Roof Slab Maintenance & Waterproofing in Moreleta Park, Pretoria

Location: Moreleta Park, Pretoria
Service: Roof slab maintenance and waterproofing (ArmTec system)

A flat concrete roof slab in Moreleta Park had reached the end of its waterproofing life. The homeowner, managing the property through Remax, called Eco Seal Coating Specialists for professional concrete slab waterproofing — to inspect a slab that was no longer holding water out and to renew it before the winter rains arrived.

The problem

Flat roof slabs take a hard beating from the Highveld sun, and this one showed every year of it. The existing waterproofing membrane had delaminated and cracked, lifting away from the substrate in sheets. Along the joints the old system was failing and starting to separate, opening a direct path for water to sit and soak in. Ponding was the clearest sign of trouble. Water was pooling on the slab instead of draining, because the outlet was no longer moving water off the roof correctly. Cracks had also opened up on the parapet wall, and around the drainage outlet the substrate had deteriorated badly, leaving a hollow, damaged section that had to be rebuilt before any new coating could go down.

The Eco Seal solution

As an approved SealPro applicator, Eco Seal installed the ArmTec HyperFlex system to fully renew and reseal the slab:

1. Open and correct the outlet. The drainage outlet was cleared and reworked so water flows off the slab correctly, eliminating the ponding at its source.
2. Prep and prime the substrate. The full 30 m² surface was cleaned back to a sound base and primed with Penetrar to bond the new system to the concrete.
3. Reinforce the cracks and joints. Cracked and delaminated joints, along with the parapet wall, were strengthened and bridged with StretchSeal membrane to absorb movement.
4. Build the reinforced ArmTec membrane. HyperFlex was applied and embedded with ArmTec mesh across the slab, creating a tough, seamless, fully reinforced waterproofing layer.
5. Seal with the top coat. The system was finished with HydroSeal HF, a flexible, UV-stable topcoat that protects the membrane and keeps the slab watertight for years.

The result

The slab now carries a clean, unbroken waterproof membrane with proper fall to the corrected outlet, so water drains instead of pooling. The joints and parapet are reinforced, the damaged outlet area has been rebuilt, and the UV-stable finish means the homeowner will not be looking at cracked, flaking waterproofing again any time soon — the same waterproofing we carry out across Moreleta Park.

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

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