After research i believe that you have to get to table r503 2 1 1 which show that.
2015 irc roof sheathing code.
As long as either fire rated roof sheathing or 5 8 type x drywall below the roof sheathing is provided for a width of 48 on either sides of the firewall.
Section 9 of this book.
Group r 4 includes residential care and assisted living facilities for 6 to 16.
Cap nail shank and cap staple legs shall have a length sufficient to penetrate through the roof sheathing or not less than 3 4 inch into the roof sheathing.
This is only a general list and is not intended to address all possible.
Please verify the following before calling for a roof sheathing or shear wall inspection.
In accordance with 2015 irc section r908 3 all existing layers of roof coverings must be removed down to the sheathing before reroofing.
Are allowed to be constructed in accordance with the irc.
Class a b or c roofing shall be installed in jurisdictions designated by law as requiring their use or where the edge of the roof is less than 3 feet 914 mm from a lot line.
R902 1 roofing covering materials.
Roof openings or penetrations such as plumbing or ridge vents are not permitted within 48.
Residential re roof july 2016 this inspection checklist reflects code requirements of the 2015 international residential code irc.
2015 code conforming wood design 1 american wood council international code council.
This checklist is intended for use to prepare for an inspection.
Unvented attics and unvented enclosed roof framing assemblies created by ceilings that are applied directly to the underside of the roof framing members and structural roof sheathing applied directly to the top of the roof framing members rafters shall be permitted where.
There has been a lot of mis quoting of the wrong section of the code.
Staples shall be not less than 21 gage.
In areas where the average daily temperature in january is 25 f 4 c or less solid sheathing is required on that portion of the roof requiring.
Please verify the following before calling for the re roof inspection.
The only exception is when there is only a single layer of existing roof covering and the roof covering and sheathing below is an adequate base that is neither deteriorated and not water soaked.
There has been substantial debate over the minimum acceptable thickness of plywood when used as roof sheathing.
Roofs shall be covered with materials as set forth in sections r904 and r905.
Ber structural glued laminated timber wood structural sheathing i joists and trusses.
Slate and slate type shingles.
R806 5 unvented attic and unvented enclosed rafter assemblies.
R905 8 1 1 roof assemblies solid sheathing required.