Laundry Waterproofing in Adelaide

What Is Laundry Waterproofing?

Laundry waterproofing is the application of a compliant waterproof membrane to the floor and lower walls of a laundry to prevent water damage from washing machines, tubs, and trough overflows. Under AS 3740-2021, laundries are classified as wet areas in Adelaide and must be waterproofed to specific standards. Proper laundry waterproofing protects your home from the gradual water damage that washing machine leaks and splashes cause over time.

When Do You Need Laundry Waterproofing?

We connect you with licensed waterproofers when:

• You are renovating or building a new laundry
• The laundry floor is being tiled or re-tiled
• You notice damp patches, mould, or staining around the laundry area
• The washing machine has overflowed and damaged flooring
• You are converting another room to include laundry facilities

Methods and Materials

Licensed waterproofers in Adelaide use a range of proven methods for laundry waterproofing:

• Liquid-applied polyurethane membranes
• Cementitious waterproofing coatings
• Sheet membrane under tiled floors
• Hob containment around washing machine area
• Flashing tape at wall-floor junctions

Laundry Waterproofing Cost in Adelaide

Costs vary based on size, condition, access, and the membrane system used. Here are typical Adelaide price ranges:

Typical rate: $55 – $100 per m²

Want a detailed cost breakdown? See our full Laundry Waterproofing cost guide.

AS 3740-2021 Requirements

In Adelaide, laundry waterproofing is regulated under Australian Standard AS 3740-2021. This standard sets out the mandatory requirements for waterproofing wet areas in domestic and commercial buildings. Key requirements include:

• Waterproofing must be applied by a licensed waterproofer
• Membranes must meet minimum thickness and continuity requirements
• A flood test must be conducted before any tiling work begins
• A compliance certificate must be issued upon completion

Learn more in our complete AS 3740-2021 guide.

The Laundry Waterproofing Process

When we connect you with a licensed waterproofer in Adelaide, here is the typical process they follow:

1. 1Remove existing flooring and inspect substrate
2. 2Repair substrate and ensure correct falls to floor waste
3. 3Prime substrate and apply bond breakers at junctions
4. 4Apply flashing tape to corners and penetrations (taps, wastes)
5. 5First coat of liquid membrane applied to floor and walls
6. 6Second coat applied after drying time
7. 7Waterproof wall areas behind tub and washing machine
8. 8Conduct flood test (24 hours)
9. 9Issue compliance certificate
10. 10Proceed with tiling or floor covering installation

Why Choose Licensed Waterproofers

We only connect you with licensed, insured waterproofing professionals in Adelaide. Here is why that matters:

• Laundry waterproofing is a compliance requirement under AS 3740-2021
• A compliance certificate is needed for building approval in South Australia
• Washing machine leaks are a leading cause of insurance claims in Adelaide homes
• Licensed applicators know the specific membrane heights required for laundries
• Proper falls and floor waste installation prevent long-term water pooling