Hawaii Administrative Rules
Title 3 - DEPARTMENT OF ACCOUNTING AND GENERAL SERVICES
Building Code Council
State Energy Conservation Code
Subchapter 2 - AMENDMENTS TO THE 2018 ICC INTERNATIONAL ENERGY CONSERVATION CODE
29 - Building envelope

Universal Citation: HI Admin Rules 29

Current through August, 2024

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.

Disclaimer: These regulations may not be the most recent version. Hawaii may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.