Roof Sheathing Thickness 16 Oc

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

Roof sheathing thickness 16 oc.

1 inch 25 4 mm. Sheathing should be a minimum of 19 32 inch thick. Currently we space rafters 16 oc and use 7 16 osb with h clips. For subfloors zip s 1 2 in.

Roof sheathing shall be structural wood panels plywood osb with a minimum five eighths inch thickness grade stamped for use and span. The typical thickness range for sheathing is 3 8 to 3 4 inch. I m contemplating upgrading to 1 2 or even 5 8 osb though to reduce roof sag hopefully to nil. That means it can be used at 24 in.

Never attach roof sheathing with staples. For rafters or 16 in. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 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.

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. 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. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. Huber s zip system sheathing which we are using on the fhb house has a span rating of 24 16 for 7 16 in. What about the roof sheathing at 24 in.