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HomeServicesCertified Bathroom Waterproofing
Certified Compliance

AS 3740 Compliant Wet Area Membrane Systems

Protect your home with dual-layer liquid membrane systems backed by signed QBCC Form 16/12 waterproofing certificates.

Certified Bathroom Waterproofing

Service Overview

Waterproofing failures are the leading cause of internal building defects in Australia. Our certified waterproofing application stops moisture ingress at the root.

We install heavy-duty Class III high-extensibility liquid polyurethane and acrylic membranes compliant with National Construction Code (NCC) requirements.

All work is completed under QBCC license guidelines with complete AS 3740 waterproofing certificates handed over upon job finish.

What's Included in This Service:

AS 3740 & AS 4858 certified membrane systems
Bond breaker tape installation on all wall-to-floor junctions
Puddle flange installation & leak-proof floor penetrations
Moisture testing & substrate priming
Signed Form 16 / Form 12 waterproofing certificates

Our 4-Step Installation Workflow

A structured execution model designed to ensure zero trade delays and long-lasting durability.

Step 01

Substrate Cleaning & Priming

Grinding concrete slabs or sheet flooring, clearing debris, and applying high-adhesion primers.

Step 02

Joint Reinforcement

Installing elastomeric bond breaker tapes and corner bandage seals to allow for structural house movement.

Step 03

Dual Membrane Application

Applying two heavy coats of wet area membrane with compulsory cross-hatch curing periods.

Step 04

Final Compliance Inspection

Conducting thickness gauge checks and issuing official QBCC waterproofing certificates.

Got Questions?

Frequently Asked Questions.

Got questions about this service? Here are answers to common client inquiries.

This certificate is legally required by council certifiers and home insurance providers to verify that your wet area meets Australian Standard AS 3740.

Ready to Book Certified Bathroom Waterproofing?

Contact us today for an itemized fixed quote or to schedule a site measure across SEQ.