How Much Insulation Does a Home in Montana Need?
Montana sits entirely inside IECC climate zone 6B, with no county exceptions to track down.
How Much Insulation Does a Home in Missouri Need?
Missouri doesn’t have one insulation number. The state stretches across three IECC climate zones, and the county a home sits in decides which row of the…
How Much Insulation Does a Home in Mississippi Need?
Mississippi splits across two IECC climate zones, so the right insulation level depends on which side of the state you’re on.
How Much Insulation Does a Home in Minnesota Need?
Minnesota spans three IECC climate zones, so the right R-value depends on which county a home sits in, not on the state as a whole.
How Much Insulation Does a Home in Michigan Need?
Michigan doesn’t have one insulation number. The state sits across three separate IECC climate zones, so the right R-value for an attic, floor, or rim…
How Much Insulation Does a Home in Massachusetts Need?
Massachusetts sits entirely in one insulation zone, which simplifies things more than most states can claim.
How Much Insulation Does a Home in Maryland Need?
Maryland doesn’t have one insulation answer. It sits across two IECC climate zones, 4A and 5A, and the levels ENERGY STAR recommends shift depending on…
How Much Insulation Does a Home in Maine Need?
Maine homes need enough attic insulation to reach R60 if the attic is bare, or R49 if it already has 3 to 4 inches, plus R30 under the floor, except in…
How Much Insulation Does a Home in Louisiana Need?
Louisiana’s insulation numbers aren’t one-size-fits-all: the state’s 64 parishes fall into two different IECC climate zones, and the recommended attic…
How Much Insulation Does a Home in Kentucky Need?
Kentucky sits entirely in IECC climate zone 4A, which means the ENERGY STAR retrofit table calls for R60 in an uninsulated attic (or R49 if you already…