Classification Information
Waterproofing synthetic and modified bitumen membranes for above and below grade use on roofing and walls sold through distribution centers; Non-metal waterproof membrane for above-grade use, namely, as a roofing membrane, and for below grade use, namely, as a flashing around the foundation of a building; Non-metal roofing shingles; Roofing underlayment
Nonmetallic Building Materials