Roof Waterproofing in South Africa seals a roof against rain using a membrane, coating or sealing system suited to the roof type. Send one request and independent local waterproofing contractors reply with prices.
Say what kind of roof you have and where it leaks, and get quotes.
Get Waterproofing QuotesRoof Types and What They Need
- Flat roofs. Need correct falls, clear outlets and a continuous membrane.
- Concrete roofs. Need crack repairs and a sound, dry slab before any system goes on.
- Metal roofs. IBR and corrugated roofs need screws, laps and rust dealt with.
- Tiled roofs. Ridges, valleys, flashings and cracked tiles cause most leaks.
- Parapets and gutters. Box gutters and parapet walls often leak before the main roof does.
Common Roof Problems
- Ceiling stains. Marks that grow after rain.
- Cracked membrane. Split, blistered or lifting torch on or coating.
- Failed flashings. Gaps where the roof meets walls, chimneys or pipes.
- Blocked outlets. Water ponds and finds the weakest joint.
- Rust and loose screws. Water enters at screw holes and sheet laps.
Methods and When They Fit
- Torch on membrane. Common on flat concrete roofs with foot traffic or ponding risk.
- Acrylic system. Membrane and coats for sloped concrete, metal and some flat roofs.
- Polyurethane liquid. Seamless coating for complex details and roofs with many penetrations.
- Spot repairs. Flashings, laps and ridges when the rest of the roof is sound.
The right system depends on an inspection and the cause of the leak. A coating over a roof with poor drainage or failed flashings will not stop the water.
Roof Waterproofing Prices
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Leak inspection call-out | R500 - R1,500 |
| Acrylic roof system | R120 - R280 per m² |
| Torch on membrane, 4mm | R250 - R450 per m² |
| Metal roof coating system | R120 - R280 per m² |
| Tile roof waterproofing | R150 - R350 per m² |
| Flashing replacement | R150 - R400 per metre |
| Scaffolding or access | R5,000 - R15,000 |
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
- Roof type and size. Each roof type needs different materials and labour.
- Condition. Stripping old membranes or treating rust adds cost.
- Access. Double-storey or steep roofs may need scaffolding.
- Details. Parapets, outlets, skylights and solar mounts take extra work.
How Roof Waterproofing Is Done
- Inspection. The contractor finds where and why water enters.
- Preparation. Cleaning, crack repairs, rust treatment and priming.
- Details first. Outlets, flashings and upstands are sealed.
- Main system. The membrane or coating goes on the full roof area.
- Check. Outlets and details are checked after the next rain.
Preparation and Disruption
- Weather. Most systems need dry weather to apply and cure.
- Access. Clear paths, gates and parking for materials.
- Solar and geysers. Panels or equipment on the roof may need lifting.
- Inside. Most work is outside, so the home stays usable.
Maintenance and Questions to Ask
- Yearly check. Clear gutters and outlets and check flashings before the rainy season.
- Recoat. Acrylic coatings usually need a recoat every few years.
- Ask. What caused the leak, what system and thickness, and what the guarantee covers.
Roof Waterproofing FAQs
Which roof waterproofing is best?
It depends on the roof type, its condition and how water drains. Torch on suits many flat concrete roofs, while acrylic systems suit many sloped roofs.
Can a roof be waterproofed in winter?
Yes, between rain spells. Most systems need a dry surface and dry weather while they cure.
Do I need to strip the old waterproofing?
Not always. Loose, blistered or failed layers usually come off, while sound layers can sometimes be overlaid.
How long does roof waterproofing last?
It depends on the system, preparation and maintenance. Ask each contractor what life they expect and what their guarantee covers.
Can I just fix the leak spot?
If the rest of the roof is sound, a spot repair can work. If the system has failed widely, a full re-waterproof is usually better value.
Related Services
Request roof quotes through Waterproofing South Africa and compare the system, preparation and guarantee each contractor offers.
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.
Roof 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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