That dark tide mark on your walls, the flaking plaster, the salt crystals forming on brickwork, the musty smell that never goes away, that's damp, and painting over it doesn't fix anything. You've probably tried it. The paint bubbles and peels, the stain comes back, and the problem underneath gets worse. Damp proofing treats the source: the mechanism by which water is entering the wall, slab, or foundation. You're in the right place.
What Damp Proofing Problems Do You Have?
In Gauteng, damp problems appear in two main forms. Rising damp occurs when water from the soil travels up through porous brick or block walls by capillary action, you'll see a tide mark on the lower section of external and internal walls, often with white salt deposits (efflorescence), peeling paint, and damaged plaster. The original damp proof course (DPC) has either failed, been bridged by render, or was never installed in older properties. Penetrating damp comes through the face of the wall, driven by rain against exposed brickwork, failed pointing, cracked render, or inadequate cavity construction. It typically appears as wet patches on walls that worsen during or after rain and dry out between wet periods.
Our Damp Proofing Services
We offer rising damp treatment using chemical injection damp proof courses, a specialised silicone-based compound is injected into the mortar bed at the base of the wall under pressure, creating a new moisture-resistant barrier that stops capillary rise. The old plaster, which is salt-contaminated and will continue to deteriorate, is stripped and replaced with a sand-cement render incorporating a waterproof additive that resists hygroscopic salt damage. For penetrating damp treatment, we diagnose the specific entry point, failed pointing, cracks in render, porous face brick, or failed external sealant, and treat it with masonry sealers, repointing, render repair, or a combination of these, depending on the specific wall construction.
Damp Proofing for Gauteng Homes
Gauteng's housing stock includes a large number of pre-1980 brick homes in Johannesburg south, the West Rand, and older Pretoria suburbs where original DPCs, if they exist at all, are slate, bitumen felt, or tar-coated hessian, all of which fail over time. Modern homes can also develop damp problems where renders have cracked, flashings have failed, or external paths and paving have been raised above the DPC line. We work across all Gauteng service areas, Johannesburg, Pretoria, East Rand, West Rand, North Rand, South Rand, Centurion, and Midrand.
Why Choose Logiline for Damp Proofing
Damp diagnosis matters as much as the treatment. Applying a rising damp injection system to a wall that actually has penetrating damp wastes money and doesn't fix the problem. We assess the pattern of dampness, the wall construction, the external conditions, and the history of the problem before recommending any treatment. We are licensed and fully insured, offer a free on-site assessment, and provide a written quotation and Workmanship Warranty on all work. As a trusted waterproofing company in Gauteng, we treat the source, not just the surface. Call 081 016 3479 today.
Further reading: waterproofing, building waterproofing materials and techniques.
