Interior Lumber & Plywood



Introducing SaferWood Interior

SaferWood Interior treated with Thermex-FR meets model code and industry standards for pressure impregnated fire-retardant lumber and plywood. It is available in various grades and is suitable for most common construction applications including load bearing walls, wall sheathing, partition walls, mezzanines, shelving, stairs, floor sheathing and joists, plywood roof sheathing, roofing rafters, joists and trusses. Using Chemco’s proprietary process, SaferWood Interior affords the same standards of fire retardancy in interior applications that builders have come to expect from SaferWood Exterior products. UL-listed (Douglas Fir) and model building code compliant, including in some situations as a substitute for noncombustible building material, SaferWood Interior provides builders with the option of using real wood without compromise.

Durability and Maintenance

SaferWood Interior’s durability approximates that of untreated lumber. It is fully suitable for usage with plumbing, conduit, copper, galvanized truss plates and ductwork. It contains no ammonium phosphates, sulfates, halides or metals of any kind.

SaferWood Interior is intended for interior use only, where it will not be exposed to wet weather, other sources of moisture, and high humidity. This includes exterior
applications as well as interior environments such as damp crawl spaces and areas requiring direct contact with damp concrete and masonry. For bottom plates on concrete, it is recommended that CCA pressure treated wood products be utilized. For exterior products, it is recommended that SaferWood Exterior be used.

Because SaferWood Interior is pressure treated with a fire retardant chemical, no special maintenance is required to maintain its fire retardancy. However, as with any interior wood product, it must be kept free of structurally damaging pests and environmental conditions, to insure quality and longevity.

Easy Installation and Handling

SaferWood Interior looks and handles just like regular wood, and no special tools or procedures are required.

SaferWood Interior lumber can be cut and drilled, but not planed and sanded.

SaferWood Interior treated wood should be kept dry. It is recommended that any product stored out of doors be covered and kept off the ground, so that it does not serve as a wick for ground moisture. Proper ventilation and air circulation are important factors that, if subverted by overly restrictive sealing/storage techniques, may affect product performance.

Likewise, roof sheathing should be covered with felt or roofing, and not left exposed to the elements. As with any roof, natural airflow must be maintained to prevent moisture build up, condensation and excessive temperatures. Ventilation should be uniformly balanced to maintain overall consistency. Certain architectural features and roofing styles such as cathedral roofs, flat roofs, vaulted roofs, metal decks and rafter spaces blocked by skylights, will require special consideration.

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