Ingress of Outdoor water areas is very common. GJK offers experienced, quality outdoor waterproofing services in Sydney. Our team of experts provides sound solutions to your deck, basement, crawl space, or other areas requiring waterproofing. We carry all the tools, equipment and substances to provide you with the best final results. The team will do the work at your place, so you don’t have to worry about moving things around.

We are ready to help with your patio, driveway, balcony or any outdoor surface in need of waterproofing. We can also seal your skylight or chimney to keep it looking great for years.

Is an outdoor waterproofing system required?

The outdoor areas are continually exposed to changing temperatures in the atmosphere; indoor and outdoor waterproofing is the only solution to protect the building and structures. If the cracks or damages caused by temperature on the buildings are ignored, it may result in greater risks to human life. 

Thus, waterproofing becomes necessary. It protects rooftops, decking, pools/spas, swimming pool surrounding, external walls, steps/stairs, parking area, and any other areas exposed to changing weather conditions. 

GJK is a full-service waterproofing company servicing Sydney and surrounding areas. Our specialised services range from a simple application of a waterproofing solution to full structural preservation.

Causes of outdoor damage 

  • Either loosely packed or cracked or damaged, or missing tile leaves water to enter the substrate and surrounding areas.
  • Waterproofing sometimes may get damaged or become ineffective during construction or installation of the inappropriate system, or unsuitable method of preparation of the system, poor installation, rapid change in atmospheric temperature, which lead to ingress of water indoor and outdoor area.

External Wall waterproofing keeps your concrete in great shape, which can save you money in the long run. Even the best concrete needs to be sealed every few years. That’s why GJK is there for you with its excellent services.

At GJK, we provide all kinds of exterior waterproofing services for both residential and commercial buildings. We have a team of experienced contractors who have had skills in waterproofing services for over 25 years.

We aim to keep your home warm and dry and to keep your family protected during the cold and rainy months. 


To arrange an inspection or a quote for any outdoor waterproofing services, please don’t hesitate to contact us by phone or an online enquiry form. Call GJK, the best outdoor waterproofing in Sydney, now for a consultation!