Plywood Roof Sheathing Overhang

Things needed tape measure chalk line circular saw 4 foot by 8 foot sheets of 3 4 inch plywood or osb framing nailer.

Plywood roof sheathing overhang.

Thickness will range from 3 8 to 3 4 inch depending upon local code. As a quick primer in plywood each side is rated from a to d. Roof sheathing or decking is one of those elements. At exposed roof overhangs the sheathing must be rated for exposure to the weather.

A is smooth and knot free while d the lowest quality has missing knots and cracks. It also holds roofing nails well. 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. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

Then we re going to use a scrap of 2x4 to space off the square and strike a line there. The common grade of plywood for roof sheathing is cdx. It adds proven performance and durability to new homes room additions and renovations. This indicates the truss tails.

Every piece meets the highest grading standards for strength and appearance. Choose an exterior c d grade. It is an excellent choice for light frame wall and roof assemblies in weather protected applications. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

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.