What is CPA membrane?
CPA stands for Co-polymer Alloy. The IB membrane has a CPA package of Nitril Rubber plus other modifiers which gives the formulation the greatest resistance to those chemicals which the roof may come in contact with, including fatty acids from restaurants and industrial manufacturing. The CPA formulation also has the highest resistance to U.V. of any product on the market today. Our CPA formulation has over 30 years of proven performance without a single failure.