Roof Sheathing For 24 On Center

Common roof sheathing materials include several types which are chosen depending on the budget and weather conditions of the area.

Roof sheathing for 24 on center.

Sheathing should be a minimum of 19 32 inch thick. The label on the far left is a common rating label for sheathing installed on roof trusses spaced 24 inches on center which is widely recognized as an economical construction method for residential roofs. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Never attach roof sheathing with staples.

For 1 2 inch panel maximum span shall be 24 inches. Panels are rated 32 16. For rafters or 16 in. The second number is the maximum span when the panel is used for floor sheathing.

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. The typical thickness range for sheathing is 3 8 to 3 4 inch. Span is permitted to be 24 inches on center where 3 4 inch wood strip flooring is installed at right angles to joist. What about the roof sheathing at 24 in.

Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. It will support roof. For subfloors zip s 1 2 in.

8d ring shank nails should be used instead. Installing fasteners at less than 3 inches on center can split framing members and signifi cantly reduce fastener withdrawal capacity unless 3 inch nominal framing is used and the nailing schedule is staggered. Span is permitted to be 24 inches on center for floors where 1 1 2 inches of cellular or lightweight concrete is applied over the panels. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

That means it can be used at 24 in. For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load.