Attic Insulation Requirements Illinois

Include insulation in the outer walls of the home.

Attic insulation requirements illinois.

5 illinois energy conservation code 2018 amendment proposals it takes from 6 8 of insulation to meet the minimum r 30 continuous insulation required by the 2018 iecc. Access doors from conditioned spaces to unconditioned spaces e g attics and crawl spaces shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces. Contractor or insulation installer s fee. In zone 3 the average minimum requirement for attic insulation is 9 inches of r30 fill.

The requirements of the new energy code will apply to all new residential and commercial buildings including alterations additions renovations and repairs. The higher the r value the better the thermal performance of the insulation. The main factors that impact the cost are. R value is a measure of insulation s ability to resist heat traveling through it.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. The illinois capital development board cdb must now review and adopt the code though an administrative proceeding. For added energy control and sound deadening. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.

Insulation requirements for crawl space walls are further specified in iecc section r402 2 10. For example since you cannot conveniently pour insulation into an overhead space blankets spray or board products are used between the joists. Local jurisdictions would be prohibited from adopting energy codes. Type and material of your insulation.

Floor insulation must be installed to maintain contact with the underside of the subfloor decking. Insulation the thicker it is the higher the r value. In zone 4 the average minimum requirement for attic insulation is 11 inches of r38 fill. Insulation level are specified by r value.

Square footage of your attic. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. When the old roof only had 1 3 of insulation it means that 5 of insulation might be added to meet the requirement. Add loose fill insulation to your attic or foil faced batt insulation to your cathedral ceiling.

The type of insulation you use will be determined by the nature of the spaces in the house that you plan to insulate. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Inspecting your attic insulation. The average recommended level is 17 inches of r60.