Dimensions Guide

Manufacturer
Georgia-Pacific Gypsum Georgia-Pacific Canada
133 Peachtree Street 2180 Meadowvale Boulevard, Suite 200
Atlanta, GA 30303 Mississauga, ON L5N 5S3
Technical Service Hotline: [phone]
Description
ToughRock
®
Lite-Weight Gypsum Board has a noncombustible (per ASTM
E136), dimensionally stable, gypsum core. Facings and edge tapes are 100%
recycled paper. The front facing (side to be finished) and the long edges are
an ivory color; the back facing paper is gray. The ends are square cut, smooth
finished with no paper facing. It is manufactured to be lighter than traditional
Georgia-Pacific ToughRock Gypsum Board, making it easier to handle and
install – and more economical to transport.
Georgia-Pacific ToughRock Gypsum Board products are GREENGUARD and
GREENGUARD Gold Certified for low emissions of volatile organic compounds (VOCs).
Primary Uses
The 1/2( (12.7 mm) ToughRock Lite-Weight Gypsum Board is a wall or ceiling
covering material for use in new building construction or renovation work. It has
been specifically designed to perform like a ceiling board where improved sag
resistance is desired. It can be used on ceilings with 24( (610 mm) o.c. frame
spacing when a water based texture is applied. Always seal the boards with a
high-quality latex primer before applying texture. Insulation should not exceed
2.2 lbs./sf. (9.9 kg/m
2
). Please see Maximum Framing Spacing Table on page 2
for details.
ToughRock Lite-Weight Gypsum Board is manufactured with an ivory paper facing
designed to receive joint treatment, paint, wall covering, textured coatings or other
finish treatment. It is designed for direct attachment (screws, nails or adhesive) to
wood and metal framing and existing surfaces.
Limitations
• ToughRock Lite-Weight Gypsum Board is a nonstructural product and should not
be used as a nailing base to support heavy wall-mounted objects.
• It is intended for interior applications only, must be kept dry and should not be
used where exposure to moisture is extreme or continuous.
• Do not use ToughRock Lite-Weight Gypsum Board where there is prolonged
exposure to temperatures exceeding 125° F (52° C) and/or continuous exposure
to extreme humidity*; e.g., located adjacent to wood burning stoves, heating
appliances, steam rooms, showers, gang shower rooms and swimming pools.
* Consult water-based textures manufacturer’s literature if they are to be used.
Applicable Standards
Manufactured to meet ASTM C1396 Section 5 (Gypsum Wallboard) and
Section 12 (Gypsum Ceiling Board).
Building Code Conformity
ToughRock Lite-Weight Gypsum Board conforms to the requirements of the current
IBC, IRC and NBCC codes.
Sizes
Thickness, nominal 1/2( (12.7 mm) ±1/64( (0.4 mm)
Widths, nominal 4* (1220 mm) ±3/32( (2.4 mm);
54( (1372 mm) ± 3/32( (2.4 mm)
Lengths, nominal 8* (2440 mm) to 16* (4880 mm) ±1/4( (6.4 mm)
Edges
1/2( (12.7 mm) tapered edges.
Supplemental Materials
Fasteners: Nails, screws or adhesive.
Joint System: Tape, bedding compound and topping compound.
Trims: Corner bead, edge/casing bead, control joints, floor/ceiling runners and
channels.
Wall and ceiling textures.
Sealants.
Technical Data – Surface Burning Characteristics
Flame spread rating of 5 and smoke developed 0, when tested in accordance
with ASTM E84. The core is noncombustible when tested in accordance with
ASTM E136.
Application Standards
ToughRock Lite-Weight Gypsum Board shall be installed according to the Gypsum
Association Publication GA-216 “Recommended Specifications for the Application
and Finishing of Gypsum Panel Products” and ASTM C840 “Standard Specification
for Application and Finishing of Gypsum Board” for non-fire rated construction.
Methods
Installation methods for single or multi-layer construction involving attachment
using mechanical fasteners, adhesive or adhesive with supplemental fasteners are
numerous and varied. Refer to Gypsum Association publications for application and
installation details.
The installation method selected should be planned carefully to minimize the
number of end joints. ToughRock Lite-Weight Gypsum Board can be cut to the
necessary size by scoring the face paper with a sharp knife, then snapping away
from the cut face. The back paper is then cut or broken by snapping the board in
the opposite direction. All cut edges and ends are smoothed by rasping or other
suitable methods to form tight fitting joints when installed.
For sound rated assemblies, appropriate methods of installation are based on the
desired specified STC value required. These ratings and values require that all
details of the tested assemblies be followed. In addition to these details, the
installation methods outlined in Gypsum Association Publication GA-216 will
facilitate optimum performance through preferred construction practices.
Handling Precautions
Stack ToughRock Lite-Weight Gypsum Board flat on a level surface. As individual
sheets are removed for installation, they should be raised up on edge carefully and
carried in a vertical position. Appropriate handling is also outlined in Gypsum
Association Publications GA-216 and GA-801.
Take care to avoid impact, undue flexing and subsequent damage to board edges,
ends and corners. Avoid scuffing the face to be finished.
Handling and Use – Caution
This product may contain fiberglass which may cause skin irritation. Dust and
fibers produced during the handling and installation of the product may cause skin,
eye and respiratory tract irritation. Avoid breathing dust and minimize contact with
skin and eyes. Wear long sleeve shirts, long pants and eye protection. Always
maintain adequate ventilation. Use a dust mask or NIOSH/MSHA approved
respirator as appropriate in dusty or poorly ventilated areas.
Material Safety Data Sheet
Material Safety Data Sheet (MSDS) is available upon request or online at
www.buildgp.com/safetyinfo.
Board Decoration
ToughRock Lite-Weight Gypsum Board is designed to accept most types of paints,
texture and wall covering materials. Georgia-Pacific Gypsum strongly recommends
priming the surface with a full-bodied, quality latex primer before applying a final
Stamps/Signatures
continued
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