Roof Sheathing Thickness Osb

1 inch 25 4 mm.

Roof sheathing thickness osb.

Never attach roof sheathing with staples. Watch this now to learn how to avoid this same pr. Thicknesses range from 5 16 to 3 4 inch and the proper. Osb roof decking thickness 7 16 1 2 or 5 8 if were using osb we get 9 16 we dont worry about getting both 7 16 and 9 16 for walls then the roof we just get all of the same.

This way no worrying about grabbing scraps to fill in small spots and not having the correct thickness. Sheathing should be a minimum of 19 32 inch thick. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. 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.

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Page 6 of 7 v1 0 01 2008 osb roof design example calculations using asd 4x8 foot 24 16 teco sheathing span. 8d ring shank nails should be used instead.