Osb Roof Sheathing Thickness 24 Oc

4 osb design and application guide panel grades osb panels are available in three grades identified by a designation of the intended end use.

Osb roof sheathing thickness 24 oc.

1 inch 25 4 mm. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. 8d ring shank nails should be used instead. Oc rafters i have worked with cdx generic osb and advantech.

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. Sheathing sheathing span is intended for use as covering material for roofs subfloors and walls.

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. For pricing and availability. 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. Sheathing should be a minimum of 19 32 inch thick.

As far as installation goes i much prefer using osb or advantech over ply simply because it lays flat and doesn t warp curl like cdx. Plywood thickness for 24 quot. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

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