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.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Roofing design guidelines and policies low slope membrane roof 2016 page 7 b. Hvac insulation duct board duct liner external duct insulation flexible duct insulation accessories the source insulation intel. N fastener spacing and size requirements for coastal construction are typically different than for non coastal areas.

N the highest uplift forces occur. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Building code ncsbc north carolina state building code. Never attach roof sheathing with staples.

Sheathing should be a minimum of 19 32 inch thick. N sheathing loss is one of the most common structural failures in hurricanes. Roofing components roofing insulation and cover boards adhesives cements and primers specialty roofing products fasteners and plates coatings. 8d ring shank nails should be used instead.

Wood structural panel roof sheathing shall be bonded by exterior glue. 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. Roof sheathing conforming to the provisions of table 2304 7 1 2304 7 2 2304 7 3 or 2304 7 5 shall be deemed to meet the requirements of this section. The typical thickness range for sheathing is 3 8 to 3 4 inch.

State construction office sco north carolina state building code.