
Waterproofing & Roofing Services in Bay of Plenty
Waterproofing Services
Using quality brands such as Waterproofing Systems, Ardex, Allco and Nuralite, we can replace, supply and fit all the waterproofing needs you may have for your roof or other areas on the structure. Ask us where waterproofing will be most beneficial for your home or business.
Waterproofing
What we waterproof
Alpha Waterproofing lays membranes on almost any surface that has to keep water out, on homes and on commercial buildings across Tauranga and the Bay of Plenty.
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.

Approved applicators
We are approved applicators for Viking, Nuralite, Ardex, Sealco, Cohe and Special Finishes membrane systems.






Sheet and liquid membranes, and the brands we use
Most waterproofing membranes are either sheets or liquids. Sheets such as Butynol (a synthetic rubber made in New Zealand by ARDEX), TPO and vinyl come in rolls and are laid and joined on site. Liquid membranes are applied on site and cure into a seamless, fully adhered layer that follows curves, plant stands and penetrations. Which suits depends on the surface, how it is used and your budget, and we will explain the choice.
On recent jobs we have used WPS Durotuff TPO from Waterproofing Systems, Ardex 615 TPO and Butynol from Ardex, Sealco's Dekmaster vinyl and TPO, and liquid membrane systems, as well as products from Allco and Nuralite. Whatever the membrane, the goal is the one set by clause E2 of the Building Code: buildings must provide adequate resistance to penetration by, and the accumulation of, moisture from the outside.
The work is done by a qualified team. Les Hepworth, who owns Alpha, is a Licensed Building Practitioner (BP104443) with a Roofing licence covering membrane, torch-on and liquid membrane roofs, the team holds national certificates in membrane roofing and waterproofing, and Alpha is Totika accredited.
Recent work
Waterproofing jobs from our files
Not every job is a roof or a deck. These are some of the other things we have waterproofed. There are more in the project gallery.
Liquid membrane system to a water feature /fountain

Liquid membrane system applied over existing membrane to internal box gutter

Grey Butynol to commercial building internal box gutter Tauriko

Black Butynol to wheelchair access ramp Te Puke

How a waterproofing job runs
Free on-site inspection and quote
Every waterproofing project is different, so we look at it first and give you a free quote that says exactly what work is required.
The right membrane for the surface
We recommend a sheet or liquid membrane that suits the surface, how it is used and your budget, and explain why.
Measure, apply and seal
Our trained team does the work on the time and budget agreed, with every technician trained in height safety and carrying a site safety card.
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.
Frequently asked questions
What can you waterproof?
Roofs, decks, balconies and ramps, basements, internal box gutters and water features, plus leak repairs and joint sealing. Each has its own page: membrane roofs, decks and balconies and basement tanking.
Should I use a sheet or a liquid membrane?
Sheets suit large, simple areas and long service lives; liquids suit awkward shapes, lots of penetrations and recoating a sound existing membrane. We recommend one after looking at the job.
Do you work on new builds and existing buildings?
Both. We waterproof new construction for builders and owners, and repair or recoat existing roofs, decks and gutters.
Are you licensed and qualified?
Yes. The owner is a Licensed Building Practitioner with a Roofing licence (BP104443), the team holds national certificates in membrane roofing and waterproofing, every technician is trained in height safety, and we are Totika accredited.
How much will it cost?
Every waterproofing project is tailored to the job, so time and price vary. We offer a free on-site inspection and quote so you know exactly what work is required. Call 027 259 9012.
Our other services
Bay Of Plenty's Commercial & Residential Waterproofing Specialists.

Membrane Roofing
For waterproofing your roof, we use sheet- and liquid-reinforced membranes from proven durable materials and methods such as Butynol, TPO, Two Layer Torch-On's and Elastomeric Liquid membranes.Read more
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.Read more
Decks and Balcony Membrane
By adding on a membrane, you can extend the life of your deck or balcony as well as improve the look of it as well.Read more
Leak Inspection
We also offer an additional leak inspection and detection service to help keep you dry.Read more
Sealing
If you have had any tilt slab expansions or joint installations recently, those pieces may not have been sealed yet like the rest of the structure.Read more
Talk To Us Today To Discuss How We Can Solve Your Roofing & Waterproofing Issues.
Waterproof your roof, deck or basement today.
Free quote and inspection
Contact us
Talk to us now on
027 259 9012or leave a message using the form below
- Tauranga, Bay of Plenty
- les@alphawaterproofing.co.nz
