In January of 2010 the Illinois legislature passed a law requiring all new homes to meet or exceed the 2009 IECC energy standards. The law passed so quickly that most code enforcement officials did not even know what they needed to look for during inspections. A grace period of six months was granted to builders to figure out how to comply with these new highly restrictive standards. The old building code required builders to build homes to control moisture transfers as moisture always wants to travel from a warm surface to a cooler one. The new code also requires portions of the older codes but now also requires builders to increase exterior insulation values and prevent air transfers in or out of your house.
Gerstad Builders in the Liberty Tails of McHenry closed on its first home built by the new standards at the end of October. The energy efficient house originally was design to exceed the code by 2.3%. Upon final testing the home passed with flying colors. The new code requires a test to check how often the air changes in the house. Our […]
Energy code changes have been implemented in the state of Illinois that should have all buyers really looking at a new home instead of an existing non energy efficient older home.
The difference could be hundreds of dollars a year in heating and cooling bills. New codes call for a R-20 wall cavity about 25% higher than in the past. Ceiling R values have been increased to an R-38 about double what it was. Basements walls must be insulated to R-10 and all heat ducts in unconditioned areas (garages and attics) must be insulated to R-10. Windows also have to low-E glass.
Although many of these changes had previously been implemented at Gerstad builders, […]