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RT40 BUTYL™ is a 40mil self-adhered flashing membrane. RT40™ is an exclusive laminate of reflective aluminum foil facer with butyl compound. As waterproof flashing membrane, it adheres to most surfaces and seals around punctures, forming a protective air, vapour and waterproof barrier. It is specifically designed to be self-adhered to most substrates without using any primer.

RT40 Butyl Transition Tape

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