Waterproofing that keeps the water out for good
The membrane under your tiles is what keeps water out of the structure, not the tiles or the grout. We install certified waterproofing systems across Auckland and back consented work with a PS3 producer statement.
Water damage starts small and ends expensive
Water is patient. It finds the weak point in a membrane, sits in the framing, and works quietly for months before you see anything. By the time tiles lift or a damp smell settles in, the problem is usually in the structure, not on the surface.
Poor waterproofing leads to:
- Structural damage - moisture rots timber framing and breaks down concrete substrates.
- Mould - damp cavities behind tiles are ideal breeding grounds, and that affects the air in the house.
- Tile failure - adhesive bonds let go once water gets underneath. Retiling without redoing the membrane just repeats the problem.
- A renovation-scale fix - when waterproofing fails, the honest repair is a strip-out and rebuild of the wet area. Doing it right the first time costs a fraction of that.
Certified systems for every wet area
We waterproof bathrooms and showers, laundries, kitchen wet zones, tiled decks and balconies, and concrete substrates before tiling. Residential and commercial, new builds and renovations, right across Auckland.
Every job is installed as a complete manufacturer system from suppliers like Ardex, Mapei, Sika and Technokolla, not a mix of whatever was on the shelf. That means:
- Full membrane coverage of floors and walls in wet areas
- Sealed floor-to-wall junctions and reinforced corners, where most leaks start
- Proper detailing around pipes, drains and penetrations
- Correct membrane thickness and full curing time before any tile goes down
Because we do the tiling too, one crew owns the whole wet area. One contractor, one system, no finger-pointing between trades.
Done to code, with the paperwork to prove it
Wet-area waterproofing is required under NZ Building Code clause E3 (internal moisture), and membranes must meet AS/NZS 4858. For consented work, Auckland Council expects a PS3 producer statement from the installer before sign-off.
Dakom Tiling is a PS3 registered author with Auckland Council, a TANZ member, and has been waterproofing and tiling Auckland homes since 2016. Every consented job leaves with its PS3 and a 10-year workmanship warranty.
Before you book
Is waterproofing required by law in New Zealand?
Yes. Under Building Code clause E3, wet areas like tiled showers and bathroom floors must be waterproofed. If your project needs consent, council will want a PS3 producer statement from the installer confirming the membrane was done properly.
What happens if waterproofing is done wrong?
Water gets behind the tiles and into walls and floors, causing rot and mould you cannot see until it is serious. Fixing it means stripping the tiles and rebuilding the wet area from the substrate up, which is why correct installation the first time matters so much.
How long does waterproofing last?
A correctly installed membrane is designed to outlast the tiles over it. Most failures we see come from poor preparation or rushed installation, not the product. Preparation, thickness and curing time decide the lifespan.
What does a PS3 producer statement actually cover?
It is a formal statement to council that the waterproofing was installed by the registered author in line with the consented design and the membrane manufacturer's requirements. Council relies on it when issuing the code compliance certificate, and it stays on the property file.
Which parts of a house need waterproofing?
Any wet area covered by NZBC clause E3: showers and bathroom floors, laundries and kitchens around fixtures, plus exterior work such as tiled decks and balconies, and concrete below ground. The right system differs by area, which is why each service page here covers its own build-up.
Get your waterproofing quoted properly
Tell us about the project and we will book a free site visit. Clear, itemised quote, no obligation. Call 021 818 013.