Case Studies

Evidence of Greenroof successes from
across the country and around the world

Washington I Oregon I Australia I Hong Kong

Since the early 1960s, both green roofs and roofs with “ponded water” have been constructed using an HPI (Hydrophobic Pore-blocking Ingredient) technology that makes the concrete roof completely impervious. Click here for industry testimonials on the superior performance of this technology.

This waterproof concrete technology has been implemented primarily in Australia and Hong Kong. Beginning with simple concrete roof slabs for parking, truly waterproof concrete has been used to create ponded water, swimming pools, amenity and green spaces over habitable space. Particularly in Hong Kong, the scarcity and expense of real estate forced development to go upwards, with amenities such as swimming pools and gardens being constructed on rooftops. Waterproof concrete has been used successfully for many years in these applications.

Following are several examples of this technology applied throughout the world, fulfilling a wide range of structural and functional purposes. Most of these case studies have over a twenty-year history with no leaks.

Washington I Oregon I Australia I Hong Kong