Roof Sheathing Thickness Ontario

1 inch 25 4 mm.

Roof sheathing thickness ontario.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Never attach roof sheathing with staples. Division b part 5 page 5 11 the national building code now dictates that all flat roof deck and balcony areas are considered roofs and when specifying a pvc. The ontario building code thickness rating and material standards 9 23 16 2.

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. Plywood s advantage over osb. 8d ring shank nails should be used instead. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

That in a nutshell is the one big advantage plywood holds over osb. Sheathing should be a minimum of 19 32 inch thick. Cgsb ca cgsb 37 54 polyvinyl chloride roofing and waterproofing membrane national building code of canada 2005. Most roofs will be sheathed in plywood at least 3 8 inch thick.

Ontario building code wall sheathing requirement. For sub floor s. Loads will vary with the pitch of the roof. The typical thickness range for sheathing is 3 8 to 3 4 inch.

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. 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.