ToughRock® Flexroc® Gypsum Board
High-flex ToughRock® Flexroc® gypsum board is designed for inside and outside radius curve installations including archways, columns, curved partition walls and curved stairways. The strong yet flexible 1/4" board can be used for many walls, partitions, stairways and ceilings in both new construction and remodeling projects.
It has a noncombustible (as described and tested in accordance with ASTM E 136), dimensionally stable gypsum core sandwiched between face layers of 100% recycled paper. The ivory front face paper is formed along each edge, wrapped around and sealed to strong liner paper on the back side.
ToughRock Flexroc gypsum board comes from the factory as a ready-to-finish product. The long edges are tapered. After installation, the ends, edges, corners and fastener heads are normally concealed with joint treatment to produce a smooth, seamless surface prior to final decoration.
1/4" ToughRock Flexroc gypsum board has a Class A or Class 1 flame spread rating. 1/4" ToughRock Flexroc gypsum board can be formed to a curve with a short radius.
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E-mail us or call the Technical Hotline 1-800-225-6119.
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Q:
What should we do if the gypsum board gets wet?
A:
According to the Gypsum Association publication GA-231, 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. Lay the board on a flat surface and allow it 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 the 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 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.
Q:
Should gypsum board be installed vertically or horizontally?
A:
While gypsum boards are stronger in one direction, they may be installed either
vertically or horizontally on wood or steel studs. If the boards are to be used
in a fire rated assembly then use the board orientation that is stated in your specific
rated assembly.
Q:
How often is a control joint required?
A:
The requirement for ceilings and walls is the same. A control joint should be installed
every 30 feet when there is not perimeter relief. When there is perimeter relief,
control joints can be installed every 50 feet.
