Plywood Roof Sheathing Spacing

If the wood structural panels are tightly butted there is no room for expansion and buckling can occur.

Plywood roof sheathing spacing.

This is a popular option because it presents homeowners with functional but affordable roof sheathing. Check building code requirements for installation of panel edge clips. Or for floor sheathing over supports spaced up to 16 inches o c. Check the nailing surface is level step 2.

If your roof carries a heavier load like if there s less pitch and or it snows in your area a roofer may recommend the use of the inch variety. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c. Cover sheathing with. The solution 1 8 spacing plywood manufacturers are aware of these problems.

A half inch cdx plywood is often used with rafter with 24 inch spacing. The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing. Panel selection handling and storage table 2. Plywood and oriented strand board osb like all wood products will expand or shrink slightly with changes in moisture content.

For improved performance consider thicker roof sheathing panels panel edge clips or panels with tongue and groove edges. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. Ventilate the roof according to current building codes step 3. Apa recommends a 1 8 inch space between panel edge and end joints.

And scroll down to see more details on each with installation hints and tips below. Support spacing when the panel is used for subflooring. The minimum plywood for roofing plywood is layers of wood. Plywood is made with three or more layers of thin wood glued together with the grain.

Plywood clips also referred to as h clips or panel edge clips are small metal brackets placed between the unsupported edges of plywood sheathing to effectively reduce the support spacing and stiffen the plywood. A structure s roof truss spacing can vary from every 12 to 24 inches. A 1 8 inch space between adjacent panel end and edge joints is recommended unless panel manufacturer indicates otherwise. That can mean costly time consuming callbacks.

The thickness of plywood used for roof decking depends on the roof slope the spacing of. The second number is the maximum o c. Properly fasten panels including fastening and spacing hints step 4. Many factors affect thickness.