The State Building Code Council has accepted the 2012 International Building Code with amendments for the State of Hawaii Building Code. The council is currently working on writing the Hawaii Administrative Rules which is required to place the 2012 IBC as amended into effect. The SEAOH Building Code Committee worked hard on making this happen and continues to meet monthly. On the next code cycle including considering amendments to the 2012 International Residential Code which is not applicable to regions with high design wind speeds such as Hawaii.
Some roofing manufacturers warranty asphalt shingles over unvented SIP roofs, while others void their warranty because of higher shingle temperatures. Research conducted by Building Science Corporation reveals that although asphalt shingle temperatures increase slightly (2 – 3 degrees F) in an unvented roof assembly, the color of the shingles and the roof orientation have a much more profound impact on the durability of shingles. According to the Builder’s Guide to Structural Insulated Panels (SIPs) published by Building Science Corporation, the typical reduction of shingle life over an unvented SIP roof assembly is between one and two years.