Soffit Board

ToughRock logo ToughRock® soffit board may be used in multi-family residential, commercial, institutional or industrial buildings as exterior ceilings or soffits that are protected from direct exposure to water. These designs may include such constructions as ceilings in carports, garages, open porches, canopies and walkways.

ToughRock® soffit board consists of a noncombustible (as described and tested in accordance with ASTM E 136), dimensionally stable gypsum core. ToughRock 5/8" Fireguard® soffit board is a UL classified gypsum board and can be used in a variety of fire-rated wood and steel framed assemblies. The product is surfaced on both faces and long edges with tan-colored 100% recycled paper. The ends are square cut, smooth finished with no paper facing.

Soffit Board

Dimensions

Edge

Standards

T&G

ASTM

FEDERAL

CSA

ToughRock® Soffit Board
Soffit board with treated paper face bonded to specially formulated core designed to resist sag and moisture. For exterior use such as outdoor building soffits, carports and outdoor applications where there is no direct exposure to weather.

1/2"
5/8"

4'
4'

8', 9', 10'
8', 9', 10'

•
•

C 931
C 1396

A82.27
M

Drill down in the categories below for detailed information, illustrations and performance characteristics for a variety of wall systems and assemblies using gypsum wallboards, sheathing, shaftliner and backer boards from Georgia-Pacific.

Also see CAD details for these assemblies.

The data relating to fire and sound-tested assemblies is based on the characteristics, properties and performance of materials and systems obtained under controlled test conditions as set forth under the appropriate ASTM standard, such as E 108 (fire), E 90 (sound) or E 72 (structural).

Area Separation Walls

Fire & Sound

Wood-Framed Wall
Steel-Framed Wall
Floor/Ceiling Wood-Framed
Exterior Wood-Framed Wall
Exterior Steel-Framed Wall
Column Fire Protection
Beam Fire Protection

Moisture-Resistant

Shaftwall & Stairwell

Sound Deadening

Wood-Framed Wall
Steel-Framed Wall
Floor/Ceiling Wood-Framed

For important product fire, safety, and use information, go to gp.com/safetyinfo.

Get Support for Gypsum Products
E-mail us or call the Technical Hotline
1-800-225-6119.

Para la información en español, envíenos un mensaje por correo electrónico o llámenos a la Linea de Asistencia Amiga 1-866-280-7379.

ToughRock® Wallboard Calculator
Instant, easy-to-use calculator tells you how much ToughRock gypsum wallboard you will need and other materials, including the right tools to get the job done. Use it now.

LEED® Certification?
Are you interested in products that may contribute to Leadership in Energy and Environmental Design (LEED) certification points? Products from Georgia-Pacific Gypsum may contribute in several categories for new construction, including:

Materials & Resources
Indoor Environmental Quality
Innovation & Design.

Find out more

	ToughRock® Gypsum Board Limited Warranty (USA) (881KB/1pgs)

	ToughRock® Gypsum Board Limited Warranty (Canada) (893KB/2pgs)

	Garantía limitada: ToughRock® placas de yeso (USA) (881KB/2pgs)

	Fire Safety Information: Fire Rated Products(65KB/2pgs)

	Safe Handling: ToughRock® Gypsum Products (65KB/1pgs)

	MSDS #71A: Paper-faced Gypsum Boards (53KB/5pgs)

	MSDS #71B: FireGuard® Gypsum Boards (55KB/6pgs)

	Fiche Signalétique: Panneau de Gypse avec Surface en Papier (54KB/5pgs)

	Fiche Signalétique: Fireguard® Gypsum Boards (57KB/6pgs)

	ToughRock® Gypsum Board Sustainable Materials Data Sheet (67KB/2pgs)

	ToughRock® Gypsum Board Sustainable Materials Data Sheet - Canada (58KB/2pgs)

	Fiche technique de matériaux durables Georgia-Pacific Gypsum: Panneau de gypse ToughRock® (58KB/2pgs)

ToughRock® Soffit Board Submittal 50KB/2Pgs)

ToughRock® Gypsum Board Wallworks Guide (1.5MB/9pgs)

Can I use gypsum board in ceilings at 24" o.c. support?

Do we need to use the 6" wide Type C battens over the H stud flanges in the area separation wall system?

What purpose do the aluminum angle clips serve in the area separation wall system?

What should we do if the gypsum board gets wet?

Can I use gypsum board in ceilings at 24" o.c. support?

According to the Gypsum Association publications GA-216 and GA-201, gypsum board could be applied in a ceiling framed 24" o.c. provided the board length is at right angles to the framing members. The Gypsum Association also mentions that a water-based texture should not be applied to any board applied to framing 24" o.c. The excessive amount of water in the texture could cause the board to sag. We always advise our customers to use either 5/8" board or CD ceiling board in such applications. Once the board sags, it is much more expensive to replace than to use the right product initially. Sag in the ceilings of new homes is a common complaint. Most of the time, research reveals it is not the board but job site conditions that cause the board to sag. Propane heaters combined with poor ventilation cause build-up of moisture in the house. A non-insulated (poly sheet) vapor barrier in the plenum also could cause board sag. The water in the texture evaporates through the board and into the plenum. If the vapor barrier has not been insulated prior to texture painting, the water vapor condenses against this surface and drips back onto the board.

Do we need to use the 6" wide Type C battens over the H stud flanges in the area separation wall system?

Older area separation wall designs required the web of H-stud flanges to be covered with 6" wide Type C gypsum board battens. The reason was very simple. In a fire test, the H-stud web exposed to the fire on one side would transmit the high temperature readily to the unexposed side and prematurely fail the test. The new design, which includes the wood frame wall as part of the assembly, simply requires that a 3/4" air space be left between the flange and the wood frame.

What purpose do the aluminum angle clips serve in the area separation wall system?

The aluminum alloy clips attach the area separation wall to the wood frame wall. In the event of a fire, the clips will melt at about 1,000°F, letting the burning wood frame wall fall away from the area separation wall. These clips are screw-attached to the web on every other H-stud and nailed or screwed to the wood top plates 48” o.c. maximum.

What should we do if the gypsum board gets wet?

Gypsum board should not be allowed to get wet; it should be covered if stored outside. However, there are situations where the board could get wet in transportation/storage or installed in-place. If the board gets wet in an installed in-place situation, first remove the sources of moisture. Then, allow the board to dry out thoroughly. Once the board is dry, examine it for paper-to-core bond failure, mold and mildew growth, nail pops and sag (in case of ceilings). Paper-to-core bond failure and board sag are irreversible damages and the board should be replaced. Mold can be cleaned using a vinegar and water solution or alternates (use care when using bleach or chlorine solutions). For nail pops, place a fastener an inch above or below any popped-up nail.

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Soffit Board

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