Roof Sheathing Spacing

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather.

Roof sheathing spacing.

Properly fasten panels including fastening and spacing hints step 4. Many factors affect thickness. 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. 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.

Ventilate the roof according to current building codes step 3. 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. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding. The minimum plywood for roofing plywood is layers of wood.

To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. Use a 10d box nail to gauge 1 8 inch spacing between panels. Method for maintaining a continuous load path at the roof ridge by nailing roof sheathing. For improved performance consider thicker roof sheathing panels panel edge clips or panels with tongue and groove edges.

Cover sheathing with. Plywood is made with three or more layers of thin wood glued together with the grain. Spacer type panel edge clips may also be used for roof sheathing applications. The thickness of plywood used for roof decking depends on the roof slope the spacing of.

A 1 8 inch space between adjacent panel end and edge joints is recommended unless panel manufacturer indicates otherwise. Check the nailing surface is level step 2. Avoid standing between framing which can induce panel deflection. Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained.

Tighter nail spacing is recommended 4 inches on center maximum. 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. 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.