Frequently Asked Questions
Will you supply a certificate?
Yes. For every completed project we issue a written waterproofing certificate that details the areas treated, products used, and date of installation. This is provided to you and can be passed on to your builder, certifier, or strata for their documentation.
What areas do you waterproof?
We specialise in internal wet area waterproofing, including bathrooms, showers, ensuites, and laundries. If your project includes other areas, we will confirm suitability based on the substrate, exposure conditions, and the required system.
Can you waterproof over old waterproofing?
Sometimes, but in most cases, removing the old membrane and re preparing is the safer option. Waterproofing is only as reliable as what it bonds to, and existing membranes can be contaminated, degraded, or incompatible. We will assess what is there and recommend the safest approach, typically grinding back and re preparing to a clean, stable surface. If an overlay is genuinely suitable, we will confirm it on site.
Can I do bathroom waterproofing myself?
You can apply a membrane, but compliant wet area waterproofing depends on preparation, detailing, compatibility, curing conditions, and correct thickness, as well as protecting the membrane before it is covered. If you need a reliable outcome and clear documentation, professional installation is usually the safest option.
What is the standard for waterproofing in Australia?
For domestic wet areas, requirements are set by the National Construction Code (NCC) and commonly reference AS 3740, Waterproofing of domestic wet areas. For external above ground areas, other standards may apply.
How many coats of waterproofing are needed for a bathroom?
t depends on the membrane system and the required dry film thickness (DFT). The correct approach is to apply the number of coats needed to achieve the manufacturer’s specified thickness and coverage, not to guess a number.