BalconyWaterproofing
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Get Free QuotesWhy Balcony Waterproofing Matters
- A balcony is outside and gets wet every time it rains.
- Water soaks into concrete and causes cracks and structural damage.
- Leaks from your balcony can drip into the room below - causing big damage.
- Mould and damp patches often start from a poorly sealed balcony.
- Waterproofing keeps your balcony safe, dry, and looking good.
- It protects your investment and prevents very costly repairs later.
Types of Balcony Waterproofing
Concrete Balcony Sealing
- •Bare concrete absorbs water like a sponge.
- •A waterproof sealant is applied to the concrete surface.
- •It forms an invisible shield that water cannot get through.
- •Works on new and old concrete balconies.
- •Must be reapplied every few years for best results.
- •Cheap to do now - very expensive if you leave it too long.
Tiled Balcony Waterproofing
- •Tiles look nice but water sneaks in through the grout (the stuff between tiles).
- •The waterproofing layer goes UNDER the tiles - not on top.
- •Old tiles may need to be lifted, waterproofed underneath, then re-laid.
- •Grout can also be sealed to stop water soaking through.
- •Cracked or loose tiles must be fixed first.
- •A professional will check the slope of the balcony to make sure water drains away.
Balcony Leak Repairs
- •If your balcony is already leaking, repairs are needed urgently.
- •A professional finds exactly where the water is getting in.
- •Cracks are filled with flexible sealant.
- •Damaged waterproofing membranes are patched or replaced.
- •Drainage points (drains) are checked and cleared.
- •After repairs, a new waterproof coating is applied for extra protection.
Warning Signs Your Balcony Needs Waterproofing
- Water stains on the ceiling of the room under your balcony.
- Cracks in the balcony floor or walls.
- Tiles that feel loose or hollow when you tap them.
- Rust stains (from water reaching the steel inside the concrete).
- Mould or green algae growing on the balcony surface.
- Water that does not drain away after rain.
How Much Does It Cost?
- Small balcony (under 20m²): R2,500 – R6,000.
- Medium balcony (20–50m²): R6,000 – R15,000.
- Large or complex balconies: R15,000+.
- Leak repairs vary - depends on how bad the damage is.
- Prices differ between companies - always get multiple quotes.
- Fixing it now is much cheaper than fixing water damage later.
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