2001 Rexford Road
Charlotte, NC 28211
Toll Free: (800) 628-4662
Technical Information: (800) NATIONAL (628-4662)
Technical Fax Line: (800) FAXNGC1 (329-6421)
E-mail: techservice@nationalgypsum.com
Web site: http://www.Nationalgypsum.com
Web site: http://www.Nationalgypsum.com/espanol
Gypsum drywall shaft construction has become the preferred alternative to traditional masonry shafts. One-inch Shaftliner™ BRAND board was developed as a lightweight, easy-to-install replacement for masonry in the interior core of buildings for shaftwalls, stairwells, other vertical chases and mechanical enclosures. Shaftliner board is also used as a component of 2" solid partitions, and area separation walls.
Historically, heavy masonry weighing 20 to 45 lbs. per square foot was used for shaftwall construction. With the use of Shaftliner, shaftwall assemblies weigh in at a remarkably low 10 to 13 lbs. per square foot.
The benefits of gypsum drywall shaft systems go far beyond the difference in weight alone. The core wall of a shaft can be installed from the exterior of the shaft and requires no scaffolding. Erection is speedy and clean. Shaftliner also provides excellent sound control and can achieve the fire ratings necessary for today's building construction. Best of all, gypsum shaftwall systems are more economical than masonry shaft construction.
National Gypsum produces Shaftliner board with green moisture resistant paper or purple moisture/mold/mildew resistant paper on both sides with a beveled edge configuration allowing for simple installation into the Shaftwall System framing.
Cavity Shaftwall systems are a nonload-bearing drywall partition made up of two basic components, gypsum board and metal framing. Gypsum board includes 1" Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP panels, 1/2" Fire-Shield C and 5/8" Fire-Shield gypsum board face panels. 1/2" XP Fire-Shield C or 5/8" Fire-Shield gypsum board face panels may be utilized for extra protection against mold and mildew. The framing includes I-Studs, C-T Studs and C-H studs with integral tabls/flange which hold the panels in place and J Track for runners at top and bottom, as well as vertically at partition ends and to frame openings.
ICC ES, Inc. Legacy Report 89-35.01
Gold Bond I-Stud Cavity Shaftwall System
ICC ES, Inc. Legacy Report 95-25B
Gold Bond I-Stud Cavity Shaftwall System
ICBO ES, Inc. ER-3579
Gold Bond I-Stud Cavity Shaftwall System and
Horizontal Shaftwall Systems
- The Cavity Shaftwall system was developed to enclose elevator shafts, stairwells and other vertical chases in buildings where it is advantageous to erect these walls from one side only and where fire resistance and resistance to air pressures are required.
Note: Cavity Shaftwall Systems have been tested as complete assemblies. Substitution of components may adversely affect system performance. For information on system requirements contact National Gypsum's Technical Service at 1-800-NATIONAL® (1-800-628-4662).
- Although the Cavity Shaftwall system is nonload-bearing, this system has been designed and tested to withstand positive and negative air pressure forces exerted by high-speed, high-rise elevators.
- The Cavity Shaftwall systems have been fire tested and achieved fire resistance ratings of 1, 2 and 4 hours. All components are noncombustible.
- The Shaftwall system is very lightweight compared to conventional shaftwalls, weighing approximately 10 pounds per square foot of wall when finished with two layers of 1/2" Fire-Shield C wallboard.
- Shafts can be quickly enclosed under most conditions in which installers can work well before temperature limitations for finish wallboard applications are necessary.
- 1" Shaftliner is faced with light green moisture resistant paper and Shaftliner XP is faced with purple moisture/mold/mildew resistant paper for protection against weather during installation.
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