Waterproofing systems
Vinyl deck waterproofing
The core system: a single-ply 60 mil PVC sheet that is the waterproofing and the finished floor at once.
Tile deck systems
Waterproof tile decks
If you want the look of stone on a rooftop, the tile is the easy decision. What sits under it is the one that determines whether the ceiling below stays dry.
System Tiledek underlayment
Why it works
What this actually involves
In short
- Purpose-built underlayment for exterior tile on flat and low-slope decks
- Full waterproof assembly beneath a tile finish
- Suited to rooftop, commercial and multi-residential work
- Compatible with porcelain, slate and natural stone
- Warranty covers the waterproofing assembly itself
Tiledek is a waterproofing underlayment made specifically for exterior tile over flat and low-slope decks. It is not an interior membrane pressed into outdoor service, and it is not a liquid coating hoping to bridge the movement between a rigid tile field and a deck that flexes.
The waterproofing assembly carries its own warranty independent of the tile, so responsibility for a leak is unambiguous.
Assembly detail
You are not buying a deck surface.
You are buying the ceiling below it.
Duradek is one sheet doing two jobs. It is the waterproofing and it is the floor you walk on, which means there is no seam between the two for water to find.
Where it matters most is the point the drawing shows on the left: the membrane turns up the wall and sits behind the cladding, so the drainage plane runs unbroken from the deck into the building envelope. That detail is invisible when we are finished. It is also the reason the deck is still dry long after a caulked joint would have let go.
- Membrane60 mil single-ply PVC sheet
- ChemicalTested to ICC-ES AC39
- WarrantySpeak to a specialist
- Membrane turns up behind the cladding
- Hot-air welded seam
- 60 mil PVC membrane
- Sloped to drain
Also available
Deck construction
Rooftop deck building
Turn a flat roof into a private terrace with one membrane that is both the roof and the walking surface.
Sundeck waterproofing
Sundeck waterproofing
The cheapest usable square footage you can add to a house — and it roofs whatever is underneath.
Deck construction
Multi-level deck building
More levels means more transitions, and every transition is somewhere water can get in.
Want a number for this?
We measure on site, check what is underneath, and give you an itemised quote with a timeline. No charge and no obligation.