Bathroom & Shower Waterproofing In Melbourne

Bathroom & Shower Waterproofing Membranes

Bathrooms and showers are the most used wet areas of any home, so; when it comes to bathroom waterproofing selecting the correct membrane for your project is crucial.

At Australian Waterproofing Company, we work with a number of different membranes including hybrid polyurethane and acrylics where more brittle monomeric membranes might fail. We partner the major manufactures who are committed to continue developing products to meet the Australian Standards and harsh environment, so that we can offer superior quality services that has to deal with bathroom waterproofing in Melbourne.

Quality solutions

  • Installed by qualified waterproofing technicians
  • Correct membrane selected for your project
  • 10 year warranty

If you are looking for bathroom or shower waterproofing in Melbourne, because you are constructing a new bathroom and shower or renovating an existing internal wet area then it becomes imperative to install a membrane that is fit for purpose and applied correctly by a qualified applicator. Supervisors and installers should be aware of how the selected waterproofing system is designed to work in conjunction with AS 3740—2010 for Waterproofing Wet Areas within Residential Buildings. It is also important that the shower waterproofing membrane installed is compatible with the finished floor system, such as under floor heating, floor and wall tiles and their adhesives. At Australian Waterproofing Company, we use this as a standard practice to fulfill your waterproofing needs.

Issues with
Internal wet areas

Waterproofing of wet areas, such as bathrooms, shower recesses and bath hobs, are consistently among the most common reoccurring problematic areas. They are considered a category one (major) building defect among home-owner complaints about defective wet areas; ranking third highest overall. By using the qualified waterproofing technicians from Australian Waterproofing Company for bathroom waterproofing in Melbourne, you can rest assured of the correct diagnosis and give your project the best chance of a long term waterproofing solution.

Design – What you need to know prior to waterproofing

Shower walls – are to be waterproofed to 150 mm above shower floor substrate, or 25 mm above maximum retained water level. Shower walls are to be water resistant to 1800 mm from finished floor level or 150 mm above the fixed shower head.

All internal and external corners and horizontal joints are to be waterproofed within the shower area. Plaster board joints (outside shower) that extend inside shower areas must be waterproof.

Unenclosed shower areas are to be waterproofed to 1800 mm from shower.

Tap-penetrations are to be sealed. Further, tap washers must be accessible without damaging the seal around tap penetrations.

Floors and horizontal surfaces adjoining an insert-bath are to be waterproofed.

Where the floor is waterproofed, the tanking of the walls is to be a minimum of 25 mm above the finished floor level.

Bond-breakers must be installed, in cases where the membrane is bonded to the substrate, at all wall-to-floor and hob-to-wall junctions and at movement joints.

Hobs must be constructed of masonry, concrete or similar material. Hobs should NOT be constructed of timber. Hobs must be adequately secured to the floor.

Water-stop angle to shower area must be finished flush with the top of the finished floor level. This angle forms part of the waterproofing system and must be installed prior to the installation of the waterproofing system.

Enclosed and Unenclosed hob-less showers must be fitted with water-stop angles. The vertical leg of the angle must finish a minimum of 5 mm above the level of the finished floor.

Fixing penetrations must be sealed. Flashing in all wet areas apply to bathrooms and toilets, but do not apply to kitchens

Frame less shower screens require a full floor waterproofing system or 1800 mm radius from shower rose and, where water stop angles are installed angles must be made visible through tile bed.

Water stop must be installed in all wet-areas doorways.

Australian Waterproofing Company


Australian Waterproofing Company is one of the leading waterproofing contractors in Melbourne.

We make use of premium quality materials to waterproof your building.


Shower and Bathroom Internal Waterproofing

waterstop Internal Wet Areas

Internal Shower Over Bath Membrane System

Bath Edge Detail

Shower Niche Detail

Membrane Under Drainage Channel

You Name It We Can Waterproof It, On Budget And On Time.

Make sure your domestic and commercial property is waterproofed using the best materials in the industry by contacting Australian Waterproofing Company.

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