Waterproofing in Perth, from leaking showers to damp walls

Waterproofing in Perth covers more than the shower recess. It includes whole bathrooms, balconies over living rooms, basements set into sand, retaining walls holding soil against the house and rendered walls that let winter rain through. If water is getting where it should not, or a renovation needs a membrane, this is a good place to start.

You do not need to know the cause. Stained ceilings below a bathroom, loose tiles, musty smells, flaking paint or puddles at the base of a wall are enough to go on. Just note what you are seeing and where in the home it shows up.

New work has to satisfy the National Construction Code, through its Deemed-to-Satisfy provisions, a Performance Solution or both. Wet-area membranes under the NCC 2022 Housing Provisions must comply with AS/NZS 4858, and external above-ground membranes with AS 4654.1 and AS 4654.2 where those provisions apply.

The guides on this site explain each type of job, what a sound quote should include and the WA rules that protect homeowners, so you can talk to a contractor with confidence.