Required Thickness Of Roof Sheathing In N C
Wood structural panel roof sheathing shall be bonded by exterior glue.
Required thickness of roof sheathing in n c. Mechanical code ncmc north carolina state building code. Sheathing should be a minimum of 19 32 inch thick. N sheathing loss is one of the most common structural failures in hurricanes. State construction office sco north carolina state building code.
Building code ncsbc north carolina state building code. Roofing design guidelines and policies low slope membrane roof 2016 page 7 b. Roof sheathing installation key issues n insufficient fastening can lead to total building failure in a windstorm. 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 the highest uplift forces occur. Existing building code ncebc north carolina state building code. 8d ring shank nails should be used instead.
Hvac insulation duct board duct liner external duct insulation flexible duct insulation accessories the source insulation intel. 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. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.