Basement Waterproofing
Basement waterproofing here rarely involves an actual basement. It is usually a garage cut into a slope, a cellar, or a lower ground floor with earth against one wall, and the water is far more often surface water than groundwater.
Request a Quote
Tell us what the water is doing. We come out free, find where it is getting in, and quote in writing.
A deposit secures your booking and materials, with the balance due on completion.
Our Process
We look at your downpipes, falls and paving before your walls. On below-ground work that ordering is what saves people the most money.
- 1Free site inspection, outside first.
Downpipes, falls, paving, drainage, and where the earth actually sits against the structure.
- 2Written finding and quote.
Drainage correction where that is the fix, external treatment where the face can be reached, and an honest conversation where neither is possible.
- 3The work
in the order that makes the water go away before anything tries to hold it back.
- 4Follow-up and guarantee.
Fred phones after the first serious wet spell. Written, minimum 2-year guarantee.

Why Choose TurboMax
We look at your downpipes before we look at your walls. On below-ground work that ordering saves people the most money, and it is the opposite of how this service is usually sold.
Fred inspects and quotes personally and will tell you when the honest answer is that a room cannot economically be made habitable, rather than selling you three attempts at it. He follows up after the first serious wet spell rather than waiting for the call.
Written, minimum 2-year guarantee, with extended guarantees available on request, and a 10-year service guarantee where the work is maintained by us on an agreed cycle.
What Our Customers Say
Verbatim reviews from Google, alongside photographs of basement waterproofing we have actually done. No stock imagery.

Fred is a man of his word. The work they did on our roof was on time and good quality.

Repaired some leaks, redid the waterproofing and sprayed my entire roof with liquid rubber in 2 days at a reasonable price. They also guarantee their work for 2 years.

Run by a hands-on owner who impressed with his honesty and integrity. After the first rains, he contacted me to enquire about the work.

I received an extremely professional and friendly service. I was provided with expert advice throughout the project, which was completed well within time and under budget.
Excellent, professional, well-priced work. And a completely hassle-free process! 6/5. Thanks Fred!
Thank you TurboMax Waterproofing for your service and after service. I can definitely recommend your professional service.
Areas We Serve
Based in Kuils River, covering Greater Cape Town, the northern suburbs, the Helderberg, the Winelands and the Overberg. Each area has its own page for what fails there and why.
Frequently Asked Questions
Straight answers, including the ones that talk us out of a bigger job.
What does basement waterproofing cost?
It depends entirely on what is causing the water. Correcting drainage, extending a downpipe or fixing a fall is at the low end and solves a real share of the cases we see. External treatment where the wall can be reached sits in the middle. Full excavation of a buried structure is at the top, and the digging and reinstatement usually cost more than the waterproofing.
My garage is built into the slope and the back wall is always wet in winter. Is that groundwater?
Usually not. It is far more often rainwater that was never taken away: a downpipe discharging above that wall, paving falling towards the house, or a subsoil drain that has silted up. We check all of that before proposing anything, because it is a fraction of the cost of the alternative.
Can you seal it from the inside?
We will be honest that internal sealing of a wall under water pressure has a poor record, because the pressure works to push the treatment off the wall rather than onto it. Where the outside face can be reached, that is where it should go. Where it cannot, managing the water is usually more reliable than trying to hold it back from the dry side.
Two contractors have already sealed this wall and it is still wet. Why?
Almost always because it was treated on the inside. Each coating held through the drier months and let go under pressure in the wet ones. It is the most common history we hear on below-ground work, and the starting point is finding out where the water is arriving from rather than adding a third layer.
Can I turn my cellar into a habitable room?
Sometimes, and sometimes the honest answer is that it will always be a store. It depends on whether the outside face can be reached, whether there is a route to drain water away, and how much is being asked of the space. We will give you a straight assessment rather than sell you an outcome we do not believe in.
Related Services
Free inspection, a written quote, and no obligation
Fred will tell you what is actually wrong before there is anything to decide.
Get a Free Quote
Free site inspection, honest diagnosis, written quote.
A deposit secures your booking and materials, with the balance due on completion.
