Oc rafters plywood is really a thing of the past.
Required thickness of roof sheathing in n c.
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.
On the upcodes website.
Contains sections covering roof framing roof sheathing and roof ventilation.
There is no reason other than the roof receiving slate to use 3 4 cdx.
8d ring shank nails should be used instead.
Never attach roof sheathing with staples.
Plywood thickness for 24 quot.
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.
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.
Where the roof sheathing is less than 3 4 inch 19 mm thick the.
It does not modify the requirements of the building code.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
On the upcodes website.
Where flashing is of metal the metal shall be corrosion resistant withathicknessofnotlessthan0 019inch 0 483mm no.
North carolina state building code.
2018 international residential code.
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.
2006 north carolina building code 237.
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.
Roofing criteria state of north carolina pat mccrory governor department of administration kathryn johnston.
At exposed roof overhangs the sheathing must be rated for exposure to the weather.
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.
It s a waste of money and resources.
Energy conservation code ncecc 301 n.
Roof sheathing material must be coordinated with the roofing itself since each type of roofing has special requirements.
Roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings.
Sheathing should be a minimum of 19 32 inch thick.
Anyone who thumbs their nose at osb has never used advantec 1 2 osb.
