Required Thickness Of Roof Sheathing In N C

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Required thickness of roof sheathing in n c. Existing building code ncebc north carolina state building code. Sheathing should be a minimum of 19 32 inch thick. 8d ring shank nails should be used instead. 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 diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing.

The typical thickness range for sheathing is 3 8 to 3 4 inch. Mechanical code ncmc north carolina state building code. Roofing components roofing insulation and cover boards adhesives cements and primers specialty roofing products fasteners and plates coatings. Wood structural panel roof sheathing shall be bonded by exterior glue.

Hvac insulation duct board duct liner external duct insulation flexible duct insulation accessories the source insulation intel. State construction office sco north carolina state building code. N the highest uplift forces occur. Never attach roof sheathing with staples.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. N fastener spacing and size requirements for coastal construction are typically different than for non coastal areas. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. N sheathing loss is one of the most common structural failures in hurricanes.

Roofing design guidelines and policies low slope membrane roof 2016 page 7 b.