Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.
Minimum roof sheathing for n c residential.
Wilmington street suite 450 raleigh nc 27601 1058.
Sheathing should be a minimum of 19 32 inch thick.
Roofs or ceilings need to be insulated to a minimum of r 38 in zone 3 or r 49 in zone 4.
Loads will vary with the.
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.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
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.
Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches.
That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.
Roofs shall be covered withmaterialsassetforthinsectionsr904andr905 classa b or c roofing shall be installed in areas designated by law as requiring their use or when the edge of the roof is less than 3 feet 914 mm from aproperty line classesa bandcroofing requiredtobelistedbythissectionshallbetestedinaccordance with ul 790 or astm e 108.
Rafters must be strong enough to hold the roof sheathing and the shingles.
Design calculations the designer is record is responsible for performing all.
Designer of record is responsible to ensure all roofing projects conform to the minimum requirement of the code.
Walls need to be insulated to a minimum of r 20 if the insulation is between the studs or r 15 r 5 if the insulation is a combination of insulation between the studs and a continuous layer of exterior insulation in zones 3 or 4.
Energy conservation code ncecc 301 n.
Roof sheathing installation 1 of 3 home builder s guide to coastal construction technical fact sheet no.
8d ring shank nails should be used instead.
N sheathing loss is one of the most common structural failures in hurricanes.
7 1 r oofing 7 12 10 roof sheathing installation key issues n insufficient fastening can lead to total building failure in a windstorm.
North carolina state building code.
Never attach roof sheathing with staples.
N fastener spacing.
