We specialise in waterproofing the exterior of parts of a building below the ground such as basements, cellars, lift shafts and even tunnels. Below-ground waterproofing (AKA tanking) is arguably the most critical, because once the soil back-filling has taken place after job completion, it’s incredibly time consuming and expensive to dig out again in the event of a leak.
Surface preparation is paramount, as is the discipline required to ensure the work area is dry and clean – it’s easier said than done, especially at the lowest point of a building site after sustained periods of rain. Our attention to preparation is our strength as we believe it’s critical to ensuring 100% watertightness. We stick to specification and work closely with suppliers, especially when it comes to the waterproofing of structures that are relatively deep below the ground where increasing levels of hydro-static pressure will try to force ground water inside the building.
Our installers have nationally recognised qualifications in the form of NZQA’s National Certificate in Membrane Roofing and/or LBP (Licensed Building Practitioner) certification. Some of our membrane suppliers also have their own comprehensive licensing programmes which our team members have all attended and passed.
We bring years of below ground experience and understand no project is to big or small not to get right first time.
Read about a recent below-ground tanking job on our Case Studies page.