
We specialise in two types of deck waterproofing:
- the installation of an all-in-one membrane where the actual waterproofing sheet also provides the deck’s finished surface with its aesthetics and grip underfoot; and
- the installation of a single-purpose waterproofing membrane on top of which a floating deck is built afterwards. A modern floating deck structure is usually installed on adjustable pedestal supports and the surface finish is either timber planks or pavers.
Decks are critical when it comes to waterproofing and have proven to be some of the most heavily scrutinised areas by Council. Our expertise ensures key junctions such as door thresholds, balustrades, parapets and drainage outlets are waterproofed to industry best-practise standards which ensures not only compliance but – more importantly – permanent watertightness.
Unlike most flat roofs and below-ground basements which can’t be seen, a deck membrane used as a finished surface is seen every day by the building owner so it’s important that the surface finish is pristine. To achieve this, we distinguish ourselves from our competitors through the extra time and care that goes into the deck substrate’s preparation, whether that’s extra grinding of concrete or sanding of plywood.
Our installers have nationally recognised qualifications in the form of NZQA’s National Certificate in Membrane Roofing and/or LBP (Licensed Building Practitioner) certification. Some of our membrane suppliers also have their own comprehensive licensing programmes which our team members have all attended and passed.


Read about a membrane decking job we did recently on our Case Studies page.

