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Steam Room



Waterproofing your Bathroom

The average cost of a professional to waterproof a bathroom is $600, but fixing a dodgy job can push your budget up to the thousands.

Understand the necessary steps.

1 The Professional

Your tradie needs to be qualified in Certificate III in Construction and Waterproofing through an industry approved provider. Waterproofing can be performed by a specialist, builder or plumber. Do your research and to see whats best for you.

2 Be in the know

Don't leave yourself in the dark when it comes to forking up to maintain your home. Understand the finest information that's available to you to get the most out of your budget. Keep up to date with laws and regulations, the best tradies will be a member of the Master Plumbers Association or Builders association within your state.

3 Research, social media and reviews

Experience is key when it comes to finding a professional. Your professional must be able to foresee issues and future costs and make recommendations not just fix and leave. Look through their social media, reviews and testimonials, not every review will be good but it's whether issues where followed up with an unsatisfied customer that is important. Veer away from businesses who do not follow up on unsatisfied customers.

4 Have a standard

All work performed by trade businesses must meet a national standard. There are two main standards required to legally comply with waterproofing:

Australian Standard 4740-2010. Waterproofing of Domestic and Wet Areas


Australian Standard 4654-2012 Waterproofing membranes for External Above Ground Use.

5 Get a guarantee

Like any other large purchase always ask for a guarantee and warranty from the installer. Make sure you keep it in a safe place, issues with installations may arise months after the completion and should protect you from repair expenses in the event of damage.

Can I DIY????

Regulations vary in different states and councils. Some laws require waterproofing be done professionally. Read up online or contact your local council to for guidelines. The shower area is the highest risk of damage should the work performed prove to be faulty, all walls and floors must be done to an approved standard. Laundries and seperate toilets have fewer regulations, due to a lower risk.


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