Roof Plywood Thickness Ontario

Minimum thickness mm 1 with supports 406 mm o c.

Roof plywood thickness ontario.

Sheathing should be a minimum of 19 32 inch thick. 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. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. The ontario building code thickness or rating 9 23 15 7.

All of my experience is in southern ontario so the info that follows is based upon that. Loads will vary with the pitch of the roof. Rafters you are fine going with 1 2 plywood or 7 16 inch on the 30 pitch approx 7 12 slope. Allow them become larger troubles as well as roofing substitute simply months from currently implies you invest 4 also 5 numbers.

It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal. You might be tempted to choose a inch thickness although it s unnecessary in most cases. 10 pitch is just over a 2 12 slope which is very shallow. Mineral fibre rigid board type 2.

The standard width is 4 feet. Never attach roof sheathing with staples. Small best plywood for rv roof repair services done today can cost you state 400. Astm c1177 c1177m.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Keep in mind that the load of the roof still plays a role in the plywood thickness. A flatter roof with rafters farther apart may need a thickness of up to inch. We have drastically varying snow loads in ontario depending on where you are.

When this is the case experts recommend a 5 8 inch thick sheet. Most roofs will be sheathed in plywood at least 3 8 inch thick. Astm c1396 c1396m. The major factor to best plywood for rv roof repair is so you with any luck do not need to pay of changing a roof covering.

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. 8d ring shank nails should be used instead. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood.