Which gypsum board type is used on curved walls?

Which gypsum board type is used on curved walls?

• A. 54 x 12 x 1/4 type x
• B. 54 x 8 x 1/2 type x
• C. 4 x 8 x 5/8 MR board
• D. 4 x 8 x 1/4 flexboard

Answer: (D)

Curved walls need a material that can bend without cracking. A 1/4-inch thick gypsum board designed to be flexible, often called flexboard, is specifically made to curve around radii and still finish cleanly. It typically comes in standard sheet sizes like 4x8, which makes it practical for curved surfaces. Thicker boards, such as 1/2 inch or 5/8 inch, are rigid and don’t bend smoothly to curved contours; moisture-resistant boards are also generally rigid and intended for damp areas, not for curved walls. So the best choice for curved walls is the thin, flexible gypsum board.

Curved walls need a material that can bend without cracking. A 1/4-inch thick gypsum board designed to be flexible, often called flexboard, is specifically made to curve around radii and still finish cleanly. It typically comes in standard sheet sizes like 4x8, which makes it practical for curved surfaces.

Thicker boards, such as 1/2 inch or 5/8 inch, are rigid and don’t bend smoothly to curved contours; moisture-resistant boards are also generally rigid and intended for damp areas, not for curved walls. So the best choice for curved walls is the thin, flexible gypsum board.