Roof Sheathing Thickness For 24 Oc

Tongue and groove sheathing rated 40 20.

Roof sheathing thickness for 24 oc.

For subfloors zip s 1 2 in. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Panels are rated 32 16.

Plywood thickness for 24 quot. Sheathing should be a minimum of 19 32 inch thick. 1 inch 25 4 mm. 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.

Never attach roof sheathing with staples. The typical thickness range for sheathing is 3 8 to 3 4 inch. That means it can be used at 24 in. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.

It can be used for rafters up to 40 in. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. For rafters or 16 in. Oc rafters i have worked with cdx generic osb and advantech.

What about the roof sheathing at 24 in. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Support spacing when the panel is used for subflooring. 8d ring shank nails should be used instead.

However if there is ever a roof leak i think the cdx holds up better. Two numbers separated by a slash e g 32 16 or 48 24. 2 thoughts on what thickness osb to use under shingles. It will support roof.

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. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c.