Attic Insulation Requirements Illinois

Contractor or insulation installer s fee.

Attic insulation requirements illinois.

For added energy control and sound deadening. When the old roof only had 1 3 of insulation it means that 5 of insulation might be added to meet the requirement. Type and material of your insulation. The illinois capital development board cdb must now review and adopt the code though an administrative proceeding.

Insulation requirements for crawl space walls are further specified in iecc section r402 2 10. Floor insulation must be installed to maintain contact with the underside of the subfloor decking. 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. The type of insulation you use will be determined by the nature of the spaces in the house that you plan to insulate.

Insulation level are specified by r value. In zone 3 the average minimum requirement for attic insulation is 9 inches of r30 fill. Add loose fill insulation to your attic or foil faced batt insulation to your cathedral ceiling. For example since you cannot conveniently pour insulation into an overhead space blankets spray or board products are used between the joists.

Inspecting your attic insulation. The higher the r value the better the thermal performance of the insulation. According to home advisor insulating your attic can cost between 1700 to 2100. In zone 4 the average minimum requirement for attic insulation is 11 inches of r38 fill.

The requirements of the new energy code will apply to all new residential and commercial buildings including alterations additions renovations and repairs. Insulation requirements for slab on grade floors are further specified in iecc section r402 2 9. Include insulation in the outer walls of the home. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.

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. Local jurisdictions would be prohibited from adopting energy codes. The main factors that impact the cost are.

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 the thicker it is the higher the r value. Square footage of your attic. 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.