The specification for the waterproofing was based upon the traditional bitumen sheet type system. The project had begun with 4 or 5 smaller structures completed using a 'Superma Antirock' SMS bitumen system. However, for programming and other cost-efficiency reasons the client opted to utilize PmB.
PmB is a two-part, spray applied, durable corrosion protection and waterproofing material. The high-performance system is 100% polyurethane containing no fillers or additives and is VOC free. Once applied, PmB has exceptional bond strength to all commonly used substrates, has excellent crack-bridging capability and a life expectancy in excess of 30 years and holds British Board of Agrément approval.
The system has gained BBA approval for use as a damp proof and waterproofing membrane for internal and external tanking. The system holds approvals in many continents including Europe, North America, the Middle and Far East.
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