Roof Sheathing 24 Truss Spacing

Table r803 2 2 specifies the minimum sheathing thickness for framing spaced 24 inches on center based on exposure category and wind speed.

Roof sheathing 24 truss spacing.

To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Each of these factors plays a role in determining how many nails you ll need to use per board during roof sheathing application. 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.

While ring shank nails are still required the nail size depends on the sheathing thickness. An excerpt of table r803 2 2 is shown in the next column. A structure s roof truss spacing can vary from every 12 to 24 inches. 01 with 4 nominal bearing each end 24 o c.

Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g. Spacing a live load deflection limited to l 240 maximum and use lumber properties as follows. 2x4f 2000psif 1100psie 1 8x10 2x6f 1750 psi f 950 psi f 1900 psi e 1 8x10. Spaced sheathing or 1x.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. It will support roof.