Intumescent 4
Intumescent 4 :
Problems: Some intumescents are susceptible to environmental influences, such as humidity, which can reduce or negate their ability to function. In Germany, the Deutsches Institut für Bautechnik, DIBt, quantifies the ability of intumescents to stand the test of time against various environmental exposures. DIBt-approved firestops and fireproofing materials are available in Canada and the U. S
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