Plywood Roof Sheathing Gap

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Plywood roof sheathing gap.

Properly fasten panels including fastening and spacing hints step 4. If the wood structural panels are tightly butted there is no room for expansion and buckling can occur. Align the long edge of the sheathing with the ends of the. 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.

Apa recommends a 1 8 inch space between panel edge and end joints. The shaft of the nail is slightly larger than 1 8 inch. Check the nailing surface is level step 2. Ventilate the roof according to current building codes step 3.

Not always required but a good idea. This gap will minimize or totally eliminate any puckering caused by swelling. That can mean costly time consuming callbacks. Virtually every one recommends that you your carpenter or builder create a 1 8 inch gap around all edges when installing plywood.

Use a 16d sinker nail for this purpose. 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.