
Decks and Balcony Membrane Services in Bay of Plenty
Decks and Balcony Membrane
Are you looking to extend the life of your decks and balconies while also enhancing their overall appearance? Look no further than our membrane decking service!
Decks and Balcony Membrane
Decks and balconies are often fully exposed to the harsh outdoor elements, leading to wear and tear, water damage, and structural issues over time. By adding on a membrane, you can protect your deck or balcony from the elements while also improving its overall aesthetic.
Our team of expert technicians will work closely with you to assess your specific needs and recommend the best membrane solution for your project. Whether you're looking to repair an existing deck or balcony or install a new one from scratch, we have the knowledge and expertise to get the job done right.

Your options
Sheet or liquid membrane?
Sheet membranes
We offer a wide range of sheet and liquid deck membranes to suit your specific needs. Our sheet membranes are made from durable and flexible materials that provide long-lasting protection against water and weathering, ensuring your deck or balcony stays in top condition for years to come.
Butynol is appraised by BRANZ for decks as well as roofs, and we also lay TPO and vinyl deck membranes, from Ardex 615 TPO at Bowentown to Sealco Dekmaster vinyl at Waihi Beach.
Liquid membranes
For those looking for a more flexible and customizable solution, our liquid deck membranes offer a seamless and fully adhered option that conforms to any deck or balcony shape or size. These membranes also come in a variety of colors and textures, allowing you to customize the look of your outdoor space to your exact specifications.
A liquid membrane can also renew a tired deck surface that is still sound underneath, as the before and after photographs further down this page show.
What makes a deck membrane last
A deck membrane is usually the only layer between the weather and the room or framing below, so the details decide how long it lasts: enough fall for water to drain, upturns taken high enough at walls and doors, outlets and overflows big enough and kept clear, and a structure stiff enough not to flex. BRANZ Bulletin 583 lists insufficient membrane upturn, undersized outlets, missing overflows and decks that deflect among the common problems it sees, and advises inspecting a membrane deck every year because there is no second line of defence.
When we look at an existing deck or balcony we check those same points before recommending a repair or a new membrane. If water has been getting into the framing, BRANZ recommends the deck structure is inspected by a building surveyor before it is covered again, and we will tell you when we think that is needed. If you are not sure where the water is coming from, start with a leak inspection.
Recent work
Decks and balconies we have waterproofed
Black Butynol in Omokoroa, Ardex 615 TPO at Bowentown and Te Puna, WPS Durotuff TPO at Papamoa Beach and Sealco Dekmaster vinyl at Waihi Beach: these are deck, balcony and ramp jobs from our own files. There are more in the project gallery.
Black Butynol to Deck/balcony area Omokoroa

Ardex 615 TPO to deck/balcony area Bowentown

WPS Durotuff TPO to Deck/balcony area Papamoa Beach

Sealco Dekmaster vinyl membrane to deck/balcony area Waihi Beach

Black Butynol to wheelchair access ramp Te Puke

WPS Durotuff TPO to deck/balcony area Papamoa

A liquid membrane over a tired deck
So if you're looking to extend the life of your decks and balconies while enhancing their overall appearance, contact us today to learn more about our membrane decking services and to schedule your consultation.


Decks and Balcony 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.

How a deck or balcony job runs
Free on-site inspection and quote
We look at the deck or balcony, what is under it, how it drains and where it meets the walls, doors and balustrade. If water is already getting into the room below, we start with a leak inspection. Then you get a free quote that says exactly what work is required.
Choose the membrane and finish
We talk through sheet and liquid membranes, colours and textures, and recommend the one that suits how you use the space and your budget.
Measure, apply and seal
Our trained team lays and seals the membrane on a new deck or over a prepared existing one, working to the time and budget agreed. The same crews lay membrane roofs, so a deck over a living area is handled as the roof it is.
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
How long does a deck membrane last?
That depends on the membrane, the fall and how hard the deck is used. BRANZ expects Butynol systems to last at least 20 years in normal conditions with proper maintenance. Whatever the membrane, check it every year for damage, keep outlets clear, and protect it from sharp objects and heavy point loads.
Can you put a membrane over my existing deck?
Often, yes. We repair existing decks and balconies as well as waterproofing new ones. A liquid membrane can go over a sound, prepared surface, as in the before and after photographs on this page. If the deck or the framing under it has failed, we will say so and quote what is needed.
What colours and finishes are there?
Liquid deck membranes come in a variety of colours and textures, and sheet membranes come in a smaller range. Our jobs include black Butynol, grey and white TPO and a speckled vinyl finish. We bring samples of the options that suit your deck.
Do you waterproof balconies and ramps as well as decks?
Yes. We waterproof balconies over living areas, long walkways and access ramps, including a wheelchair access ramp in Te Puke finished in black Butynol.
Which areas do you cover?
We are based in Tauranga and have waterproofed decks and balconies in Papamoa, Omokoroa, Te Puna, Bowentown and Waihi Beach, across the wider Bay of Plenty. Call 027 259 9012 for a free on-site quote.
Our other services
Bay Of Plenty's Commercial & Residential Waterproofing Specialists.

Waterproofing
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.Read more
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
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
