Plywood Roof Sheathing Overhang

This indicates the truss tails.

Plywood roof sheathing overhang.

A is smooth and knot free while d the lowest quality has missing knots and cracks. Choose an exterior c d grade. The everyday sheathing used on the body of a roof is not rated for weather exposure so when exposed eaves and or rakes occur at the perimeter a different more expensive weather rated grade of plywood or osb must be used. It is an excellent choice for light frame wall and roof assemblies in weather protected applications.

Every piece meets the highest grading standards for strength and appearance. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. As a quick primer in plywood each side is rated from a to d.

Then we re going to use a scrap of 2x4 to space off the square and strike a line there. Draw a full scale mockup and snap a line with fascia in kind to figure out for the sheathing snap line swing the square over to the pitch of the roof in this case it is a. It adds proven performance and durability to new homes room additions and renovations. Things needed tape measure chalk line circular saw 4 foot by 8 foot sheets of 3 4 inch plywood or osb framing nailer.

At exposed roof overhangs the sheathing must be rated for exposure to the weather. Roof sheathing or decking is one of those elements. Plywood sheathing delivers outstanding stiffness strength and versatility. The common grade of plywood for roof sheathing is cdx.

Thickness will range from 3 8 to 3 4 inch depending upon local code.