Chemicals or processes involved with topical applications and treatments, including but not limited to fire coatings, may be detrimental to wood strength and/or corrosive to metal connectors. In addition, pressurized applications and treatments may cause excessive swelling and/or cupping in wood I-joists and laminated veneer lumber.
Boise Cascade has not evaluated the effects of any pressure or topical applications or treatments on its AJS® Joist, BCI® Joist and Versa-Lam® products.
Determining the effects of pressure or topical applications and treatments, as well as all performance claims, is the responsibility of the coating manufacturer and/or treater. ICC-ES® AC14 Acceptance Criteria for Prefabricated Wood I-joists is a relevant reference when evaluating the effects of fire coatings on wood I-joists and metal connectors.
Boise Cascade contracts with APA-The Engineered Wood Association for certification of our AJS® Joist, BCI® Joist and Versa-Lam® products. APA has published a Technical Topics (TT-126) on Applicability of APA Trademarks on EWP Surface-Coated with Fire Protective Coatings indicating, unless specifically approved, the APA trademark does not apply after the application of a fire protective system (see page 2).
Boise Cascade will honor warranty claims on its products which arise from non-conformities due to manufacturing. For the complete warranty, please see Boise Cascade’s sales terms and conditions at www.bc.com/terms-conditions/sales-terms-and-conditions/.
This technical note supersedes all previous technical note publications and policy letters regarding the application of pressure or topical applications and treatments, including but not limited to fire coatings, on Boise Cascade products.