This uniform-density fiberboard uses cellulosic wood fibers with additives to improve strength and moisture resistance. It is available in high-density versions in 1/2" and 1" thicknesses, and regular-density in 1/2" thickness.

Applications include:

• Use under fully adhered EPDM single ply membrane (high-density only)
• Use under mechanically fastened roof systems
• Use under loose-laid ballasted roof systems

  MSDS: Wood Products - Asphalt Impregnated and/or Coated (87KB/6pgs)