Roofing General Application Data

10. Shingles/shakes shall be at least double at all eaves.

11. Butts of the shingles/shakes in the first course on roofs shall project 1/2" (38.1 mm) from the edge of roof eaves to insure proper spill into gutters.

12. Shingles shall be spaced apart not less than 1/4" (6.35 mm), nor more than 3/8" (9.525 mm), 13. Shakes shall be spaced apart not less then 3/8", nor more than 5/8" (15.875 mm).

13. Shakes shall be spaced apart not less than 3/8" (9.525 mm), nor more than 5/8" (15.875 mm).

14. No. 1 shingles/shakes shall be applied with weather exposures consistent with the following table (Table 6):

15. Chimney flashing shall extend up the chimney to a height not less than 6 inches, and up the roof slope to a point equal in height to the flashing on the chimney but never less than 1 1/2 times the shingle/shake exposure. (All metal flashings should be painted).

16. Apron counter flashing shall extend to within 1" (25.4 mm) of the surface of the finished roof.

17. Where saddles or crickets are formed in back of chimneys, curves or similar vertical surfaces, they shall be carried not less than 10" (254 mm) under the shingles/shakes.

18. Step flashing shall be used where vertical surfaces occur in connection with slopes. They shall be formed of separate pieces. Flashing shall extend horizontally not less than 3" (76.2 mm) and up the vertical wall so that they shall be lapped by the counter flashing not less than 4" (101.6 mm). Shall be installed step fashion and each piece shall lap not less than 3" (76.2 mm). If other than masonry is used the flashing shall extend up the wall not less than 3" (76.2 mm) behind the sheathing paper.

19. Dormer flashings shall run 3" (76.2 mm) up under the sheathing paper and not less than 3" (76.2mm) horizontally.

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