I m contemplating upgrading to 1 2 or even 5 8 osb though to reduce roof sag hopefully to nil.
Osb roof sheathing thickness 16 oc.
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The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.
Using osb osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.
Edge support is typically provided by tongue and grove sheathing panels or panel clips.
The span rating on floor span panels appears as a single.
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.
Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.
Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.
7 16 cat ps2 10 osb sheathing application as 4 x 8.
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Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.
Currently we space rafters 16 oc and use 7 16 osb with h clips.
Find osb sheathing osb at lowe s today.
A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c.
Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.
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Or for floor sheathing over supports spaced up to 16 inches o c.
We re in dallas so we don t engineer for tremendous live loads for an asphalt shingle and we feel comfortable with 16 oc rafter spacing and 7 16 osb decking.
1 inch 25 4 mm.