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Shower Waterproofing

Tile Waterproofing

Grout Waterproofing

Sealant Application

Waterproof Membrane Installation

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MH Tiling

5.01 ServiceTasker review

Thornton, NSW · 11.6 km from Maryland 13 years in business

MH Tiling offers professional tile installation, regrouting, and waterproofing solutions to transform your spaces with precision and style. Whether you're renovating a bathroom, updating a kitchen, or improving outdoor areas, our experienced team delivers…

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Quoted 15 times on ServiceTasker Member since 2024

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Do bathroom and kitchen renovators need a licence in New South Wales?

Over a job value ($5,000 incl GST (labour and materials)). Contractor licence - kitchen, bathroom and laundry renovation from Building Commission NSW. Does not cover load-bearing work. Waterproofing is its own licence category, also over $5,000.

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Last checked 12 November 2026. General information, not legal advice.

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Bathroom Waterproofing cost guides & tips

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How Much Does Bathroom Waterproofing Cost? [2026]

Cost guide

How Much Does Waterproofing Cost

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Answers to Your Common Questions

What is the duration that is taken in the process of waterproofing?

This normally takes 24 to 72 hours of cleaning, priming, application of two coats of the membrane and drying stages.

What are some things that may indicate poor bathroom waterproofing?

Some visible indications of poor waterproofing include stained walls, floor or tiles, peeled or bubbled wall paint, water stains on the ceiling, black mould growth on the tiles and the grout.

What is the cost of bathroom waterproofing?

The prices vary between $40 per square metre and $500 and $750 for an average bathroom size. Bigger or more elaborate ones usually come at a higher price.

How long does bathroom waterproofing last?

Bathroom waterproofing is usually accompanied by a warranty of about ten years, however, if done rightly, it can last longer. The basic types of waterproofing membranes should provide a durability of not less than 10 years.

How many hours does it normally take to dry after application of waterproofing?

Before you can use the bathroom or proceed with other renovations, you have to wait for the waterproofing to dry. It takes between 2 to 5 days in most cases depending on the weather condition.

What Australian standard is recommended to follow for waterproofing a bathroom?

Bathroom waterproofing in Australia must comply with the Building Code of Australia (BCA) and Australian Standard AS3740. Key requirements include thoroughly waterproofing shower floors, waterproofing shower walls up to 1800mm, and waterproofing bathroom walls to 150mm. Additionally, bathroom floors made of timber or on the 2nd floor or higher must be thoroughly waterproofed, and the area over the shower step down to the floor must be waterproofed to 100mm.