Meet the owner of Seal It Up Waterproofing DAVID COLLINS.

The name known for providing highly effective fibreglass waterproof solutions.

 Detail-driven waterproofing and bespoke fabrication for complex coastal design.

We collaborate with architects across the Coal Coast to deliver waterproofing solutions that respect design intent while addressing the realities of coastal exposure, movement, and drainage.

With 11 years’ experience in Sydney, we bring a practical understanding of how materials behave once built — not just how they look on paper. Our ability to design and fabricate custom waterproofing components allows us to resolve difficult junctions and non-standard details, including:

Custom flashings, angles, and drip edges

Integrated trays, tubs, and drainage solutions

Mechanical fittings designed to interface cleanly with finishes

From cliffside locations such as Coalcliff and Clifton to exposed beachfront environments like Austinmer and Bulli, we provide solutions that enhance longevity without compromising architectural outcomes.

Early involvement welcomed.

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