What is the maximum exposure for 24 inch No. 2 preservative-treated taper sawn wood shakes on a slope of 4:12 or steeper?

What is the maximum exposure for 24 inch No. 2 preservative-treated taper sawn wood shakes on a slope of 4:12 or steeper?

• A. 8 inches
• B. 5-1/2 inches
• C. 7-1/2 inches
• D. 10 inches

Answer: (C)

Exposure is how much of each shake remains visible on the roof after installation. The amount you can expose depends on the shake length, its grade, and the roof slope to ensure proper weather resistance and fastening. For a 24-inch No. 2 preservative-treated taper sawn shake, the rules allow a larger exposure on steeper roofs because water runs off more quickly. On a slope of 4:12 or steeper, the maximum exposure is seven and a half inches. On gentler slopes, the exposure must be smaller (about five and a half inches) to maintain watertightness. So, the maximum exposure for the given condition is 7-1/2 inches.

Exposure is how much of each shake remains visible on the roof after installation. The amount you can expose depends on the shake length, its grade, and the roof slope to ensure proper weather resistance and fastening.

For a 24-inch No. 2 preservative-treated taper sawn shake, the rules allow a larger exposure on steeper roofs because water runs off more quickly. On a slope of 4:12 or steeper, the maximum exposure is seven and a half inches. On gentler slopes, the exposure must be smaller (about five and a half inches) to maintain watertightness.

So, the maximum exposure for the given condition is 7-1/2 inches.