Bitumen is the most proven waterproofing system for flat roofs and below-ground applications. It handles sustained water pressure better than any coating system and lasts 15-20 years when applied correctly. We apply bitumen membranes across Gauteng, on flat-roof homes around Sandton City and the northern suburbs, and on commercial flat roofs along the Centurion N1 strip. Call 081 016 3479.

When You Need Bitumen Waterproofing

Bitumen waterproofing is specified for flat and low-pitch roofs with ponding water, basement slabs and walls under significant groundwater pressure, podium decks and parking decks, bridge structures and retaining walls below ground. It’s the system of choice when you need proven performance under sustained water exposure and hydrostatic pressure, conditions common across Gauteng’s flat-roofed commercial and residential stock.

Our Bitumen Waterproofing Process

Torch-on application: substrate is cleaned and primed with a bitumen primer. APP or SBS modified bitumen membrane rolls are heat-welded to the primed surface with a propane torch, melting the underside coating to create a fully bonded lap with adjacent sheets overlapped 100mm minimum. Upstands are turned up at least 300mm. Cold-applied systems use self-adhesive or brush-applied bitumen emulsion, suited to areas where open flame isn’t permitted.

Cost of Bitumen Waterproofing in Gauteng

Bitumen waterproofing cost depends on area, existing substrate condition, whether stripping is required, and the membrane specification (thickness, SBS vs APP). Free on-site assessment and written quote.

Why Choose Logiline for Bitumen Waterproofing

Licensed and insured. Workmanship Warranty. We have been applying bitumen membranes across Gauteng for years and know the common pitfalls, inadequate priming, cold-weather application, insufficient laps, that cause early failure. We apply correctly, every time.

Common Questions

What is the difference between torch-on and cold-applied bitumen?

Torch-on uses a propane flame to heat-weld the membrane to the primed substrate. Cold-applied uses brush-applied emulsion or self-adhesive membrane, suitable where open flame is not permitted. Torch-on provides a better bond for most applications.

Does bitumen waterproofing need a primer?

Yes. Bitumen primer is essential before membrane application. It improves adhesion and reduces the risk of delamination. Skipping the primer is one of the most common causes of early bitumen membrane failure.

Can bitumen waterproofing be applied over existing bitumen?

Only if the existing membrane is fully bonded and intact with no delamination. If it is lifting or blistered, it must be stripped first. We assess the existing condition before recommending an approach.

Need bitumen waterproofing in Gauteng? Call 081 016 3479 for a free flat roof or basement assessment.

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Further reading: waterproofing, building waterproofing materials and techniques.

Bitumen Waterproofing in Gauteng, Heavy-Duty Flat Roof and Below-Ground Protection