Required Thickness Of Roof Sheathing In N C

Roofing criteria state of north carolina pat mccrory governor department of administration kathryn johnston.

Required thickness of roof sheathing in n c.

2006 north carolina building code 237. The typical thickness range for sheathing is 3 8 to 3 4 inch. North carolina state building code. Where the roof sheathing is less than 3 4 inch 19 mm thick the.

As an example of what you can find in chapter 8 of the 2018 irc see. On the upcodes website. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch 10 mm diameter head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing. Plywood thickness for 24 quot.

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. There is no reason other than the roof receiving slate to use 3 4 cdx. Anyone who thumbs their nose at osb has never used advantec 1 2 osb. It is a great choice for your roof using clips.

For doors in a structure with a roof slope of 10 degrees 2 12 or less from the horizontal the pressures from this table may be multiplied by 0 90. Alternative design pressures may be determined by using the north carolina building code asce 7 or the international building code. Oc rafters plywood is really a thing of the past. Roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. It s a waste of money and resources. On the upcodes website. Sheathing should be a minimum of 19 32 inch thick.

2018 international residential code. Never attach roof sheathing with staples. 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. At exposed roof overhangs the sheathing must be rated for exposure to the weather.

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. It does not modify the requirements of the building code. H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips.

Contains sections covering roof framing roof sheathing and roof ventilation.