Required Thickness Of Roof Sheathing In N C

Contains sections covering roof framing roof sheathing and roof ventilation.

Required thickness of roof sheathing in n c. 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. 8d ring shank nails should be used instead. Alternative design pressures may be determined by using the north carolina building code asce 7 or the international building code. The typical thickness range for sheathing is 3 8 to 3 4 inch.

Oc rafters plywood is really a thing of the past. On the upcodes website. At exposed roof overhangs the sheathing must be rated for exposure to the weather. Roof sheathing material must be coordinated with the roofing itself since each type of roofing has special requirements.

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. North carolina state building code. Anyone who thumbs their nose at osb has never used advantec 1 2 osb. It is a great choice for your roof using clips.

As an example of what you can find in chapter 8 of the 2018 irc see. Where flashing is of metal the metal shall be corrosion resistant withathicknessofnotlessthan0 019inch 0 483mm no. Energy conservation code ncecc 301 n. 2018 international residential code.

It s a waste of money and resources. Roofing criteria state of north carolina pat mccrory governor department of administration kathryn johnston. 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. 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.

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. 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. There is no reason other than the roof receiving slate to use 3 4 cdx. It does not modify the requirements of the building code.

Sheathing should be a minimum of 19 32 inch thick. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Never attach roof sheathing with staples. 2006 north carolina building code 237.

Roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings.