1507.8.7 Application.
BC § 1507.8.7
Wood shingles shall be laid with a side lap not less than 1 1/2 inches (38.1 mm) between joints in adjacent courses, and not be in direct alignment in alternate courses. Spacing between shingles shall be 1/4 to 3/8 inches (6.4 to 9.5 mm). Weather exposure for wood shingles shall not exceed that set in Table 1507.8.7. Table 1507.8.7Wood Shingle Weather Exposure and Roof Slope Roofing MaterialLength (inches)GradeExposure (inches) 3:12 pitch to < 4:124:12 pitch or steeperShingles of naturally durable wood 16 No. 1 No. 2No. 33.753.53543.5 18 No. 1 No. 2No. 34.2543.55.54.54 24 No. 1 No. 2No. 35.755.557.56.55.5 For SI: 1 inch = 25.4 mm.













