Preservative Treated Lumber and Timbers
Copper-based wood preservatives have been in use for decades in North America and have proven safe and effective in countless residential, non-residential, and industrial applications, greatly extending
the service life of wood and helping to conserve a renewable resource. Copper-based wood preservatives can be used to treat any species or species group available in North America. Certain western species such as Douglas-fir and Hem fir require incising. This is done on a machine prior to treatment that creates many little slits in the wood allowing the preservative to penetrate deep enough to meet industry standard. The addition of colorants or stains to the lumber is used to enhance consumer demand in certain markets.
Uses: Decking, fencing, railings and accessories, joists, piling and poles, sill plate, sub flooring
Species: Douglas-fir, Hem fir, Southern Yellow Pine, Spruce-Pine-Fir
Color: Available browntone, cedartone, and traditional green
Incising: Refractory species such as Douglas-fir and Hem fir require incisions in the wood to allow the preservative to penetrate deeply enough to meet penetration and retention requirements for specified uses, such as Ground Contact
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 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.