Unless you want your AC unit or heater to spend more and more energy, causing your power bill to keep increasing until you can barely fit it into your budget, you’ll need to have insulation in your walls and attic. Doing so prevents the warm or cooled air from escaping out of your house, making it much easier to reach the temperature you’ve set in your thermostat.
The first thing you should know about getting home insulation is its R-value. Basically, this measures the resistance of your chosen insulation type to thermal resistance or heat conduction. The higher the R-value, the more efficient the insulation is. You should know though, that the Department of Energy measures this value differently based on where your home is located.
Two of the most common types of insulation are blown-in and fiberglass. Blown-in insulation contains loose-fill particles of fire-retardant insulating material. A compressor then blows these particles into your attic. This is an efficient way to get insulating material into the nooks and crannies of your attic, making for an even distribution, even if your attic has a particularly irregular shape.
Fiberglass insulation, on the other hand, comes in rolls or strips of varying lengths. This type of insulation is excellent for your floor joists, wall studs, and even your ceiling rafters. A paper backing, which can be stapled onto studs or beams, is attached to the insulating material.