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Bantry Bay is exposed to some of the most demanding coastal conditions in Cape Town. Atlantic swells, salt spray, south-easter gales and Cape winter rain combine to test every waterproofing system to its limits. Flat roofs, balconies with ocean views, below-grade storage areas and exposed parapet walls are all vulnerable. A standard waterproofing product applied without the right surface preparation will fail in one season here. Bantry Bay properties need contractors with coastal experience and the right product knowledge for the environment.
For damp issues already affecting interior walls, see our damp proofing quotes Bantry Bay page. For all services visit the Bantry Bay painting quotes hub.
Flat roof waterproofing (per m²)
R140 to R320
Balcony waterproofing
R4,000 to R15,000
Parapet wall sealing (per m)
R200 to R400
Full roof waterproofing (medium)
R15,000 to R35,000
Below-ground / basement waterproofing
R10,000 to R50,000
Coastal-grade membrane premium
20% to 40% extra
Coastal waterproofing requires specialist products. Always confirm the system specification and warranty before accepting a quote.
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