Rubber waterproofing Cape Town covers two different things sold under the same word: EPDM sheet membrane, and liquid-applied rubberised coatings.
They behave differently and are priced differently, so it is worth knowing which one a quote means. Other liquid chemistries sit under liquid waterproofing, and services under Waterproofing Cape Town.
Send the area involved and photos of the surface as it stands. That is usually enough to price it.
Get a QuoteSheet EPDM Versus Liquid Rubber
| Type | Characteristics |
|---|---|
| EPDM sheet | Large single-piece rubber sheet, adhered or ballasted. Very few joints, long life, needs a clean simple roof. |
| Liquid rubberised | Applied wet, cures to a seamless elastomeric film. Follows complex detail, shorter life. |
| Where sheet wins | Simple, open, rectangular roofs with few penetrations. |
| Where liquid wins | Complex roofs, awkward upstands, and overlays onto existing systems. |
| Common factor | Both tolerate movement far better than acrylic or rigid cementitious systems. |
What Rubber Is Good For
- High movement. Very high elongation, so it accommodates thermal and structural movement.
- Cold flexibility. Stays flexible at low temperature, unlike some bitumen products.
- Ponding tolerance. Handles standing water better than water-based systems, though falls are still better.
- Root and planter areas. Some grades are specified beneath green roofs and planters.
- No open flame. Both sheet and liquid versions avoid hot works.
Rubber Waterproofing Cape Town Prices
| Job | Indicative range | What moves it |
|---|---|---|
| Rubberised or EPDM system | R320 – R700 per m² | Sheet or liquid-applied. |
| Liquid-applied system | R140 – R400 per m² | Coat count and reinforcement. |
| Polyurethane system | R250 – R550 per m² | Flexible, trafficable grades cost more. |
| Surface preparation | R20 – R100 per m² | Cleaning, crack filling, priming. |
| Strip failed membrane | R60 – R150 per m² | Including removal from site. |
| Screed to correct falls | R250 – R600 per m² | Where water is ponding. |
| Localised membrane patch | R2,000 – R6,000 | Isolated failure. |
| Parapet and upstand detailing | R250 – R550 per linear metre | Height and complexity. |
| Access equipment | R2,500 – R15,000 | Height, duration and permits. |
These are indicative market ranges, not a quotation. They are compiled from published South African waterproofing and roofing pricing to give you a starting point for budgeting. They are not the rate card of any company on this platform.
Compare quotes on the system specified, the number of coats, what preparation is included and what the guarantee covers. A rate per square metre means nothing until you know what the rate covers.
Compare quotes on what is included, not on the total alone.
Request QuotesWhat to Check on a Rubber Quote
- Which system is actually meant: EPDM sheet or a liquid rubberised coating.
- For sheet, how seams and upstands are formed and whether the roof geometry suits a single sheet.
- For liquid, the coverage rate and coat count, since thin application is the usual failure.
- Whether a UV-stable finish is included where the surface stays exposed.
- How the system terminates at parapets and outlets.
- Compatibility with anything it is being applied over.
Related Services
Frequently Asked Questions
What is the difference between EPDM and liquid rubber?
EPDM is a large pre-formed rubber sheet laid in one or few pieces. Liquid rubber is applied wet and cures seamlessly in place. Sheet suits simple open roofs; liquid suits complex ones.
Is rubber waterproofing better than torch-on?
For roofs with significant movement, often yes, because rubber has far higher elongation. On a simple stable concrete roof torch-on is usually more robust and cheaper.
What should the quote specify?
The measured area, the system and product by name, the number of coats or layers, the preparation included, how upstands and outlets are detailed, access equipment, the guarantee term and the exclusions.
Do I need the leak found before the work is quoted?
If there is an active leak, yes. Water enters at one point and shows at another, so coating the stained area often misses the entry point entirely.
Is this covered by insurance?
Insurers generally cover sudden damage rather than gradual failure. A system at the end of its life is normally treated as wear and tear, and storm damage is a separate question your policy wording decides.
How many quotes should I get?
Three or more, on the same written brief. Rates vary widely because scope varies widely, and a spread of quotes shows quickly which contractor has actually inspected the job.
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