Once the area is known divide by the area of a 4 8 sheet to find how much sheathing is needed.
Osb roof sheathing thickness canada.
Thicknesses range from 5 16 to 3 4 inch and the proper one to use.
Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.
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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.
Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.
For heavier loads a 40 20 rated panel 19 32 or 5 8 will support a 130 psf live load and 48 24 rated panels 23 32 or are good to175 psf.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet.
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Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.
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.
If you have multiple sections of roof find the area of each and add them together to find the total area.
The ontario building code thickness or rating 9 23 15 7.
Sheathing should be a minimum of 19 32 inch thick.
Loads will vary with the pitch of the roof.
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Find the area of a roof.
The typical thickness range for sheathing is 3 8 to 3 4 inch.
8d ring shank nails should be used instead.
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Never attach roof sheathing with staples.
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.
In canada osb panels are manufactured to meet the requirements of the csa o325 standard.
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.
