In a shower installation with 1/2 inch WR gypsum board and tile attached using adhesive, what is the maximum spacing of ceiling joists?

In a shower installation with 1/2 inch WR gypsum board and tile attached using adhesive, what is the maximum spacing of ceiling joists?

• A. 12 inches
• B. 16 inches
• C. 24 inches
• D. 8 inches

Answer: (A)

In a shower installation that utilizes 1/2 inch WR (Water Resistant) gypsum board, the maximum spacing of ceiling joists should be no more than 12 inches on center. This tighter spacing is essential because showers are exposed to higher humidity and moisture levels, which can put more stress on the ceiling structure. The closer spacing helps ensure that the gypsum board is adequately supported, reducing the risk of sagging or structural failure due to the weight of the tile and the potential for water damage. By aligning the joist spacing with the recommended guidelines for this type of installation, builders can enhance the durability and longevity of the shower environment.

In a shower installation that utilizes 1/2 inch WR (Water Resistant) gypsum board, the maximum spacing of ceiling joists should be no more than 12 inches on center. This tighter spacing is essential because showers are exposed to higher humidity and moisture levels, which can put more stress on the ceiling structure. The closer spacing helps ensure that the gypsum board is adequately supported, reducing the risk of sagging or structural failure due to the weight of the tile and the potential for water damage. By aligning the joist spacing with the recommended guidelines for this type of installation, builders can enhance the durability and longevity of the shower environment.