Tempo:
Flat grain shingles wider than 200 mm (8 in.) are sometimes split and nailed as two shingles to avoid problems with cupping and warping.
Shakes Cedar hand-split shakes must not be less than 450 mm (18 in.) long and 100 mm (4 in.) wide, and no wider than 350 mm (133⁄4 in.). The butt thickness should be between 9 and 32 mm (3⁄8 and 11⁄4 in.) (Figure 103). Shakes may be applied over spaced or closed roof sheathing. When spaced sheathing is used (Figure 98), apply 19 × 89 mm (1 × 4 in. nominal) or wider strips on centre equal to the weather exposure at which the shakes are to be laid, but never more than 250 mm (10 in.). Closed roof sheathing is recommended for areas where wind-driven snow conditions prevail.
An exposure of 190 mm (71⁄2 in.) is recommended for 450 mm (18 in.) long shakes, and 250 mm (10 in.) for 600 mm (24 in.) long shakes. The minimum recommended roof pitch for hand-split shakes is 1:3. A 900 mm (36 in.) strip of No. 15 roofing felt should be laid over the sheathing boards at the eave line. The beginning or starter course of shakes should be doubled; for extra texture, it can be tripled. The bottom course or courses can be 380 mm (15 in.) or 450 mm (18 in.) shakes. After each course of shakes is applied, a 450 mm (18 in.) wide strip of No. 15 roofing felt should be laid over the top portion of the shakes, extending onto the sheathing. The bottom edge of the felt should be positioned above the butt at a distance equal to twice the weather exposure. For example, 600 mm (24 in.)
103 Installation of hand-split shakes width between 100 mm and 350 mm (4 in. and 133⁄4 in.) length not less than 450 mm (18 in.) thickness between 9 mm and 32 mm (3⁄8 in. and 11⁄4 in.)
450 mm (18 in.) No. 15 felt laid over top portion of each course eave protection double starter course fascia
Shakes Cedar hand-split shakes must not be less than 450 mm (18 in.) long and 100 mm (4 in.) wide, and no wider than 350 mm (133⁄4 in.). The butt thickness should be between 9 and 32 mm (3⁄8 and 11⁄4 in.) (Figure 103). Shakes may be applied over spaced or closed roof sheathing. When spaced sheathing is used (Figure 98), apply 19 × 89 mm (1 × 4 in. nominal) or wider strips on centre equal to the weather exposure at which the shakes are to be laid, but never more than 250 mm (10 in.). Closed roof sheathing is recommended for areas where wind-driven snow conditions prevail.
An exposure of 190 mm (71⁄2 in.) is recommended for 450 mm (18 in.) long shakes, and 250 mm (10 in.) for 600 mm (24 in.) long shakes. The minimum recommended roof pitch for hand-split shakes is 1:3. A 900 mm (36 in.) strip of No. 15 roofing felt should be laid over the sheathing boards at the eave line. The beginning or starter course of shakes should be doubled; for extra texture, it can be tripled. The bottom course or courses can be 380 mm (15 in.) or 450 mm (18 in.) shakes. After each course of shakes is applied, a 450 mm (18 in.) wide strip of No. 15 roofing felt should be laid over the top portion of the shakes, extending onto the sheathing. The bottom edge of the felt should be positioned above the butt at a distance equal to twice the weather exposure. For example, 600 mm (24 in.)
103 Installation of hand-split shakes width between 100 mm and 350 mm (4 in. and 133⁄4 in.) length not less than 450 mm (18 in.) thickness between 9 mm and 32 mm (3⁄8 in. and 11⁄4 in.)
450 mm (18 in.) No. 15 felt laid over top portion of each course eave protection double starter course fascia
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