Press Releases

September 28, 2016

Type III-B Application of LP® FlameBlock® Fire-Rated OSB Sheathing Provides Cost-Saving Solution for Denver Framing Company

NASHVILLE, Tenn. (Sep. 28, 2016)- RT Framing of Denver, Colorado, recently constructed Belleview Block B, a multifamily project using LP® FlameBlock® Fire-Rated OSB Sheathing.  

RT Framing is a framing and drywall company specializing in multifamily and commercial construction projects. In order to meet local fire codes, Russell Beilby, Vice President at RT Framing, used LP FlameBlock sheathing as a code-compliant component of a two-hour fire-rated exterior wall assembly throughout the 330-unit Type III-B building. He found the product provided a cost-saving solution, as he was able to save on labor costs and equipment rentals by only using one layer of LP FlameBlock sheathing compared to two layers of gypsum.

LP FlameBlock Fire-Rated OSB Sheathing carries a Class A and 30-minute flame spread rating due to its proprietary non-combustible, fiberglass-reinforced Pyrotite® treatment. Using LP FlameBlock sheathing in fire-rated wall assemblies reduces dead load and wall thickness versus common alternative assemblies.

As a result of his decision to use LP FlameBlock sheathing, Beilby achieved a simpler and more efficient installation process, particularly on the higher floors of the structure.

“I decided to use LP FlameBlock not just for the labor-saving aspect, but for the means and methods,” said Beilby. “Putting on one sheet is simple because you can lean through the studs. It’s the second sheet that causes difficulty because you have to rent equipment like cherry pickers and boom lifts, which can run about $6,000 a month. I chose LP FlameBlock because there would be no need for a second layer of product.”

To read the full case study spotlighting RT Framing’s use of LP FlameBlock, visit

To learn more about LP FlameBlock, visit




About LP Building Products Louisiana-Pacific Corporation is a leading manufacturer of quality engineered wood building materials including OSB, structural framing products, and exterior siding for use in residential, industrial and light commercial construction. From manufacturing facilities in the United States, Canada, Chile and Brazil, LP products are sold to builders and homeowners through building materials distributors and dealers and retail home centers. Founded in 1973, LP is headquartered in Nashville, Tennessee, and traded on the New York Stock Exchange under LPX.