Irc 2015 Roof Sheathing Thickness

International residential code 2015 irc 2015.

Irc 2015 roof sheathing thickness. Los angeles building code 15 roof assemblies and rooftop structures 1507 requirements for roof coverings 1507 8 wood shingles 1507 8 1 deck requirements 1507 8 1 1 solid sheathing required a304 4 1 1 prescriptive provisions for seismic strengthening of cripple walls and sill plate anchorage of light wood frame residential buildings. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing. 0 5 mm thickness or mineral surfaced roll roofing weighing not less than 77 pounds per 100 square feet 4 kg m 2.

Cap nail shank and cap staple legs shall have a length sufficient to penetrate through the roof sheathing or not less than 3 4 inch into the roof. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. The typical thickness range for sheathing is 3 8 to 3 4 inch. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. 8d ring shank nails should be used instead. International residential code 2015 irc 2015. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.

51 mm nominal thickness and not less in depth than the cut end of the rafter. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Each manufacturer shall publish the allowable maximum loads and spans for service as floor and roof sheathing for their treatment.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Where the roof sheathing is less than 3 4 inch 19 1 mm thick the nails. Sheathing should be a minimum of 19 32 inch thick. Never attach roof sheathing with staples.