Preservative Treated Lumber and Timbers
Wood is a combustible material that will burn when exposed to fire. Fire retardant treated lumber and plywood are pressure impregnated with fire retardant chemicals that go deep into the wood, not just on
the surface. These chemicals slow the spread of flames and encourage the development of a char layer on the surface which insulates the wood below and slows fire growth. This process is designed to slow down the spread of flame and reduce smoke development because of fire, to give building occupants more time to escape. Fire retardant treated lumber and plywood must be specified based on end use, whether for interior or exterior, as the treatment process varies depending on end use. Interior use is limited to applications not exposed to weather or wetting.
Uses: Floor joists, floor sheathing, partition walls, plywood sheathing, rafters, roof trusses, sill plate, sub flooring, studs, wall sheathing, 1 & 2 Hour Wall Assemblies
Species: Douglas-fir, Hem fir, Southern Yellow Pine, Spruce-Pine-Fir
Color: Clear. Typically, a red dye is added to the solution to distinguish it from untreated wood
Incising: Not applicable
Allweather Wood fire retardant treated plywood is treated with the same preservatives as Allweather Wood fire retardant treated lumber and meets the same flame spread and smoke developed index of 25 or less under ASTM E84. The product meets all U.S. major model building code requirements. Allweather Wood fire retardant treated plywood is backed by a 50-Year Limited Warranty.
Uses Floor sheathing, roof and wall sheathing, sub flooring, steps and stairways, 1 & 2 Hour Wall Assemblies, platforms, stages, mezzanines, partition walls, interior partitions, backing for electrical panels
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Preservative treated wood can be used in a variety of building applications including interior, exterior, above ground, ground contact, marine, and fire retardant. Voluntary wood preservation standards are developed by the American Wood Protection Association (AWPA), a non-profit organization founded in 1904. AWPA Standards are written to safely and effectively extend the service life of preservative treated wood and are universally specified for wood preservation in the United States. AWPA Standards are also recognized worldwide.
The AWPA Use Category System (UCS) provides a simple way of using AWPA Standards. All preservative treated wood products can be placed into one of five use categories, based upon biodeterioration hazard and expected product performance. Fire retardant treated wood products are placed in their own unique use category class. The advantage of this system is simplicity, assisting specifiers and other users in the selection of the appropriate preservative treated wood product for a particular project.
Allweather Wood preservative treated wood products are manufactured to AWPA industry standards.
Allweather Wood ranks as the largest waterborne preservative treated lumber and plywood manufacturer in the western United States. With treating plants in California, Colorado, Oregon, and Washington, Allweather Wood treats a variety of wood species and preservatives including copper, borates, and fire retardants. No matter what you are building, Allweather Wood preservative treated lumber and plywood is ready for whatever nature brings your way.
Allweather Wood preservative treated lumber and plywood are available through lumberyards and home improvement retailers. Dealers and distributors are encouraged to contact their local Allweather Wood representative. Locations and general information may be found at AllweatherWood.com.