Osb Roof Sheathing Thickness Canada

Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.

Osb roof sheathing thickness canada.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c. Sheathing should be a minimum of 19 32 inch thick. For pricing and availability.

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. 8d ring shank nails should be used instead. The ontario building code thickness or rating 9 23 15 7.

Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Panel thickness will also affect permeability using the 2 perm variable of 7 16ths osb sheathing at 3 4 thickness the permeability drops to 2 3rds of a perm. The typical thickness range for sheathing is 3 8 to 3 4 inch. And remember that those are the higher of the estimated perm numbers and the best case scenario once a weather barrier is on.

Never attach roof sheathing with staples. Plywood s advantage over osb. In canada osb panels are manufactured to meet the requirements of the csa o325 standard. The wafers or strands used in the manufacture of osb are generally up to 150 mm 6 in long in the grain direction 25 mm 1 in wide and less than 1 mm 1 32 in thickness.

The span rating on floor span panels appears as a single. Thickness or rating 1 the thickness or rating of roof sheathing on a flat roof used as a walking deck shall conform to either table 9 23 14 5 a. Or for floor sheathing over supports spaced up to 16 inches o c. 2 the thickness or rating of roof sheathing on a roof not used as a walking deck shall conform to either table 9 23 15 7 a.