Roof Sheathing 24 Truss Spacing

Boards require a minimum of two nails per truss while sheathing requires six nails due to face width and nail spacing.

Roof sheathing 24 truss spacing.

Spacing a live load deflection limited to l 240 maximum and use lumber properties as follows. 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. An excerpt of table r803 2 2 is shown in the next column. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

While ring shank nails are still required the nail size depends on the sheathing thickness. Typical roof truss spacing means that they are usually about 24 inches from centre which means at the centre of one truss there will be a two foot gap or twenty four inch gap until the centre of the next truss. 01 with 4 nominal bearing each end 24 o c. To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed.

Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g. Spaced sheathing or 1x. Table r803 2 2 specifies the minimum sheathing thickness for framing spaced 24 inches on center based on exposure category and wind speed. Each of these factors plays a role in determining how many nails you ll need to use per board during roof sheathing application.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. A structure s roof truss spacing can vary from every 12 to 24 inches.