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External Waterproofing

External Areas such as Roofs and Balconies are subject to extreme weather conditions such as torrential rain and in some cases heavy snow, which can cause leaks, effecting electrical components, insulation and structural damage. For this reason, it is vital that all roofs are waterproofed and in compliance with Australian Standards (AS 4654.2-2012). 

By waterproofing roofs and other external areas, you add an extra layer of protection from any leaks that could end up costing tens of thousands in structural damage. However, purchasing the right product and utilising the right method of application is essential to ensure your waterproofing succeeds. Using the wrong product or incorrectly applying your waterproofing will cause leaks and compromise the structural safety of your building.  

Roof Waterproofing Systems:

  • PVC Bonded System (Roofs)
  • Torch-On System (Roofs)
  • Liquid Membrane System (General External Areas)
  • Butynol System (Terraces and Balconies)

To be in compliance with Australian Waterproofing Standards for external areas (AS 4654.2-2012), the following criteria must be met:

  • External waterproofing membrane system must accommodate movements that occur within the substrate.
  • Falls of all finishes must ensure water flows to drainage outlets. Water must not be retained on finished surface. (Exception of residual water due to surface tension)
  • Substrate must be resistant to moisture damage caused by condensation on underside.

We recommend the use of the following products for external waterproofing:

  • ACTFLEX 101
  • Suprema Soprasun Torch-On Bitumen Sheet (Roofs Only)
  • ACTFLEX 929 with a Top Coat of Duram ATC
  • ACTFLEX EP 250 Hydro Epoxy

What Our Customers Say About Us

Service and knowledge is outstanding. Got me out of trouble more than a couple times, Chris came out to inspect many jobs for me to make sure Application was done accordingly

Aquatight Waterproofing

Large range of material at a great price. Their Knowledge and understanding of the job was very useful. Great staff always happy to help

Scw (Sydney Citi Waterproofing) fadi

Great team great staff great products, not only did they supply quality products, their applicators are tremendous in keeping waterproofing standards at such a high level. Great job guys

Peric developments – Mirco peric

One of best stores that I have ever dealt with for building supplies. The owner is really helpful and knowledgeable when it comes to all things waterproofing. Their products are top quality and great value. Highly recommended!

Rob Cochrane

Very professional in what they do. Your one stop shop for all your waterproofing needs. They recently completed our waterproofing on our unit block. Like brand new again and quality work. Don’t waste your time with the other waterproofers. Go and see James. I am certain that he won’t let you down.

Sam Maakaroun

Best waterproofing supplies in Sydney!
Needed to purchase water-based waterproofing and the team were very helpful in guiding me and even directed me through every step of the process!
10/10 would recommend!

Michael Kayal

excellent service would defiantly go back for products. Got great advice for the problem that i had would defiantly recommend these guys for any one that has water leaks or any water isuues

Roy Dimassi

We have been dealing with Christian for over 20 years for all of our Waterproofing needs. He not only stocks quality products but is also very knowledgeable about all waterproofing solutions. The customer service he provides is second to none and there is nothing too big or small for him. We recommend The Waterproofing Shop to everybody!

Cassandra Sabharwal

Very knowledgeable staff with an extensive range of products at competitive prices.
The only place to shop for waterproofing products.

Michael Cechellero

We used the actech AT906 in our bathroom renervations and found the product to be of a very high quality. The advice given to us at the waterproofing shop was amzing.
Thank you guys..

Jacey Dimassi

Great service and knowledge, great products and reasonable prices. Highly recommend !

Buildtech Nsw

Very helpful staff and spent time to make sure I had the right products.

Catrina Mirza

Excellent service and the staff are very informative. Highly recommend.

John Dros

Brilliant service

John O.P.H

Great product best technology and best service and I have been dealing with chris and his family for the last 25years

Joseph Dib

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