Search for QBCC-licensed bathroom waterproofing contractors near you in Google or ask for referrals from local builders, and directly inquire about the reputation and credentials of SS Remedial Services. If you’re looking for reliable bathroom waterproofing in my area, we invite you to visit our project showcase for reference. Our bathroom & shower waterproofing specialists provide obligation-free but comprehensive quotations. S&S Remedial, your reliable local bathroom waterproofing experts guarantee no hidden charges after project completion. 

Indoor waterproofing in Australia typically costs between $40 and $100 per square metre, depending on the area treated, materials used, and complexity of the job. For standard wet areas like bathrooms, kitchens, and laundries in Brisbane or the Gold Coast

How much does shower waterproofing cost?

Shower waterproofing in Queensland typically costs between $400 and $750, depending on the size of the shower area, the type of waterproofing system used, and site conditions. For Brisbane and Gold Coast homes, this price usually covers:

• Waterproofing membrane application to shower walls and floor
• Surface preparation and priming
• Compliance with AS 3740 standards
• Licensed contractor work (required for insurance and QBCC certification)

If you’re renovating or building new, waterproofing is a mandatory step before tiling. Some waterproofing contractors may charge per square metre—usually between $40 and $100/m²—especially for larger wet areas or complex layouts.

How much does concrete kitchen waterproofing cost?

Concrete kitchen waterproofing in Australia typically costs between $40 and $80 per square metre, depending on the system used, surface preparation required, and site access. For a standard kitchen floor of around 8–12 m², you can expect a total cost ranging from $320 to $960.

How much the laundry waterproofing cost in Gold Coast and Brisbane?

Laundry waterproofing in Brisbane and the Gold Coast typically costs between $400 and $800, depending on the size of the area, the condition of the substrate, and the type of waterproofing system used. Most waterproofing contractors charge $40 to $80 per square metre, which includes surface preparation, membrane application, and compliance with AS 3740 standards for wet areas.

How much does cellar waterproofing cost in Brisbane and Gold Coast?

Cellar waterproofing in Brisbane and the Gold Coast typically costs between $800 and $3,000 for small projects (20–30 m²), depending on the condition of the structure, type of waterproofing system, and site access.

🧱 Cost Breakdown:

• Per m² rate: $40 to $100 for basic membrane systems
• Tanking systems: $100 to $150 per m², especially for high-pressure or flood-prone areas
• Add-ons: Sump pumps, French drains, or crack injection may increase costs

Factors That Influence Pricing:

• Extent of damp or water ingress
• Type of substrate (concrete, brick, stone)
• Interior vs exterior access
• Need for drainage or ventilation upgrades
• QBCC compliance and certification requirements

S&S Remedial and other local specialists offer interior waterproofing solutions that avoid excavation, making them ideal for tight-access sites or heritage homes.

How much does it cost to waterproof bathroom wall or floor?

In Brisbane and the Gold Coast, balcony deck or floor waterproofing typically costs between AUD $70 and $135 per square meter, depending on factors like surface condition, access, and the waterproofing system used. For small to mid-sized balconies, total project costs usually range from AUD $1,800 to $4,500, including surface prep, membrane application, and warranty-backed finishes.

That’s an excellent and crucial question for anyone hiring a house contractor or building contractor in Queensland.

No, a builder or renovator in Brisbane or the Gold Coast is NOT automatically a QBCC-licensed waterproofer.

Waterproofing is a Regulated Trade
In Queensland, waterproofing is legally considered a separate, specialised trade under the regulation of the Queensland Building and Construction Commission (QBCC).

Separate Licence Required:
Any contractor or waterproofing company performing a indoor and outdoor waterproofing services with a value over $3,300 (including labour and waterproofing materials) must hold a specific QBCC Waterproofing Licence (CPC31420 Certificate III in Construction Waterproofing).

Mandatory Certification: Only a QBCC-licensed waterproofer can legally carry out the work and issue the mandatory QBCC licensee aspect certificate (Form 43 or Form 16) to the building certifier or owner for compliance.

Brisbane Builders and contractors usually partner with SS Remedial for all residential and commercial waterproofing works.

Toilet waterproofing typically includes the floor slab, wall junctions, pipe penetrations, and the area around the toilet pan. Waterproofing membranes are applied before tiling to create a sealed barrier that prevents water from seeping into the substrate. For upstairs bathrooms or slab-on-ground homes in Brisbane and Gold Coast, this step is critical to avoid costly water ingress and rising damp.

Do I need a licensed contractor for toilet waterproofing?

Yes, in Queensland, any toilet waterproofing work valued over $3,300 must be performed by a QBCC-licensed contractor. Even for smaller jobs, hiring a licensed professional ensures the work meets Australian Standards (AS 3740) and protects your home from future leaks or compliance issues.