The table below shows what levels of insulation are cost effective for different climates and.
Minimum attic insulation r value.
The average recommended level is 14 inches of r49.
Insulation level are specified by r value.
You will need a higher r value of insulation if you live in the northeast than if you live in southern california.
Recommended home insulation r values.
How much insulation in attic for zones 1 4.
The higher the r value the better the thermal performance of the insulation.
Where you live different climates require different insulation r values.
There are many ways to retrofit a home with fiberglass and.
R value is a measure of insulation s ability to resist heat traveling through it.
The insulation levels of an attic or of any part of a house are understood through the r value that is the value with which the insulating material is resistant to heat flow.
In zone 2 the average minimum requirement for attic insulation is 9 inches of r30 fill.
The average recommended level is 17 inches of r60.
In general to optimally isolate an attic on average an r value of the insulation is required ranging from r 50 to r 60.
Your home s age if your home is more than 10 year old you likely need more insulation.
In zone 1 the average minimum requirement for attic insulation is 9 inches of r30 fill.