Do You Need Attic Insulation. The higher the r value the better the thermal performance of the insulation. This is more expensive and usually requires a contractor but it may be worth the cost especially if you live in a very cold climate. The table below shows what levels of insulation are cost effective for different climates and locations in the home.
If you are planning to have an attic insulation project for your home you may be wondering whether it is important to have a vapor barrier installed as well. Although you can get better performance from any insulation simply by installing a greater thickness of it the department of energy recommends you have more than an r 30 rating on your attic insulation.
Do i have enough.
Loose fill or batt the common term for blanket insulation. You need up to 19 inches or r 49 for efficiency. Both can be added to uninsulated attics or layered over existing material. Loose fill or batt the common term for blanket insulation.
