Roof Sheathing For 24 On Center

For 1 2 inch panel maximum span shall be 24 inches.

Roof sheathing for 24 on center.

Span is permitted to be 24 inches on center where 3 4 inch wood strip flooring is installed at right angles to joist. Ridge vents when the roof sheathing is used as a structural diaphragm as it typically is in high wind and seismic hazard areas the. For subfloors zip s 1 2 in. 8d ring shank nails should be used instead.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. It will support roof. 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. The typical thickness range for sheathing is 3 8 to 3 4 inch.

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. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. For rafters or 16 in. What about the roof sheathing at 24 in.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The second number is the maximum span when the panel is used for floor sheathing. Panels are rated 32 16. That means it can be used at 24 in.

Common roof sheathing materials include several types which are chosen depending on the budget and weather conditions of the area. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. 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. Never attach roof sheathing with staples.