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National Gypsum Introduces XP® Fire-Rated 5/16” Radius Wall


National Gypsum announces its newest innovation, Gold Bond® BRAND XP® Fire-Rated 5/16” Radius Wall, for radius applications requiring fire-rated assemblies.

XP Fire-Rated 5/16” Radius Wall is used in double-layered construction. A one-hour UL tested assembly can be achieved with two layers, and a two-hour UL tested assembly can be achieved with four layers.

“More creative design options become available by using XP Fire-Rated Radius Wall instead of traditional 5/8-inch gypsum board,” said Kelly Guinsler, Gypsum Product Manager for National Gypsum. “Designs can include convex and concave walls with a two-foot minimum radius. In addition, this gypsum board provides the best resistance to abrasion and mold in the industry compared to standard gypsum board products.”

National Gypsum Introduces XP® Fire-Rated 5/16” Radius Wall

The special PURPLE® XP paper protects against mold, mildew and moisture, and is also abrasion-resistant. Combined with a denser core, XP Fire-Rated Radius Wall provides greater resistance to surface abuse when tested.

XP Fire-Rated 5/16” Radius Wall scores and snaps easily, with no special handling requirements. Tapered edges allow joints to be reinforced with ProForm® BRAND Joint Tape and concealed with ProForm BRAND Ready Mix or ProForm BRAND Quick SetTM Setting Compounds. For optimum resistance against mold and mildew, ProForm BRAND XP® Ready Mix is recommended for use.

For more information, contact your local National Gypsum representative. For technical information, call 1-800-NATIONAL (1-800-628-4662) or visit

About National Gypsum

National Gypsum is a fully integrated manufacturer and supplier of building products used worldwide. Primary emphasis is on Gold Bond® BRAND gypsum board, including the PURPLE® family of drywall products; ProForm® BRAND interior finishing products; PermaBase® BRAND cement board products; eXP® fiberglass-faced interior and exterior gypsum panels; and DEXcell® BRAND roofing products.

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