About Waterproofing Perth

Waterproofing Perth is a website for Perth homeowners dealing with a leaking shower, a damp bathroom wall or a balcony letting water through to the room below. It isn't a contractor. It explains what good residential waterproofing involves, using Australian standards and WA government guidance, so you can judge a quote with more confidence. When you're ready, you can get your waterproofing done by licensed and insured local contractors.

Who this site is for

It's for people across Perth and the surrounding suburbs who own or look after a home and need water kept where it belongs. That might be a bathroom renovation in Subiaco, a shower that has started staining the hallway carpet, or a retaining wall in the hills that weeps after every winter storm.

Some visitors already know what they need. Others just know something is wet that shouldn't be. Both are welcome here.

Who does the waterproofing work

Licensed and insured local contractors do the work. This site doesn't send out crews, quote jobs or sign contracts. It helps you understand the job well enough to ask good questions and compare the answers you get.

The kinds of jobs covered

The guidance covers the residential waterproofing Perth homes need most often:

• bathroom and shower waterproofing, including new builds and renovations
• repairs to leaking showers
• balconies and other external areas above the ground
• basements, retaining walls and exterior walls

Each one fails in its own way, so it pays to know which one you're dealing with before you compare quotes.

Where the guidance comes from

The technical points on this site are taken from published sources, not opinion. In plain terms:

• The National Construction Code sets the performance a wet area in a house has to reach. A builder can meet it by following the code's standard approach, by having an alternative solution assessed, or by combining the two.
• A membrane used to waterproof a wet area under the 2022 housing provisions needs to comply with AS/NZS 4858.
• Where the code's standard approach applies to balconies and other external areas above the ground, membranes should comply with AS 4654.1 and AS 4654.2.
• Even small jobs that don't need a building permit still have to meet the building standards, so a cheap quote doesn't make the waterproofing optional.

WA's Building and Energy guidance is also used to explain contract protections. One example: if the Home Building Contracts Act covers your job, the deposit is capped at 6.5% and later payments should only cover work already done or materials already supplied.

What this site won't claim

You won't find made-up reviews, staff photos, prices or promised arrival times here. If a fact can't be traced back to a standard or an official source, it stays off the page. That way the advice holds up when you put it to a contractor.

Getting the most from your visit

Start with the job that matches your problem, then note the basics before you send an enquiry: which room or area is affected, roughly how big it is, how long it has been leaking, and whether anything is tiled over. Those details help a contractor understand straight away whether you need a repair or a full replacement.