
GARAGE WATERPROOFING
For many New Zealanders, a garage is more than just a place to park a vehicle. It often functions as a workshop, a gym, or a secure storage area for valuable assets like tools, machinery, and family belongings. However, garages frequently built into banks or situated at ground level with minimal insulation are susceptible to moisture ingress.
Unprotected concrete slabs and block walls slowly absorb groundwater from the surrounding soil. This continuous dampness causes rust and corrosion on tools or vehicles, leads to unsightly efflorescence on walls, and contributes to the structural deterioration of concrete over time.
At Sahara Waterproofing, we provide specialised systems designed to permanently stop water entry, protecting both the building structure and your valuable assets.

Get in touch today!​
Call: ​​​0212 724272
Advanced Protection for Concrete Slabs & Block Walls
Our team offers the technical expertise to apply the correct solution, whether addressing a leaking concrete block wall on a sloping section or moisture rising through a cold concrete floor.
As Licensed Building Practitioners (LBPs), we inspect each site to determine the most effective method for substrate protection:
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Waterproofing Garage Walls: In structures where a garage backs into a clay bank or hillside, earth pressure can force moisture through porous concrete blocks. We apply heavy-duty positive-side membranes during construction. For existing garages, we use advanced negative-side crystalline systems from Sika and Ardex to block external water from penetrating the internal space.
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Sealing Concrete Floors: Rising damp through an un-vapour-barriered slab quickly damages flooring, rusts equipment, and delaminates standard paints. We specialise in preparing and sealing concrete floors. This involves using high-spec epoxy moisture barriers and densifiers from brands such as Sika and Bostik, which create a tough, dry surface designed to withstand heavy vehicular traffic.
The Sahara Durability Promise
Preventing concrete degradation in a garage requires a specialist approach. This involves understanding hydrostatic pressure and thorough substrate preparation. Our garage solutions comply with New Zealand Building Code moisture standards and are applied by factory-trained professionals. We support our workmanship with a comprehensive 10-year guarantee.
