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Trusty-Seal is a premier waterproofing company. We sell our services to all residential and commercial areas within New South Wales. We specialise in new construction and remedial works, both internally and externally.

We have 17 years knowledge and experience with all liquid and sheet membranes. We pride ourselves in our expertise, quality workmanship and customer service.

We are a family business, owned and operated by Graham (Director/Technician) and Kerry-Anne (Administrative Manager).



Building waterproofing is a process, designed to prevent water from penetrating a building. Extensive waterproofing measures are added to a building at the time of construction to provide moisture control from the start. Waterproofing can be done after a building is built to address problems as they emerge or as part of a building retrofit. Waterproofing is crucial for a number of reasons. It keeps a building dry, reduces internal humidity, thus making it more comfortable to work or live in, protects objects inside the building from damage as a result of humidity or water exposure.

Water damage can be a serious issue in a structure. With water comes mold and a host of other problems which can undermine foundations, make conditions in the building unsafe and damage property inside the building. Water penetration can also damage concrete and other building materials, especially in cold climates where water may freeze and cause cracks. Insufficient waterproofing can be a problem all year round, not just during the rainy seasons.
TRUSTY-SEAL specialise in building waterproofing, providing maintenance, restoration and new construction services.

Recent Projects:

Liquid Membrane
Garbage Room Floor
Epoxy Membrane
Liquid Membrane
Sheet Membrane Internal Wet Areas - Liquid Membranes
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0414 076 187