Roof Sheathing For 24 On Center
For 1 2 inch panel maximum span shall be 24 inches.
Roof sheathing for 24 on center. That means it can be used at 24 in. The second number is the maximum span when the panel is used for floor sheathing. For rafters or 16 in. To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed.
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. It will support roof. 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 subfloors zip s 1 2 in.
Never attach roof sheathing with staples. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. 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 rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
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. 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 most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. The typical thickness range for sheathing is 3 8 to 3 4 inch.
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. 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.
8d ring shank nails should be used instead. Sheathing should be a minimum of 19 32 inch thick.