Roof Sheathing Spacing

The thickness of plywood used for roof decking depends on the roof slope the spacing of.

Roof sheathing spacing.

Avoid standing between framing which can induce panel deflection. Use a 10d box nail to gauge 1 8 inch spacing between panels. Plywood is made with three or more layers of thin wood glued together with the grain. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding.

Roof sheathing basics the skeleton of a roof is formed with rafters or trusses generally spaced 16 inches or 24 inches apart from the center of one rafter to the center of the next. A 1 8 inch space between adjacent panel end and edge joints is recommended unless panel manufacturer indicates otherwise. Structural sheathing is typically cut slightly short of 48 inches by 96 inches to allow for this expansion gap look for a label that says sized for spacing this gap prevents buckling of panels due to moisture and thermal effects a common problem. Many factors affect thickness.

Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained. Properly fasten panels including fastening and spacing hints step 4. Check the nailing surface is level step 2. Spaced sheathing also called skipped decking refers to the construction details of the substrate which the cedar gets nailed to and thus secured to your home.

Method for maintaining a continuous load path at the roof ridge by nailing roof sheathing. Ventilate the roof according to current building codes step 3. For improved performance consider thicker roof sheathing panels panel edge clips or panels with tongue and groove edges. And scroll down to see more details on each with installation hints and tips below.

To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. The minimum plywood for roofing plywood is layers of wood.

Typically 1 4 or 1 6 boards of wood are installed with a 3 5 maximum space between each board directly over the roof rafters or in a cold roof system over the plywood deck. Before hurricane andrew devastated south florida in 1992 roof sheathing was generally attached using 6d nails spaced at 6 inches along the edges of the sheathing and at 12 inches along interior. For clarity sheathing nails are not shown.