Lap sidings can be installed horizontally or vertically. For horizonal applications, start with the bottom course and work up with channels pointing upwards. Allow a 1/8 in. expansion gap between pieces if the siding is air-or-kiln-dried. Do not nail through overlaps. For siding up to 6 in. wide, use one nail one inch up from the lap. Face nail with two nails per bearing for 8 in. patterns and wider, keeping nails 2-1/2 to 3 in. apart to allow for dimensional movement without splitting.
For vertical applications, siding should be nailed to horizontal blocking lines or furring strips (see Wall Construction).
Table 9. Channel Siding Dimensions
|
Thickness (in.)
|
Nominal Width (in.)
|
Finished width (in.)
|
|
3/4
|
6, 8, 10
|
5-1/2, 7-3/8, 9-3/8
|
|
5/8
|
6, 8
|
5-1/2, 7-3/8
|
