The ToughRock® Gypsum Sheathing has a moisture-resistant, non-combustible gypsum core. The surfacings on both faces are moisture-resistant recycled paper.
Specifications
Item Number
455488
Applicable Standards
UL Classified (Underwriters Laboratories)
ULC Listed
ASTM C1396
CSA-A82.27-M
ASTM E84
Federal Specification SS-L-30D