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Waterproofing Wet Areas

waterproofing wet areas

The major wet area in any house is the bathroom. It is therefore important that the bathroom is correctly waterproofed in order to reduce the risk of structural damage occurring as a result of dampness, water leaks, or condensation.

What is Waterproofing?

Waterproofing is the application of a product that is impermeable so that water cannot pass through it. Water leakagecan cause problems such as rotting or warping timbers, mould and mildew, swollen or distorted building materials, peeling or blistering paint and so forth. These problems can be unsightly, expensive to repair, or can even be hazardous to your health.

Australian Bathroom Water Proofing Standard Requirements

The Building Code of Australia and the Australia Standard (AS 3740-2010) outline the minimum requirements for the waterproofing in residential bathrooms.  These requirements include:

  • Waterproofing the entire shower floor
  • Waterproofing at least 100mm over the hob or step down to the bathroom floor
  • Waterproofing at least 150mm up the inside the shower walls
  • Waterproofing the whole bathroom floor if it’s made from timber, plywood, or particleboard, or if it is not on the ground floor
  • Waterproofing the vertical angle between any two shower walls to at least 1800mm

These are the minimum requirements, but depending on your needs, you may also want to waterproof the areas around your bath, toilet and vanity unit.

Hamilton Installations are fully licensed waterproofers and upon job completion you will be issued a certificate of compliance as well as a full warranty.

The Process of Waterproofing

When we undertake your bathroom renovation we ensure all the surfaces within the bathroom are correctly prepared and primed.  In particular any joins between the wall and floor, between the walls themselves, and around any drains in the floor.  A polyester reinforcement mat is fitted into all the internal corners of the shower recess and then the waterproofing membrane is applied to all surfaces.  To ensure the highest quality waterproofing we apply two coats. Silicone sealants are used around the points where bathroom features such as the bath and vanity unit meet the walls, to ensure water doesn’t get behind them.