Interior Ceiling Gypsum Board
1/2" Interior Ceiling Board is specifically formulated to meet the need for a lower weight ceiling panel with increased integrity in its gypsum core, making its sag resistance equivalent to 5/8" type X wallboard. For interior ceilings where framing is spaced up to 24" o/c, Interior Ceiling Board is the ideal choice, especially when water-based textures are to be used. The wallboard panels consist of a fire-resistant gypsum core encased in 100% recycled natural-finish paper on the face side and sturdy liner paper on the back side. The face paper is folded around the long edges to reinforce and protect the core, with the ends being square-cut and finished smooth. Long edges of the panels are tapered, allowing joints to be reinforced and concealed with a joint compound system.
Gypsum wallboard manufactured by American Gypsum contains no asbestos.
5/8" wallboard panels were once considered the best product for ceiling applications where the framing is spaced up to 24" o/c. However, product weight has always been a hindrance to proficient construction. The lighter weight 1/2" Interior Ceiling Board is specifically designed for interior ceilings in standard residential and commercial applications where framing members are spaced up to 24" o/c and a water-based texture will be used.
Interior ceiling gypsum wallboard has attained the GREENGUARD Indoor Air Quality Certified status and GREENGUARD Children & Schools Indoor Air Quality Certified status. For more information Click Here.
|1/2" (12.7mm)||4' (1219mm)||8' - 12' (2438mm - 3658mm)||Tapered|
Special lengths may be available on special order. Consult your American Gypsum sales representative for details.
Storage & Handling
Gypsum board does not generate or support the growth of mold when it is properly transported, stored, handled, installed, and maintained. However, mold spores are present everywhere and when conditions are favorable; mold can grow on practically any surface. GYPSUM BOARD MUST BE KEPT DRY to prevent the growth of mold.
Gypsum board must be stored in an area that protects it from adverse weather conditions, condensation, and other forms of moisture. Job site conditions that can expose gypsum board to water or moisture must be avoided.
Gypsum board must be protected during transit with a weather-tight cover in good condition. Plastic shipping bags are intended to provide protection during transit only and must be promptly removed upon arrival of the load. Failure to remove the shipping bag can increase the likelihood of developing conditions favorable to the growth of mold.
Gypsum board that has visible mold growth must not be used. For additional information, refer to Gypsum Association publication,
"Guidelines for the Prevention of Mold Growth on Gypsum Wallboard" (GA-238).
Gypsum board must be stored off the ground and under protective cover. Sufficient risers must be used to assure support for the entire length of the wallboard to prevent sagging.
Gypsum board must be delivered to the job site as near to the time it will be used as possible. Individuals delivering gypsum board to jobsites should ensure that it is carried, not dragged, to place of storage/installation to prevent damage to finished edges.
Gypsum board shall always be stacked flat - NEVER on edge or end. Gypsum board stacked on edge or end is unstable and presents a serious hazard should it accidentally topple. Gypsum board should be placed so weight is evenly distributed and the floor is not overloaded.
|Manufacturing||ASTM C 1396 section 12 (C 1395)
Federal Specification SS-L-30D Type III
|Installation||ASTM C 840
Gypsum Association GA-216
Gypsum Association GA-214
|Surface Burning Characteristics||ASTM E 84
Flame Spread 15
Smoke Developed 0
LEED / Green
Our products can contribute to the following credits within the Materials and Resources (MR) category.
- LEED MR Credit 2: Construction Waste Management
- LEED MR Credit 4: Recycled Content
- LEED MR Credit 5: Regional Materials
Our products can contribute to the following credit within the Indoor Environmental Quality (IEQ) category.
- LEED IEQ Credit 4.6: Low-Emitting Materials - Ceiling and Wall Systems (SCHOOLS ONLY)
To learn more please click the LEED link at right.