SMOOTHROC® Gypsum Board
Description
SMOOTHROC® gypsum wallboard has a uniquely tapered and slightly rounded edge to help minimize ridging and beading, but otherwise performs identical to traditional drywall. This unique edge design helps to neutralize the effects of slight gypsum panel or stud misalignments, joint imperfections, and damaged board edges. SMOOTHROC gypsum wallboard consists of a fire-resistant gypsum core that is 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.
SMOOTHROC gypsum wallboard is available in: 1/2" panels with a regular core for use in non-fire rated applications and a 5/8" Type X core for use in fire-rated assemblies.
Gypsum wallboard manufactured by American Gypsum contains no asbestos.
Basic Uses
SMOOTHROC gypsum wallboard is used as a covering material for walls or ceilings in new building construction or renovation work. It is designed for direct attachment by screws, nails or adhesive to wood or metal framing and even existing surfaces.
The SMOOTHROC Gypsum wallboard edge design compensates for extreme temperature and or humid conditions that cause “ridging” or “beading” and also for joint deformation resulting from framing imperfections. Joints stay smooth because they are pre-filled with a fast setting joint compound, which hardens chemically into an extraordinarily well bonded joint, and shrinkage of the joint is virtually eliminated.
GREENGUARD
Product Data
Sizes
| Thickness | Widths | Lengths | Edge Type |
|---|---|---|---|
| 1/2" (12.7mm) | 4' (1219mm) | 8' - 14' (2438mm - 4267mm) | Tapered with rounded edge |
| 1/2" (12.7mm) | 54" (1372mm) | 12' - 14' (3658mm- 4267mm) | Tapered with rounded edge |
| 5/8" (15.9mm) | 4' (1219mm) | 10' - 14' (3048mm - 4267mm) | Tapered with rounded edge |
| 5/8" (15.9mm) | 54" (1372mm) | 12' (3658mm) | Tapered with rounded edge |
Special lengths or edges may be available on special order. Consult your American Gypsum sales representative for details.
Technical Data
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.
Applicable Standards
| Manufacturing | ASTM C 1396 section 5 (C 36) Federal Specification SS-L-30D Type III (1/2" SmoothRoc) Federal Specification SS-L-30D Type III Grade X (5/8" SmoothRoc Type X) |
|---|---|
| Installation | ASTM C 840 Gypsum Association GA-216 Gypsum Association GA-214 |
| Surface Burning Characteristics | ASTM E 84 Flame Spread 15 Smoke Developed 0 |
Fire Resistance Ratings
LEED / Green
LEED Contributions
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.