The contractor was relaying a waterproof membrane immediately above the London Aquarium and naturally the client was concerned about leaks with such precious livestock beneath. The waterproofing was torch-on bituminous felt membrane, due to be covered with road grade asphalt. Protecto-board was laid onto the waterproofing and secured with tape. It was cut to shape around the curbs cleanly and effectively without leaving vulnerable areas and without delaminating or crumbling, or leaching bitumen. It protected the waterproofing from temporary construction process damage and permanently protected it when covered with hot road grade asphalt afterwards
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