty terms before you pay a deposit.
Waterproofing Pretoria. Request waterproofing quotations from independent Pretoria contractors.
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