Sections of the parking garage at 50 Queen Street, Kitchener were leaking water, necessitating remediation. The split-slab waterproofing membrane installed at the time of construction had degraded in some spots. The contractor removed the asphalt top-layer and needed a waterproofing membrane to apply to the exposed concrete deck beneath. The project required the removed top-layer be replaced with concrete, so the membrane needed to be tough and durable. The membrane was also required to not damage or degrade asphaltic rubbers because the rest of the parking surface was asphalt.