Waterproofing Supplies in Port Stephens NSW

Water Proofing — GRT Building Supplies in Port Stephens, NSW

Protect Your Bathroom

Are you renovating your bathroom? Never forget the importance of waterproofing! The team from GRT Building Supplies can assist you with using the correct waterproofing product to ensure your bathroom is protected. Based in Port Stephens, we are your one stop shop for all your construction needs.  

Waterproofing can come in many forms including membranes, sealants, joint bands, primers and additives. All areas of the property susceptible to water damage must be waterproofed. This includes bathrooms, kitchens and laundries, as well as roofs. We can supply you with quality products from Total Waterproofing Supplies, which has the most comprehensive range of waterproofing products in Australia. No matter what you need, you’re sure to find it with us.  

Visit us in store today or give us a call any time to request a quote 

Membranes, Sealants & Primers

At GRT Building Supplies, we’re proud to offer some of the most competitive prices in the market. Frequently working with local engineers, architects and builders, we have more than 20 years’ industry experience, so you can trust in our expertise and we’re more than happy to answer any of your queries.  

All products are available for delivery across Port Stephens, Newcastle, the Central Coast and more. So, book in your order with us now! 

Sealant — GRT Building Supplies in Port Stephens, NSW


Total Waterproofing Supplies is an Australian owned company and one of the leading suppliers of waterproofing products. With one of the most comprehensive product ranges available, you’ll be able to choose the most suitable product for your project. Our friendly team will also be on hand to assist, ensuring you know the difference between each product.  



Mapei products are made using the best raw materials to ensure superior quality and adhesiveness. With more than 80 years of experience and a focus on innovation, Mapei products are some of the best in the market.