Barrier Technology

03 November 2010

Wall Assembly U349 (Two Hour Exterior wall - Type IIIA Construction) Approved for Steel Stud Construction

Barrier is proud to announce that Underwriters Laboratories (UL) has recently issued an engineering evaluation approving the use of steel studs in UL Fire-Resistive Wall Assembly U349, a two-hour exterior wall that uses two-sided coated LP® FlameBlock® to replace a double layer of exterior gypsum wallboard.

UL U349 has been designed specifically for wall applications in buildings of Type IIIA construction, which allows for the use of fire-retardant-treated wood in the exterior walls of commercial and multi-occupancy buildings such as student housing, senior housing, medical care facilities, mixed-use retail and residential, hospitality (hotel/motel) and other residential as well as non-residential uses. Prior to the new engineering evaluation, builders building to U349 were required to use fire-retardant-treated studs in the exterior walls, a requirement that some found difficult to meet due to sourcing constrictions. Thus, the ability to use steel studs give architects greater leeway in wall design and contractors greater sourcing options.

A live construction camera picture of a building being built with wall assembly U349 is provided: Click HereFire rated sheathing, fire rated osb, fire rated plywood, fire resistant sheathing, fire resistant osb, fire resistant plywood, multifamily construction, small cap, otcbb, ibtgf, barrier, Blazeguard, Mycoguard, fire rated paint, intumescent paint, class a flame spread, class a wall assembly, class c wall assembly, mold resistant, mildew resistant, fire retardant plywood, fire retardant osb, fire retardant sheathing, frt, sips, fire rated structurally insulated panels, thermal barrier, fire rated wall assemblies, fire rated commercial modular roofing, fire rated modular construction, green building products, leed, electrical panel backer board, sips, wildfire protection, forest fire protection, non combustible exterior wall sheathing, ignition resistant exterior wall sheathing, ignition resistant eaves, non combustible eaves, ignition resistant soffets, non combustible soffets, esr-1365, wui approved, wui listed, California state fire marshal approved building materials, specified building product, architectural specifications, builders specs, LP® FlameBlock®, Party Wall, Wall Assembly, Pyrotite®, sheathing, OSB


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Location: Watkins, Minnesota, United States

Barrier develops, manufactures, and markets proprietary fire resistant building materials designed to help protect people and property from the destruction of fire. Barrier's award-winning Blazeguard® structural wood panels exceed International Building Code requirements in every targeted fire test and application. Blazeguard® is coated with Barrier's patented, non-toxic, non-combustible Pyrotite formulation, which releases water when exposed to the heat of fire.