Required Thickness Of Roof Sheathing In N C

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Required thickness of roof sheathing in n c.

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. 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. Where the roof sheathing is less than 3 4 inch 19 mm thick the. Never attach roof sheathing with staples.

2006 north carolina building code 237. There is no reason other than the roof receiving slate to use 3 4 cdx. Plywood thickness for 24 quot. North carolina state building code.

The typical thickness range for sheathing is 3 8 to 3 4 inch. Energy conservation code ncecc 301 n. 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.

Anyone who thumbs their nose at osb has never used advantec 1 2 osb. 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. Roof sheathing material must be coordinated with the roofing itself since each type of roofing has special requirements. Roofing criteria state of north carolina pat mccrory governor department of administration kathryn johnston.

Alternative design pressures may be determined by using the north carolina building code asce 7 or the international building code. Contains sections covering roof framing roof sheathing and roof ventilation. 2018 international residential code. On the upcodes website.

As an example of what you can find in chapter 8 of the 2018 irc see. It s a waste of money and resources. Sheathing should be a minimum of 19 32 inch thick. Oc rafters plywood is really a thing of the past.

It is a great choice for your roof using clips. Where flashing is of metal the metal shall be corrosion resistant withathicknessofnotlessthan0 019inch 0 483mm no. 8d ring shank nails should be used instead. Roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings.

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.