Laundry waterproofing Sydney
Professional laundry waterproofing in Sydney. Licensed waterproofers installing AS 3740-compliant membranes for laundry rooms, utility areas, and combined bathroom-laundry spaces across Sydney.
What Is Laundry Waterproofing?
Laundry waterproofing is the application of waterproof membranes to laundry room floors and walls to prevent water damage from washing machines, troughs, and plumbing connections. In Sydney, laundries are classified as wet areas under AS 3740 and must be waterproofed to comply with the Building Code of Australia. Proper laundry waterproofing prevents costly water damage to floors, subfloors, and rooms below, which is particularly important in Sydney's multi-storey homes and apartments.
Laundry Waterproofing Cost in Sydney
Typical pricing: $55 - $100 per m²
Compact Laundry
Small internal laundry up to 3m² with washing machine area and trough
Standard Laundry
3-6m² laundry with trough, washing machine, and floor waste drainage
Large / Combined Laundry-Bathroom
6m²+ combined laundry and bathroom or commercial laundry facility
Laundry Waterproofing Methods We Use in Sydney
- 1Liquid-applied polyurethane membranes
- 2Cementitious waterproofing coatings
- 3Sheet membrane systems for larger laundry areas
- 4Flexible sealant systems around penetrations and fixtures
- 5Epoxy injection for remedial crack sealing under laundry slabs
Quick Quote
Price range: $800 – $2,500
Per m²: $55 - $100 per m²
Compliance: AS 3740 Wet Area Standard
Licence: NSW Fair Trading Licensed
Our Laundry Waterproofing Process in Sydney
Every project follows our proven process to ensure compliance with Australian Standards and NSW regulations.
Free inspection and quote at your Sydney property
Remove existing floor coverings and fixtures as required
Prepare substrate, repair cracks, and ensure correct falls to floor waste
Apply primer and install bond-breaker tape to internal corners
Apply first coat of waterproofing membrane to floor and wall turn-ups
Apply second coat of membrane perpendicular to the first
Detail all penetrations (pipes, floor waste, taps) with appropriate flanges
Conduct flood test and issue compliance certificate
When You Need Laundry Waterproofing in Sydney
- You are renovating your laundry or installing a new washing machine connection in your Sydney home
- Water damage or damp is visible on floors or walls around your laundry area
- You are converting a cupboard or other space into a laundry and need wet area compliance
- Your Sydney apartment building requires laundry waterproofing as part of strata maintenance
- You are selling your Sydney property and need to demonstrate wet area compliance
Why Use a Licensed Waterproofer in Sydney
NSW Fair Trading requires waterproofing work to be carried out by licensed professionals. Here is why that matters for your Sydney property:
Laundry waterproofing is wet area work regulated under NSW Fair Trading and requires a Waterproofing Licence
A compliance certificate from a licensed waterproofer is required for building sign-off in Sydney
Licensed waterproofers carry mandatory insurance protecting Sydney homeowners
Unlicensed laundry waterproofing can void home insurance policies and create legal issues at resale
NSW regulations protect consumers by ensuring only qualified professionals perform wet area waterproofing
Laundry Waterproofing FAQs - Sydney
Frequently Asked Questions
Yes. Under AS 3740 and the Building Code of Australia, any room in a Sydney home containing a washing machine, laundry trough, or floor waste is classified as a wet area and must be waterproofed. This includes the floor and walls to specified heights. NSW Fair Trading requires this work to be done by a licensed waterproofer.
Laundry waterproofing in Sydney typically costs between $800 and $2,500. A compact internal laundry starts from around $800, while larger combined laundry-bathroom spaces can reach $2,500. The cost depends on the size, existing condition, and whether tiles need to be removed. We offer free quotes across Sydney.
Under AS 3740, the entire laundry floor must be waterproofed, with the membrane turned up the walls at least 150mm. Behind the washing machine and laundry trough, the wall must be waterproofed to at least 150mm above the fixture. If a floor waste is present, the floor must be graded to drain towards it.
No. In NSW, wet area waterproofing must be performed by a licensed waterproofer. DIY waterproofing of a laundry is not compliant with NSW Fair Trading regulations and will not receive a compliance certificate. This can affect your home insurance and create issues when selling your Sydney property.
Laundry waterproofing in Sydney typically takes 1-2 days. Day one involves preparation and first membrane coat. Day two includes the second coat and flood testing. For combined laundry-bathroom spaces, allow 2-3 days. The membrane needs to fully cure before tiling can begin.
Related Waterproofing Services in Sydney
Water Leaking Right Now?
Don't wait for water damage to get worse. Get connected with emergency waterproofing contractors in Sydney who can respond fast.
Get Emergency Help NowGet 3 Free Laundry Waterproofing Quotes in Sydney
Compare prices from licensed Sydney waterproofers. No obligation, no pressure. Get matched with the right contractor for your laundry waterproofing project today.
- 100% free, no-obligation quotes
- Licensed and insured Sydney waterproofers only
- Compare up to 3 quotes side by side
- Fast response — most quotes within 24 hours
Get 3 Free Quotes
Compare licensed waterproofing contractors in Sydney