AG Design Library 
Submittal 
CSI 3 Part Spec 
SDS 
LIGHTROC® Lightweight Gypsum Board
LightRoc® gypsum wallboard is lighter in weight than traditional 1/2” drywall and is designed for use in wall and ceiling applications spaced no more than 24”o/c. LightRoc® is approved to be applied parallel or perpendicular to ceiling framing spaced up to 24” o/c, even when a hand applied or water-based texture is used for decoration.
The exceptional sag resistance of American Gypsum’s LightRoc Lightweight Gypsum Wallboard panels have been independently verified by Progressive Engineering, Inc. when tested in accordance with ICC-ES AC417 (Acceptance Criteria for 1/2" Inch Sag-Resistant Gypsum Ceiling Board), and PEI Standard No. 94-9 - Large Scale Ceiling Board Load Test Procedure.
American Gypsum products contain no asbestos and no detectable levels of formaldehyde.
Basic Uses
LightRoc® gypsum wallboard is designed for interior walls or ceilings in new residential construction, renovation projects or commercial work and may be attached to wood or metal framing by the use of screws, nails or adhesive. Some benefits of selecting LightRoc® include:
- Designed for use in wall and ceiling applications when the framing is spaced no more than 24”o/c.
- Lighter than traditional 1/2” regular wallboard.
- LightRoc® is approved to be applied parallel or perpendicular to ceiling framing spaced up to 24” o/c, even when a hand applied or water-based texture is used for decoration.
Greenguard
LightRoc® gypsum wallboard has achieved UL Environment’s GREENGUARD GOLD Certification. GREENGUARD Certified products are scientifically proven to meet some of the world’s most rigorous, third-party chemical emissions standards, helping reduce indoor air pollution and the risk of chemical exposure while avoiding in the creation of healthier indoor environments.
For more information, visit www.ul.com/gg.
Product Data
Sizes
| Thickness | Widths | Lengths | Edge Types |
|---|---|---|---|
| 1/2" (12.7mm) | 4' (1219mm) | 8' - 12' (2438mm - 3658mm) | Tapered |
| 1/2" (12.7mm) | 54" (1372mm) | 12' & 14' (3658mm & 4267mm) | Tapered |
Special lengths or edges may be available on special order. Consult your American Gypsum sales representative for details. Thermal Resistance "R" Value 1/2" = 0.50
Technical Data
Storage and 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 |
|---|---|
| Installation | ASTM C 840 Gypsum Association GA-216 Gypsum Association GA-214 |
| Surface Burning Characteristics | ASTM E 84 Flame Spread 0 Smoke Developed 0 |
| Non-Combustibility | ASTM E 84 |
| Hardness | ASTM C 473 |
| Flexural Strength | ASTM C 473 |
| Humidified Deflection | ASTM C 473 |
| Nail Pull Resistance | ASTM C 473 |
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.
Related Links
SDS ecoScorecard LEED CSI 3 Part Spec GREENGUARD Certification Limited WarrantyWhere to Buy?
Call (866) 439-5800 or Send Email
American Gypsum Company LLC has been manufacturing, selling, and distributing gypsum wallboard products for over half a century, servicing the drywall industry with quality products that are sold throughout the United States.
Copyright 2024 © American Gypsum Company, LLC. All rights reserved.