Plywood Roof Sheathing Gap

Some older h clips do not provide a built in gap. Ventilate the roof according to current building codes step 3. 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.

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And scroll down to see more details on each with installation hints and tips below.

Plywood roof sheathing gap.

This gap will minimize or totally eliminate any puckering caused by swelling. Apa recommends a 1 8 inch space between panel edge and end joints. Check the nailing surface is level step 2. Plywood and oriented strand board osb like all wood products will expand or shrink slightly with changes in moisture content.

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. That can mean costly time consuming callbacks. 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. The shaft of the nail is slightly larger than 1 8 inch. Not always required but a good idea. Use a 16d sinker nail for this purpose.

Cover sheathing with. Virtually every one recommends that you your carpenter or builder create a 1 8 inch gap around all edges when installing plywood.

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