Since 1987, PIMA (Polyisocyanurate Insulation Manufacturers Association) has served as the voice of the rigid polyiso industry. PIMA is one of the foremost industry advocates for building energy-efficiency practices and policies. The Association represents the public policy interests of the polyiso industry at the local, national, and international levels to advance the message of high-performance building construction. PIMA's membership includes manufacturers of polyiso insulation and suppliers to the industry. The products of PIMA's members comprise the majority of the polyiso produced in North America.