We install high-performance below ground tanking systems in Auckland, protecting basements, retaining walls, lift pits, and foundations from groundwater ingress and long-term moisture damage in all soil conditions.
We provide expert below ground tanking services across Auckland, helping to safeguard your property against water intrusion at the foundation level. Tanking is the process of applying a waterproof barrier to below-ground surfaces, such as basements or retaining walls, to prevent water seepage and structural damage.
We work with homeowners, builders, and developers to design and install fully integrated tanking systems tailored to site conditions, building design, and New Zealand Building Code (NZBC) compliance.
Our systems are ideal for Auckland’s clay-heavy and water-retentive soils, where hydrostatic pressure and groundwater levels can pose a serious risk to property integrity.
Our team have the experience needed to offer befit solutions for your commercial or residential new build.
Below ground tanking is predominantly used in areas such as retaining walls, tunnels, basements, and foundations. The approach is similar to that of sheet membranes.
Installed on the external face of walls and foundations to block water from entering. This is the most effective and durable form of tanking.
Applied on the internal face when external access is limited—commonly used in remedial or retrofit projects.
Provides a watertight membrane beneath the foundation slab to prevent rising damp or capillary moisture transfer.
We work with torch-on, self-adhesive, and spray-applied membranes depending on access, surface type, and performance requirements.
Specialist systems designed to handle constant water pressure and protect below-grade areas in both residential and commercial builds.
Includes installation of protection boards, drainage mats, and geotextiles to extend membrane life and redirect water flow.
✔ Experienced Installers: Licensed professionals with deep knowledge of foundation waterproofing.
✔ Compliant Systems: All tanking meets NZBC Clause E2 requirements for external moisture protection.
✔ Premium Materials: We use proven membrane systems such as bituminous torch-on, bentonite clay, and high-performance polymers.
✔ Tailored for Auckland Soil Conditions: Designed to withstand local water table levels and soil movement.
✔ New Builds & Retrofits: We provide solutions for both new construction and remedial work on existing structures.
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Below ground tanking involves applying a waterproof membrane to foundations, walls, or slabs to block groundwater and moisture from penetrating the structure.
In most Auckland areas with high groundwater levels or poor drainage, tanking is essential to protect against water damage and meet compliance.
We offer torch-on bitumen, self-adhesive sheet membranes, spray-applied liquid membranes, and bentonite systems depending on project needs.
Yes. We specialise in both new construction and retrofit tanking, even in tight-access or occupied sites.
With proper installation and protection, most tanking systems last 25–40 years and come with warranties for peace of mind.
Tanking is highly effective when combined with proper site drainage and design. We assess and recommend the right combination for total protection.
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