Definitely one of the most important considerations in keeping your energy costs low is having the right level of attic insulation in your home. In winter, attic insulation protects against the cold and also keeps the cool in during the hot summer months. What are the considerations in making your attic a well-insulated spot? Checkout insulate a home for more info.
Examine the type of insulation you have on the attic first. Many older houses have what is termed battle isolation. This is the kind that comes in large rolls, and is typically pink or yellow in colour. The insulation is generally spread out in the attic between the wooden beams. The other type of insulation is called isolation with blow-in. Professional contractors typically install Blow-in insulation, as they have the right equipment to do the work. Small bits of insulation are blown mechanically into the attic by wind, creating the blanket across the attic floor. This kind of insulation will generally be found in new houses.
With either batt isolation or blow-in insulation, of course, there are good and bad. Batt insulation, provides an equal R-Factor through the attic when properly installed. The R-factor is the measurement of the insulation’s overall performance, and is also called the thermal output. It measures heat flux resistance. The properly installed batt attic insulation will give you a uniform R-Factor through the entire attic.
Alternatively, a machine is used to propel the blow-in insulation into the attic. While blowing it in uniform through the entire attic is very difficult, the result is a variable R-factor in that space. The insulation will do the trick as long as the installation is done thoroughly and the required minimum number of inches sits on the flooring of the attic. That makes a non-uniform R-factor issue an overall non-factor.
Another factor to consider is, of course, the money involved in battle and blow-in insulation. Usually it costs less to buy battle insulation, but also your time is something to consider. It takes a lot of time to add insulation correctly, or replace the existing insulation.
Of course you have to have the right equipment when adding attic insulation, including proper clothes, lots of time, and plenty of patience. Alternatively, for a little more money, you can always contract the job out and have a blow-in isolation job completed in just a few hours without the same trouble.