Haw. Code R. § tit. 3, Building Code Council, State Energy Conservation Code, subch. 2, 29

Current through November, 2024

Building envelope

IECC Section R503.1.1 is amended to read as follows:

R503.1.1 Building envelope.

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 a roof replacement shall meet one of the following:

1. R-30 cavity insulation or the cool roof requirements in Section C402.3 for residential buildings.

2. R-19 cavity insulation or the cool roof requirements in Section C402.3 for Tropical Zone residential buildings.

3. When uninsulated roof sheathing is exposed during alteration, at least two of the following must be installed:

a. Energy Star compliant roof covering;

b. Radiant barrier;

c. Attic ventilation via solar attic fans or ridge ventilation of gable ventilation; or

d. A minimum of one two exceptions listed in C402.3.

Footnote to exception: Shake roofs on battens must be replaced with materials that result in equal or improved energy efficiency.

Haw. Code R. tit. 3, Building Code Council, State Energy Conservation Code, subch. 2, 29

[Eff 12/15/2020]