Requirements for coastal construction are typically different than for non coastal areas.
Roof sheathing thickness requirements.
Where the sheathing thickness is greater than 15 32 inches roof sheathing is required to be fastened with astm f1667 rsrs 03 2 0 131 nails or astm f1667 rsrs 04 3 0 120 nails.
Spacer type panel edge clips are available from some manufacturers.
Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.
Use a 10d box 0 128 inch by 3 inch nail as a spacer to gauge 1 8 inch edge and end spacing between panels.
Roof sheathing panel spacing hints.
1 inch 25 4 mm.
Some departments do not have the man power to do roof sheathing inspection inspectors can not see everything and assume that the builder knows enough to do some things right.
Sheathing type typically 15 32 inch or thicker panels are required in high wind areas.
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 typical thickness range for sheathing is 3 8 to 3 4 inch.
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.
Allowable spans for lumber floor and roof sheathing a b for si.
30 felt lapped at least 3 inches horizontally and 6 inches at end laps.
Loads will vary with the.
Over spaced sheathing no underlayment is used except at the eaves if eaves flashing is required.
Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.
Never attach roof sheathing with staples.
Roof sheathing shall be structural wood panels plywood osb with a minimum five eighths inch thickness grade stamped for use and span.
The rsrs designation indicates the fastener is a ring shank roof sheathing nail.
N the highest uplift forces occur at roof corners edges and ridge lines.
7 construction exceeding the minimum requirements6 osb or plywood is the minimum you can use without edge support.
That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.