Waterproofing & Roofing Services in Bay of Plenty

Basement Tanking

To create a waterproof layer in your basement to act as a barrier to incoming moisture, we use Two Layer Torch-On membrane systems, Peel and stick Bitumen Membranes, Single Ply Membranes, Bentonite and various water stop systems. Ask us which one is the best choice for your basement.

Get a free quote 027 259 9012

Basement waterproofing in Tauranga

A basement wall sits against damp ground all year. The Building Code, in clause E2, says walls, floors and structural elements in contact with, or in close proximity to, the ground must not absorb or transmit moisture in quantities that could cause undue dampness or damage. Tanking is the membrane that keeps that moisture out of a basement or below-ground wall, and it is what most people mean when they search for basement waterproofing.

Tanking goes on while the outside of the wall is still exposed, before backfilling, and it works together with the drainage behind the wall: appraised below-ground systems such as Nuralite's call for a perforated subsoil drain at the bottom of the wall. The photographs here show black sheet tanking on a basement wall with the trench still open, the stage at which the work is done. There are more in our project gallery.

Installer working in an open trench beside a basement wall covered in black sheet membrane

Your options

Five tanking systems

Two Layer Torch-On membrane systems

Two layers of polymer modified bitumen sheet, torched on, like the Nuralite torch-on systems we are approved to apply and also lay on membrane roofs.

Peel and stick Bitumen Membranes

Self-adhesive modified bitumen sheets, such as the Bituthene membrane in Nuralite's appraised below-ground range, which go on without a flame.

Single Ply Membranes

Flexible single sheets such as Butynol, which ARDEX makes in New Zealand and which has been used for tanking as well as roofing for more than 50 years.

Bentonite

Systems based on sodium bentonite clay, such as Volclay, used below ground to protect basements against water penetration and water vapour from the ground.

Water stop systems

Strips set into the construction joints in concrete walls and floors, where one pour meets the next, so water cannot track through the joint.

Membrane Specialists

From new constructions to commercial and domestic projects, our waterproofing services can cover all the surfaces you need. By using high-quality membranes specially designed to be durable and long-lasting, we can help protect your investments from the harsh weather and potential water damage.

Membranes systems can vary in type and have different benefits for each. The most common types you will see are sheets and liquid made from different materials. Ask us about all the different types we carry and which one may be the best fit for you.

Our specially trained team can measure, apply and seal your projects quickly, on-time and within budget. Let us know what you need to be waterproofed and we'll be happy to do it for you. If you have any questions about other waterproofing methods or our additional services we provide, do not hesitate to call and ask. We'd love to talk with you and help you find the best service for your needs.

Black sheet membrane on a basement retaining wall, with the trench still open

How a tanking job runs

Free on-site inspection and quote
We look at the wall: what it is built from, how deep it goes, the ground and drainage around it and the stage of the build. You get a free quote that says exactly what work is required.
Choose the tanking system
We recommend the system that suits the wall, the ground and the build, and explain why.
Tank the wall before backfilling
Our trained team lays and seals the tanking while the wall is still exposed, working with your builder so the drainage and backfill follow straight after.
Finished and guaranteed
We stand behind our workmanship with a warranty.

4 Reasons To Call Alpha Waterproofing

Highly qualified and trained team to handle any job, big or small, with ease.

Ready for your call

Our Tauranga waterproofing staff are ready to take your call now and ensure your job runs smoothly from first call to quoting, job completion and invoicing.

Multiple solutions

We'll provide a range of solutions to suit your budget and preferences we have the team, equipment and experience to provide an option that suits.

We can do your job

No job too big, too small or ugly. We've got the expertise and flexibility to complete any waterproofing job.

Free Expert Advice

Got a waterproofing related question? Call our Bay Of Plenty waterproofing company with all of your enquiries and we'll give you the expert advise you need free of charge.

Frequently asked questions

What is basement tanking?

Tanking is a waterproof membrane applied to the outside of a basement or below-ground wall, and sometimes under the floor, so moisture in the ground cannot get through the concrete or blockwork into the building. It is the main part of what people call basement waterproofing.

Which tanking system is best?

There is no single best system. Torch-on, peel and stick bitumen, single ply sheets, bentonite and water stops each suit different walls, ground conditions and stages of a build. We recommend one after looking at the job, and we can explain the trade-offs.

When should tanking go on in a new build?

Once the wall is built and before it is backfilled, while the outside face is still open. Talk to us early so the tanking, the subsoil drain at the bottom of the wall and the backfill can be planned in order with your builder.

Do you work for builders as well as homeowners?

Yes. We tank basements on new construction and on existing buildings, for commercial and domestic projects.

Who does the work?

Alpha's team holds national certificates in membrane roofing and waterproofing, and the owner, Les Hepworth, is a Licensed Building Practitioner (BP104443). Call 027 259 9012 to arrange a free on-site quote.

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