75582583
Nov 4, 1998
Building materials, specifically structural insulated panels (SIPs) comprised of a foam core of expanded polystyrene, urethane, extruded polystyrene, polyisocyanurate or other, typically between exterior and interior skins of oriented strandboard, or other sheet material The SIPs are specified for use as structural panels for floor, wall and/or roof applications
Nonmetallic Building Materials