Apartment waterproofing Cape Town covers leaks in blocks of flats: balconies discharging into the unit below, roof slabs over top-floor apartments, and wet areas failing between floors.
The technical work is standard. What differs is that the water usually appears in someone else's home, which makes it a scheme matter before it is a repair. Systems and methods sit 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 QuoteWhere Apartment Leaks Start
- Balconies. A failed or absent membrane under the tiles, showing in the ceiling of the unit below.
- Roof slabs. Top-floor units taking water through a slab that has been recoated several times.
- Bathrooms and showers. Under-tile membranes failing and tracking along the slab to a penetration.
- Parapets and copings. Water entering the top of a parapet and running down inside the wall.
- Balustrade fixings. Posts bolted through the slab, penetrating whatever membrane exists.
- Service penetrations. Pipes and conduits passing through slabs without a proper collar.
Whose Problem Is It
The unit where the water appears is rarely the unit where it enters. That makes the first question ownership rather than method: is the failing element common property or exclusive-use area under the scheme's rules?
Getting the cause established in writing early, with photographs, shortens that conversation considerably. See sectional title waterproofing for how those boundaries usually fall.
Apartment Waterproofing Cape Town Prices
| Job | Indicative range | What moves it |
|---|---|---|
| Balcony or terrace membrane | R450 – R900 per m² | Excluding tiling and screed. |
| Retiling over the membrane | R350 – R750 per m² | Excluding tile supply. |
| Torch-on membrane, single layer | R300 – R400 per m² | Flat and low-slope roofs. |
| Screed to correct falls | R250 – R600 per m² | Where water is ponding. |
| Parapet and upstand detailing | R250 – R550 per linear metre | Height and complexity. |
| Wet area waterproofing | R4,500 – R12,000 | Per bathroom or shower. |
| Leak trace and inspection | R750 – R2,500 | Area, access and testing time. |
| Single-defect leak repair | R800 – R5,000 | Flashing, lap or penetration. |
| 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 QuotesAccess and Scheduling
- Two units, one repair. Work often needs access to the unit above and the one below.
- Trustee instruction. Common property work is commissioned by the body corporate, not the resident.
- Working hours. Most blocks restrict noisy work to weekday hours.
- Material handling. Membrane rolls and gas have to come up a stairwell or lift.
Related Services
Frequently Asked Questions
Who pays for waterproofing in an apartment block?
It depends on whether the failing element is common property or exclusive-use area under the scheme's rules. Roof slabs are almost always common property; balconies vary. The trustees or managing agent can confirm before anything is commissioned.
Water is coming into my flat from the unit above. What now?
Report it in writing to the managing agent with photographs and dates, and ask for an inspection. The cause needs establishing before either owner commissions work, because that determines who is responsible for it.
How long does waterproofing last?
A correctly installed torch-on system generally gives 10 to 15 years. Liquid acrylic runs shorter, often 5 to 8. Both assume outlets are kept clear and the surface is checked once a year.
When should waterproofing be booked in Cape Town?
Late summer or autumn. Membranes and coatings need a dry substrate and a dry curing window, and contractors fill up as soon as the first winter fronts arrive.
Can waterproofing be applied over the existing coating?
Only where the existing layer is sound, dry and compatible. Coating over a blistered or delaminating membrane traps moisture underneath and the new work fails early.
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.
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