There isn’t one “best” waterproofing method for every bathroom. Systems range from liquid membranes to sheet systems and waterproof boards, and the right approach depends on the project, substrate, and detailing requirements.
What separates a good result from a failure is not just the product, but the level of control, detailing, and verification before it’s covered. We work with both liquid-applied and sheet membrane systems, selecting the most suitable option for each project.
When paired with proper preparation, stage verification, and clear documentation, either system can deliver a consistent, transparent, and reliable outcome.
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.
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.
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.
It 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.
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.
Have A Project in Mind?
Planning a new build or renovation? Contact Zyron Waterproofing today for a professional assessment and a reliable waterproofing solution tailored to your project.
