Anchor Point Waterproofing in Waterfall, Midrand

Location: Waterfall, Midrand
Service: Anchor point (fall-arrest) waterproofing — StretchSeal System

High above the Mall of Africa, on the flat concrete roof of a commercial building in Waterfall, sat a problem that most people never think about: eighty steel fall-arrest anchor points, each one drilled and bolted straight through the waterproofing membrane. Every anchor was a potential leak. Eco Seal was brought in for specialist flat roof waterproofing — to seal every single one, permanently.

The problem with roof anchor points

Fall-arrest anchor points are essential for safety — no one works safely on a high roof without them. But each anchor is a fixed metal fitting bolted through the roof deck, and the junction where steel meets concrete is exactly where water finds its way in. With eighty penetrations spread across the roof, even a small failure at a handful of them lets moisture track under the coating, lift the membrane, and eventually stain or damage the interior below. The parapet capping and cable brackets added more detail points that needed the same careful attention. Standard flat-roof coatings simply do not flex enough to stay bonded around a rigid, load-bearing anchor that shifts under wind and use.

The Eco Seal solution

As an approved SealPro applicator, Eco Seal used the StretchSeal System — a flexible, high-movement detailing system built for exactly this kind of penetration work.

1. Inspect and prepare. Every one of the eighty anchor bases was cleaned back to sound substrate, with old sealant, dust, and loose material removed so the new coating could bond properly.
2. Prime the details. Each anchor point, bolt, and surrounding concrete was primed to lock down the surface and guarantee adhesion.
3. Seal with StretchSeal and Flex. A flexible StretchSeal detailing coat was worked tightly around each anchor collar, reinforced with Flex where the movement is greatest, forming a continuous watertight seal from the concrete up onto the steel fitting.
4. Dress the parapet and cable line. The parapet capping and cable-bracket junctions were sealed into the same system, tying every detail into one uninterrupted waterproof surface.
5. Quality check. The full roof was walked and every anchor re-checked before handover.

The result

Eighty anchor points, once eighty separate risks, are now sealed into a single flexible membrane that moves with the roof instead of cracking against it. The safety system stays fully functional, the roof stays dry, and the building owner has a waterproofing detail that will hold through Highveld heat and summer storms alike — the same standard we bring to commercial waterproofing and roof repairs across Gauteng.

Contact Eco Seal for a free inspection and quote: 083 309 8164 · www.ecoseal.co.za

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