Roof Sheathing Thickness For 24 Oc

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.

Roof sheathing thickness for 24 oc.

Oc rafters i have worked with cdx generic osb and advantech. Two numbers separated by a slash e g 32 16 or 48 24. 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. Panels are rated 32 16.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. For subfloors zip s 1 2 in. 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.

What about the roof sheathing at 24 in. Plywood thickness for 24 quot. 2 thoughts on what thickness osb to use under shingles. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.

Never attach roof sheathing with staples. For rafters or 16 in. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c. Tongue and groove sheathing rated 40 20.

However if there is ever a roof leak i think the cdx holds up better. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. The first number is the maximum on center o c support spacing in inches for roof sheathing. The second number is the maximum o c.

It will support roof. 1 inch 25 4 mm. That means it can be used at 24 in. 8d ring shank nails should be used instead.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Support spacing when the panel is used for subflooring.