| Grades |
Premium Grade: clear heartwood,
100% edge grain |
 |
| Lengths |
24-inch (610 mm), 18-inch (455mm) |
| Thickness |
1/2 inch (13 mm) Medium,
3/4 (19 mm) Heavy, minimun
butt thickness |
| Width |
Random, 4-inch (100 mm) minimum
14-inch (350 mm) maximum |
| Roof-Pitch |
4:12 minimum
(lower slopes require special application) |
| Exposure |
|
| |
24 Inch |
18 Inch |
| Pitch |
Premium No. 1
Blue Label |
Premium No. 1
Blue Label |
| 4:12 or > |
10"
250 mm |
7 1/2"
190 mm |
7 1/2"
190 mm |
5 1/2"
140 mm |
| Walls |
10 1/2"
263 mm |
10"
250 mm |
8 1/2"
210 mm |
7 1/2"
190 mm |
|
