Georgia-Pacific ToughRock Flexroc Flexible Gypsum Board, Curved Installations
ToughRock Flexroc Flexible Gypsum Board for Curved Installations
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ToughRock® Flexroc Gypsum Board

  • High-flex gypsum board
  • Designed for inside and outside radius curve installations
  • Comes from the factory as a ready-to-finish product
Meet the strong-yet-flexible gypsum board for your radius curve installations

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. ToughRock® Flexroc® Gypsum Board is manufactured to meet or exceed the requirements of ASTM C1396, section 5; CSA-A82.27-M; and Federal Specification SS-L-30D, Type III, Grade R. Its noncombustible (as described and tested in accordance with ASTM E136), dimensionally stable gypsum core is sandwiched between face layers of 100% recycled paper.


Designed for high flex installations

Special Application

Specially designed for inside and outside radius curve installations


Physical Properties

nominal inches: 1/4″ (6.4 mm) , ± 1/64″ (0.4 mm)


nominal: 4′ (1220 mm) , ± 3/32″ (2.4 mm)


8’ (2400 mm) ± ¼” (6.4 mm)


lbs./sq. ft., nominal (kg/m2): 1.1 (5.4)1

R Value

°F•ft2•hr/BTU (m2•K/W): 0.22 (0.04)2

1Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2Per Gypsum Association document GA-235.

Product Resources

Tech Guides
Safety Data

Product FAQs

What happened to Georgia-Pacific's regular 1/2" gypsum board?

Georgia-Pacific has always made a quality 1/2″ paper-faced gypsum board. In the first half of 2015, Georgia-Pacific Gypsum introduced an upgraded 1/2″ paper-faced gypsum board called ToughRock® Fireguard 45™ Gypsum Board. The improved 1/2” board has enhanced fire-resistive properties and can replace standard and lightweight gypsum board in ALL 1/2″ wall and ceiling assemblies, including 24″ o.c. framed ceilings. ToughRock Fireguard 45 Gypsum Board is a standard weight 1/2″ interior wallboard that has achieved a 45-minute UL classified fire rating in select assemblies (consult local codes for actual requirements). For additional information concerning fire ratings and fire safety, go to

Research used to shape the innovation process considered consumer concerns about home fire safety. Learn more>>

Can I use gypsum board in ceilings at 24" o.c. support?
Should gypsum board be installed vertically or horizontally?
How often is a control joint required?

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