Imperial Plaster Board, Heavy Building Materials, 1/2 in x 4 ft x 8 ft

1/2 in x 4ft x 8ft Imperial Plaster Board. Ultralight gypsum base imperial. These panels feature an innovative noncombustible gypsum core. The blue face paper controls water absorption and provides a strong plaster bond and resists plaster slide or slip under the trowel. The face paper is folded around the long edges to reinforce and protect the core. The long edges of the panels are tapered, allowing joints to be reinforced and concealed with Sheetrock® Brand joint treatment systems.