Tempo:
Roof Sheathing and Coverings
ROOF SHEATHING
Installing Roof Sheathing
Sheathing-grade plywood or OSB or lumber planks are applied over roof trusses, joists or rafters to provide a nailing base for the roof covering and lateral bracing of the roof framing.
When plywood or OSB is used for roof sheathing, sheets are laid with the face grain at right angles to the framing (Figure 97) and with the joints offset to obtain a good
97 Application of structural wood-panel roof sheathing rafter ceiling joist
nails 300 mm (12 in.) o.c. minimum metal H-clip, blocking or tongue-and-groove plywood 2-3 mm (1⁄8 in.) space
nails 150 mm (6 in.) o.c. minimum grain direction double top plate
ROOF SHEATHING
Installing Roof Sheathing
Sheathing-grade plywood or OSB or lumber planks are applied over roof trusses, joists or rafters to provide a nailing base for the roof covering and lateral bracing of the roof framing.
When plywood or OSB is used for roof sheathing, sheets are laid with the face grain at right angles to the framing (Figure 97) and with the joints offset to obtain a good
97 Application of structural wood-panel roof sheathing rafter ceiling joist
nails 300 mm (12 in.) o.c. minimum metal H-clip, blocking or tongue-and-groove plywood 2-3 mm (1⁄8 in.) space
nails 150 mm (6 in.) o.c. minimum grain direction double top plate
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