Align the long edge of the sheathing with the ends of the.
Plywood roof sheathing gap.
Not always required but a good idea.
Position the first piece of plywood or oriented strand board sheathing on the bottom edge of the rafter tails at one end of the roof.
The shaft of the nail is slightly larger than 1 8 inch.
And scroll down to see more details on each with installation hints and tips below.
Use a 16d sinker nail for this purpose.
Plywood and oriented strand board osb like all wood products will expand or shrink slightly with changes in moisture content.
Cover sheathing with.
H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips.
Some older h clips do not provide a built in gap.
Ventilate the roof according to current building codes step 3.
Apa recommends a 1 8 inch space between panel edge and end joints.
Check the nailing surface is level step 2.
Virtually every one recommends that you your carpenter or builder create a 1 8 inch gap around all edges when installing plywood.
Properly fasten panels including fastening and spacing hints step 4.