How much does waterproofing cost in Johannesburg?
Oaks waterproofs a flat roof (torch-on) at R420 per m² and a balcony or parapet at R380 per m². For a whole job, a leak repair and reseal starts from R2,200, a balcony from R9,000, a flat-roof section from R9,500 and a full flat roof from R42,000. Waterproofing comes with a 5-year warranty. Prices are in rand, at northern-suburbs rates.
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Tell Oaks where the water is getting in and your suburb. The price you get is a starting price from the list, and Oaks confirms the fixed price in a quote.
Or WhatsApp us: 081 372 4079
What are Oaks' waterproofing prices?
These are the prices on Oaks' own price list, updated October 2026. Some jobs are priced by the area or length treated, and some for the whole project.
| Job | Price |
|---|---|
| Flat roof, torch-on | from R420 per m² |
| Balcony or parapet | from R380 per m² |
| Box gutters, per metre | from R190 |
| Crack and joint, per metre | from R150 |
| Job | Price |
|---|---|
| Leak repair and reseal | from R2,200 |
| Waterproofing, balcony | from R9,000 |
| Waterproofing, flat-roof section | from R9,500 |
| Waterproofing, full flat roof | from R42,000 |
A price marked 'from' is where that kind of job starts. Oaks confirms the final fixed price on a free quote.
How is the price worked out?
For jobs priced by area or length, the price is the size of the job multiplied by the list rate. The examples below use made-up sizes to show the maths. They are examples, not quotes. Oaks confirms the measurements when it quotes.
Example 1: a flat roof and its box gutter
The list also has whole-job prices, such as a flat-roof section from R9,500, so the quote may be set up either way.
| What | List price | Amount |
|---|---|---|
| 40 m² of flat roof, torch-on | R420 per m² | R16,800 |
| 12 m of box gutter | R190 per m | R2,280 |
| Example total | R19,080 | |
Example 2: sealing cracks and joints
A leak repair and reseal is listed separately, starting from R2,200.
| What | List price | Amount |
|---|---|---|
| 15 m of cracks and joints | R150 per m | R2,250 |
| Example total | R2,250 | |
What makes waterproofing cost more or less?
These are the things that change what any waterproofer quotes. Oaks confirms how they affect your job in its quote.
- The size of the area. Most of the list is priced per m² or per metre.
- The state of the old surface. A roof with an old, split or lifting waterproof layer needs more preparation than a sound one.
- Where the roof meets walls. Every metre of wall edge, parapet and upstand has to be sealed too.
- Things that go through the roof. Skylights, vents, pipes and solar panel mounts all need sealing around them.
- Drainage. Outlets and box gutters must carry water away, so blocked or damaged ones add work.
- Height and access. A second-storey flat roof takes more to reach than a garage roof.
- The weather. Waterproofing needs dry weather, and Johannesburg's summer storms can move a start date.
- Extra problems found on the day. Oaks gives a new quote for extra work before doing it.
What is included when Oaks waterproofs?
- A 5-year warranty on waterproofing.
- Fixed price upfront.
- Booked within 7 days.
- A photo report when the job is finished.
- A workmanship guarantee.
- A quote is valid for 14 days.
- A 50% deposit before work starts, and the balance when the job is done.
Whoever you hire, ask for the warranty in writing and ask what it covers.
Do these prices apply in my suburb?
The list prices are northern-suburbs rates: Bryanston, Sandton, Fourways, Randburg, Midrand and Rosebank, and nearby suburbs such as Sunninghill, Woodmead, Lonehill, Rivonia and Midstream Estate. If your suburb is not named, send it on WhatsApp to 081 372 4079 and ask.
How do I get a price for my roof or balcony?
- Open the Instant Price form.
- Say what needs waterproofing and give your suburb.
- Oaks sends a fixed price in a quote, valid for 14 days.
- Oaks books the job within 7 days.
You can also send a photo of the job and your suburb on WhatsApp to 081 372 4079. The price list says Oaks replies with a flat price, usually within the hour.
Questions and answers
How much does flat roof waterproofing cost per m²?
Oaks' list price for a flat roof (torch-on) is R420 per m². A balcony or parapet is R380 per m². Oaks confirms the area and the final fixed price in its quote.
Can a leak be repaired without redoing the whole roof?
Often a smaller job is listed: a leak repair and reseal starts from R2,200, and a flat-roof section starts from R9,500. A full flat roof starts from R42,000. Which one fits depends on how far the damage runs, and Oaks confirms that in the quote.
Is there a warranty on waterproofing?
Yes. Oaks gives a 5-year warranty on waterproofing. Ask for the terms in writing with your quote.
How soon can the work start?
Jobs are booked within 7 days. After you accept your quote, we contact you to agree a date.
Jobs by Oaks
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A flat roof fully coated, with solar panels and a skylight. -
A flat roof half coated while the work is under way. -
A sealed flat roof with a skylight and foil duct beside a brick wall.
Related pages and guides
Last updated: 29 October 2026. Prices checked against the Oaks price list, October 2026.
Get your instant price
Tell Oaks where the water is getting in and your suburb. The price you get is a starting price from the list, and Oaks confirms the fixed price in a quote.
Why Choose Oaks Coatings & Finishes?
Fixed price upfront
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Booked within 7 days
Your job is booked within 7 days.
Photo report on completion
When the job is done, you get a photo report.
Workmanship guarantee
We guarantee our workmanship.
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Our Promise
Booked within 7 days, a photo report when the job is done, and a workmanship guarantee.
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Or WhatsApp us: 081 372 4079