Roof Sheathing Thickness 24 Oc

Roof sheathing shall be structural wood panels plywood osb with a minimum five eighths inch thickness grade stamped for use and span.

Roof sheathing thickness 24 oc.

Sheathing should be a minimum of 19 32 inch thick. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. The typical thickness range for sheathing is 3 8 to 3 4 inch. Secure roof sheathing panels to the roof framing with 8d common nails spaced six inches on center at the edges and twelve inches on center at intermediate supports.

The exception according to the 2015 irc is 2 6 walls supporting two full floors plus a roof assembly above or 2 4 walls supporting one floor plus a roof assembly above zip sheathing can typically be. 1 inch 25 4 mm 1 pound per square foot 0 0479 kn m 2. Floor and roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Never attach roof sheathing with staples.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Applies to panels 24 inches or wider. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. 8d ring shank nails should be used instead.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.