Roof Sheathing Thickness For 24 Oc

For subfloors zip s 1 2 in.

Roof sheathing thickness for 24 oc.

It will support roof. Tongue and groove sheathing rated 40 20. Plywood thickness for 24 quot. Two numbers separated by a slash e g 32 16 or 48 24.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Around here southern mn the cities you can drive through the neighborhoods with cheaper houses the ones with trusses on 24 centers and 1 2 or 7 16 sheeting and most many will have sagged roofs. That means it can be used at 24 in. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c.

However if there is ever a roof leak i think the cdx holds up better. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 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. Oc rafters i have worked with cdx generic osb and advantech.

2 thoughts on what thickness osb to use under shingles. 8d ring shank nails should be used instead. Sheathing should be a minimum of 19 32 inch thick. 1 inch 25 4 mm.

The first number is the maximum on center o c support spacing in inches for roof sheathing. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. 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. Panels are rated 32 16. The second number is the maximum o c. Support spacing when the panel is used for subflooring.

What about the roof sheathing at 24 in. For rafters or 16 in.