Insulation in Your Attic

Published On: Apr 04 2013 10:50:36 AM CDT

The insulation of your home, along with the sealing of air leaks and drafts, can help you save up to 20 percent on heating and cooling costs each year.


A poorly insulated attic can decrease your home's energy efficiency, leading to increased utility bills. It can also boost humidity, causing mold growth, rot and animal infestations.


Angie’s List, the nation’s leading provider of consumer reviews, asked highly rated insulation companies to weigh in.

·         Do I have enough? When you look at your attic, the insulation should appear voluminous and fluffy. The more the insulation settles over time, the more it loses its effectiveness. If the insulation looks flat and deflated, or it doesn't rise over your floor joists, you might need more. For the best assessment, consider having an energy audit in which infrared technology can detect gaps in insulation.

·         What type of insulation? Most homeowners use either loose insulation made from fiberglass or cellulose, spray foam insulation, or rolls, batts and blankets made from mineral fibers such as fiberglass and rock wool. One advantage of spray foam insulation is it can reach the nooks and crannies of your attic where other types of insulation might be difficult to apply.

·         What is R value? Attic insulation is classified into different R values, which measure thermal resistance. The higher the R value, the better the insulation.

·         Check it often: Since insulation can deteriorate, have it checked periodically to make sure it remains efficient.


Angie’s List Tips: Hiring an insulation company