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Fire Retardant Lumber

Dricon Biewer Lumber

Dricon FRTW meets Class A requirements for flame spread and greatly reduces smoke development and includes a 40-year limited roof system warranty which covers repair and replacement and is transferable.

In addition, Dricon FRTW is EPA registered as a preservative, can be used in contact with concrete that contacts the ground and is backed by a 40-year limited preservative warranty. Biewer FRTW combines the flexibility and environmental advantages of wood with reliable fire protection.

Available sizes:

  • 4×8 Plywood Thickness: ½”, 5/8”, ¾”
  • Lumber:
    • 8ft: 2″x4″
    • 12ft: 2″x6″, 2″x8″, 2″x10″, 2″x12″

Information from the manufacturer’s product page.

PyroGuard

Pyro-Guard is pressure-impregnated, interior fire-retardant treated lumber and plywood for enclosed structural applications. This lumber has been strength-tested after prolonged exposure to elevated temperatures and moisture to verify its strength characteristics when used in roof systems and other recommended applications.

Pyro-Guard plywood span ratings and lumber design value adjustments are based on strength testing after prolonged exposure to high temperatures experienced in roof applications.

Available sizes:

  • 4×8 Plywood Thickness: ½”, 5/8”, ¾”
  • Lumber:
    • 8ft: 2″x4″
    • 12ft: 2″x6″, 2″x8″, 2″x10″, 2″x12″

Information from the manufacturer’s product page.