N1109.1.1 exception 5

[Mr. Inspector]

N1109.1.1 (R503.1.1) Building envelope. Building envelope
assemblies that are part of the alteration shall comply
with Section N1102.1.2 or N1102.1.4, Sections N1102.2.1
through N1102.2.13, N1102.3.1, N1102.3.2, N1102.4.3
and N1102.4.5.
Exception: The following alterations shall not be
required to comply with the requirements for new construction
provided that the energy use of the building is
not increased:

5. Roofs without insulation in the cavity and where
the sheathing or insulation is exposed during
reroofing shall be insulated either above or below
the sheathing.

Can someone explain what this means. It looks like it means roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing is not required.

 

[steveray]

Can someone explain what this means. It looks like it means roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing is not required.

IF....that cavity is part of the envelope....yes...2021, but same

N1111.1.1 (R503.1.1) Building Envelope​

Building envelope assemblies that are part of the alteration