Balcony Waterproofing seals the deck, edges and drains of a balcony so water stops seeping into the room, garage or ceiling below. It suits homeowners, flat owners and body corporates dealing with damp patches under balconies. Send one request and local contractors come back with prices for your balcony.
Describe the job once and get balcony waterproofing quotes from local contractors.
Get Roofing QuotesSigns You Need Balcony Waterproofing
- Stains below. Brown rings or bubbling paint on the ceiling under the balcony, worse after Cape winter rains or Highveld storms.
- Loose or hollow tiles. Water trapped under tiles lifts the adhesive and grout.
- Ponding. Water that sits for hours instead of running to the drain or spout.
- Cracks at the wall junction. Gaps where the floor meets the wall or balustrade let water in.
What the Work Includes
- Inspection. Checking falls, drains, tile condition and the wall upstands.
- Preparation. Cleaning, crack filling and priming, or lifting tiles where the membrane must go under them.
- Falls and screed. Re-screeding low spots so water runs to the outlet.
- Membrane. Applying the system up the walls and into the drain outlet, not just across the floor.
- Finishing. Re-tiling or a trafficable top coat, then sealing joints and the balustrade fixings.
Materials and Methods
- Under-tile cementitious or liquid membrane. Used when tiles are lifted and relaid. Hidden and long-lasting if detailed well.
- Clear or tile-friendly sealers. Can slow minor leaks on sound tiles, but rarely fix a failed slab.
- Polyurethane coating. Flexible, walkable and suited to open balconies without tiles.
- Torch-on. Common on larger balconies and roof decks.
Repair or Redo?
A small leak at a drain or wall joint can often be repaired locally. If tiles are loose across the whole deck or the screed holds water, a full strip and re-waterproof usually lasts longer than repeated patching. For flat roofs that are not balconies, see flat roof waterproofing.
Balcony Waterproofing Prices
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Cementitious waterproofing | About R140 per m² |
| Liquid membrane | R150 - R350 per m² |
| Polyurethane coating | R350 - R500 per m² |
| Torch-on membrane | R250 - R500 per m² |
| Surface repairs and priming | R30 - R60 per m² |
| Screed to fix ponding | R60 - R100 per m² |
| Parapet or upstand wall waterproofing | R3,000 - R8,000 |
Prices JUST UPDATED. Indicative ballpark figures in rand, rounded, based on typical South African market rates. They are not our prices or quotations, and no contractor is bound by them. Ask whether VAT is included, and check what each quotation covers, such as scaffolding, rubble removal and call-out fees.
For a fuller breakdown, see the Roof Waterproofing Cost guide.
Get prices for your roof rather than a range. Send one request, with no obligation.
Get Roofing QuotesWhat Affects the Price
- Tiles on or off. Lifting and relaying tiles adds labour and tile costs.
- Balcony size and shape. Small balconies often have a minimum charge, and corners and steps take longer.
- Access. Upper-floor balconies may need scaffolding or extra safety measures.
- Condition of the slab. Cracks, ponding and rotten screed need fixing before any membrane goes down.
How Getting Quotes Works
- Request. Tell us the work, your area and how to reach you. Photos help.
- Match. Your request goes to local roofing contractors suited to the job, with your permission.
- Quote. Contractors contact you, inspect if needed and give a written price.
- Compare. Check scope, materials, warranty and payment terms side by side, then hire one or nobody.
Balcony Waterproofing FAQs
Can a balcony be waterproofed without removing the tiles?
Sometimes. A penetrating sealer or coating can help with minor leaks, but if water is already under loose tiles, lifting them is usually needed.
How long does balcony waterproofing take?
A small balcony coating can be done in a day or two, while strip, screed and re-tile jobs take longer because each layer needs time to cure.
Who pays in a sectional title complex?
It depends on the body corporate rules and whether the balcony is common property or exclusive use. Check with your managing agent before booking work.
Is the drain outlet part of the job?
It should be. Many balcony leaks start where the membrane meets the drain, so ask contractors how they will seal it.
Related Services
Describe your balcony once through Roof Repairs South Africa and let local waterproofing contractors send you their prices to compare.
Roof Repairs South Africa is a lead-generation and quote-comparison service. We do not carry out roofing work and we do not employ roofers. Work is quoted and carried out by independent contractors, and your agreement is with the one you choose. Get a written quotation, check insurance and workmanship warranties, and avoid paying the full amount upfront.
Balcony Waterproofing. Describe what you need once and get the best quote, fast.
Get Roofing QuotesGet the Best Quote, Fast
Keep it brief. Say what needs doing, where the property is and how to reach you. Your enquiry is passed only to roofing contractors suited to the job, and you decide whether to go ahead.
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