Insulating Your Attic Helps Reduce Summer Cooling Costs

Air Leaks Let Money Leak Too - Insulate Your Attic To Reduce Energy CostsInsulating your attic is the most effective way to improve the energy efficiency of your home. With adequate attic insulation, heating in the winter and cooling during the summer reduces the load on your heating/cooling system, possibly extending the life of your furnace/air conditioner. And better yet, you may see energy savings of 30% to 40% after installing attic insulation. (For a limited time, save 10% on attic insulation from Tollefson Bros. Exteriors, Bloomington MN.)

How Much Attic Insulation Do I Need?

Tollefson Bros. Exteriors is a qualitied insulation contractor serving Minneapolis MN and surrounding areasHeat flows naturally from warmer areas to cooler ones. It does this by one of three different methods: conduction, where heat is delivered directly from one mass to another; convection, the transfer of hot air from one space to another (hot air rises, cool air sinks); and radiation, which simply means that any warm mass passes off heat toward a cooler one.

The main function of insulation is to minimize the radiation and convection effect of heat and minimize conduction. Insulation levels are specified by R-Value. R-Value is a measure of insulation’s ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The U.S. Department of Energy’s recommended minimum R-value for Minnesota attics is R-49.

Do I Have Enough Attic Insulation?

The quickest, and most reliable way to determine if you have enough attic insulation is to have a qualified contractor inspect your attic. The contractor can assess the type and condition of the insulation in your attic and make recommendations about how to ensure you have an adequate R-value. (Tollefoson Bros. Exteriors will do a FREE attic inspection – give us a call today at 952-881-2218)

As important as adequate insulation is to managing energy costs, proper ventilation is just as important. Not only is insulation and ventilation critical in managing energy costs, but also in prolonging the life of your roof.

A Word About Attic Ventilation

Energy Star DIY Guide to Insulating Your AtticThe following is an excerpt from the Energy Star guide to sealing and insulating your attic. You can download a copy of this guide by following the link at the end of this article.

At first it may seem odd to add insulation for warmth and then purposely allow cold air to enter the attic through vents, but this combination is the key to a durable and energy-efficient home. Here’s why: in the winter, allowing a natural flow of outdoor air to ventilate the attic helps keep it cold, which reduces the potential for ice damming (snow that melts off a roof from an attic that is too warm and then re-freezes at the gutters, causing an ice dam that can damage the roof). Proper insulation and air sealing also keeps attics cold in winter by blocking the entry of heat and moist air from below. In the summer, natural air flow in a well-vented attic moves super-heated air out of the attic, protecting roof shingles and removing moisture. The insulation will resist heat transfer into the house. The most common mistake homeowners make when installing insulation is to block the flow of air at the eaves. NEVER COVER ATTIC SOFFIT VENTS WITH INSULATION—use rafter vents and soffit vents to maintain airflow.

Avoiding pitfalls such as this is another reason why you should choose to trust a local, qualified attic insulation and roofing specialist like Tollefson Bros. Exteriors in Bloomington MN instead of tackling the job yourself.

Contact Tollefson Bros. Exteriors online for a FREE estimate on all of your insulation and exterior remodeling needs: siding, roofing, windows, doors, gutters, insulation and more. Tollefson Bros Exteriors has served Minneapolis and surrounding communities for over 25 years. 952-881-2218.


To download your copy of the Energy Star DIY Guide to Insulating Your Attic, complete this form.

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