G Insulation/Building Perimeter

Section 250.TABLE G   Insulation/Building Perimeter 1)         Zones for insulation/building perimeter requirements shall consist of the counties listed here. Zone 1 includes the following counties: Boone Ford Kane Lee Ogle Tazewell Bureau Grundy Kankakee Livingston Peoria Warren Carroll Henderson Kendall Marshall Putnam Whiteside Cook Henry Knox McHenry Rock Island Will DeKalb Iroquois Lake McLean Stark Winnebago DuPage JoDaviess LaSalle Mercer Stephenson Woodford Zone 2 includes the following counties: Adams Clark Effingham Jersey McDonough Pike Bond Coles Fayette Logan Menard Sangamon Brown Crawford Fulton Macon Montgomery Schuyler Calhoun Cumberland Greene Macoupin Morgan Scott Cass DeWitt Hancock Madison Moultrie Shelby Champaign Douglas Jasper Mason Piatt Vermilion Christian Edgar Zone 3 includes the following counties: Alexander Gallatin Johnson Perry St. Clair Washington Clay Hamilton Lawrence Pope Saline Wayne Clinton Hardin Marion Pulaski Union White Edwards Jackson Massac Randolph Wabash Williamson Franklin Jefferson Monroe Richland 2)         The following minimum building perimeter insulation R values shall be provided: Roof Walls Floors Zone 1 R-20 R-17 R-19 Zone 2 R-18 R-17 R-19 Zone 3 R-15 R-12 R-11 3)         All windows shall be glazed with double glazed insulating glass.  All exterior windows and door frames shall be constructed of non-cold conducting materials such as wood or metal with a thermal break.