D-Blaze® from Viance, LLC. (a Dow-Dupont™ Company and Venator Materials joint venture) has obtained Underwriters Laboratories UL and ULC (UL Canada) certification listing for two-hour fire resistance for bearing wall assemblies. The fire-retardant treated wood (FRTW) assembly Design N° V335, using D-Blaze fire-retardant treated lumber and plywood, was certified under the ANSI/UL 263 standard for the U.S. and CAN/ULC-S101 for Canada for two-hour fire resistance (fire exposure on the interior face). The assembly can be completed with brick, stucco, fibre cement or other UL approved exterior facings. The FRTW thus meets the relevant requirements for construction materials of all North American building codes for lumber and plywood products, including for commercial, healthcare and multiple occupant buildings. D-Blaze has also received GREENGUARD Gold Certification (part of UL Environment) for very low organic carbon emissions (see pinfa Newsletter n° 72)
“UL® certifies D-Blaze® fire retardant treated wood 2-hour wall assembly” 10 May 2018 https://treatedwood.com/d-blaze-fire-retardant-treated-wood-frtw-earns-greenguard-gold-certification/