Roof Waterproofing
Roof waterproofing is the foundation of every Cape Town home maintenance plan. Durbanville's mix of Cape-Dutch, modern flat-roof and tiled homes each demands a specific approach. Our vetted contractors install Index and Derbigum torch-on bitumen membranes for flat concrete roofs, Sikalastic liquid polyurethane systems for complex geometries, and Plascon Roof Care acrylic coatings for tile and IBR sheeting. Every installation comes with a 10-year workmanship guarantee plus the manufacturer warranty (10–25 years depending on the system).
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Benefits
10-year workmanship guarantee on every installation
Manufacturer-approved applicators (Index, Derbigum, Sika, Plascon)
Free no-obligation roof inspection before quoting
System matched to your roof type — flat, pitched or tiled
Installs timed for Cape Town's pre-winter dry weather (Feb–early May)
Written certification for body-corporate and insurance claims
Our Process
Free on-site roof inspection — usually within 24-48 hours
Detailed written quote with system spec and warranty terms
Surface preparation — pressure clean, repair, prime
Membrane or coating application by approved applicator team
Post-application water-test and snag list
Issue 10-year workmanship guarantee + manufacturer warranty cert
Pricing
From R220/m²
2026 indicative ZAR pricing. Torch-on R220-R380/m², liquid acrylic R150-R260/m², polyurethane R350-R550/m². Final quote on-site.
Get Accurate QuoteFrequently Asked Questions
How long does roof waterproofing last?
Torch-on bitumen lasts 15-20 years from an approved applicator. Liquid membranes 10-15 years. Polyurethane systems 15-25 years. All listed contractors offer a 10-year workmanship guarantee on top of the manufacturer warranty.
When should I waterproof my roof in Cape Town?
Late summer through autumn (February to early May) — before winter rains start. Cape Town's heaviest rainfall is May-August so leaving it until June often means waiting weeks for a dry weather window.
Can roof waterproofing be done over an existing membrane?
Sometimes. If the existing membrane is sound and adheres well, a compatible top-coat can be applied. If it's blistered, lifting or alligatored, full strip and re-application is needed. The free inspection determines which approach fits.
Roof Waterproofing Available Across South Africa
We provide roof waterproofing services in all major cities and towns across South Africa:
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