Flat Roof Waterproofing in Bloemfontein
Flat roofs fail more often than pitched roofs for one reason: water sits on them. We waterproof concrete decks and flat roofs with torch-on and liquid membrane systems, prepared and applied properly so the system lasts, not a quick silver coat over a failing surface.
Get a Free Quote
Reviewed by F.C. Schlebusch, Owner & Lead Contractor
Last reviewed: August 2026
What's Included
- Torch-on membrane systems
- Liquid-applied waterproofing membranes
- Surface preparation, crack repair and screeds to fall
- Parapet wall and flashing detail sealing
- UV-protective finishing coats
Signs You Need This Service
- Ponding water that stays on the roof days after rain.
- Blistered, cracked or lifting existing waterproofing.
- Damp patches on ceilings under the flat roof.
- Vegetation or moss growing on the roof surface.
- Previous 'quick fix' coatings failing within a year.
Our Process
- 1
Free Consultation
Contact us any time, we'll discuss your project and provide a thorough, detailed, obligation-free quote.
- 2
Planning & Prep
We plan the work carefully, source durable, quality materials (never just the cheapest option), and prepare the site with care.
- 3
Expert Execution
Our team works fast and clean, keeping you updated in a professional and courteous manner throughout.
- 4
Final Walkthrough
We walk the finished work with you against the quote, and nothing is signed off until it meets our standard, and yours.
Frequently Asked Questions
Why does flat roof waterproofing keep failing?
Almost always preparation: coating over dust, damp or unstable surfaces, or ignoring ponding areas. We prepare the substrate properly and fix falls where needed, that's what makes systems last.
Torch-on or liquid membrane, which is better?
Torch-on suits large open decks; liquid systems excel around details, upstands and complex shapes. Many roofs need both, used where each is strongest.
How long will the waterproofing last?
A properly applied system typically lasts 5–10+ years depending on product and exposure, and a UV-protective top coat extends that further.
Can you waterproof over the existing layer?
Only if it's sound. Failed membrane must come off first, waterproofing over a failed layer just hides the problem while damage continues.
What is 'ponding' and why does it matter?
Ponding is water standing on the roof after rain. It degrades any membrane faster and finds every weakness, we correct falls so water actually drains.
Part of our Waterproofing services in Bloemfontein.
Related Services
Need flat roof waterproofing in Bloemfontein?
Get a thorough, detailed, obligation-free quote from Bloemfontein's owner-led, 4.8-star rated team. Quoted properly, done properly, built to last. Open 24/7.