Insulation is critical to make your home energy efficient and comfortable. For the most efficient home, you need to select the correct insulation for the correct location. Thicker insulation has higher R-values, the ratings for how efficient insulation is, but if you compress insulation too much, it loses R-value.
Batt insulation is the large rolls of fiberglass that come either kraft faced, with paper attached to one side, or unfaced, with no paper attached. It is the most common type of insulation but it is particularly susceptible to being compressed too much.
Rigid insulation is a large sheets of foam that provides a lot of insulation in a small space. This insulation works very well in areas that will be difficult to attach batts of insulation or in addition to batts. It does tend to be more expensive per square foot.
Blown in insulation is similar to the batt type but without being in a fixed shape. Instead, it is blown into the space between the studs or in the attic. It takes up a lot of room but fills all of the little nooks and crannies which makes a more efficient home. It is more expensive than batt insulation but also more efficient.
When you select the correct insulation for the location and the efficiency you need, you will have a very comfortable and efficient home. There is always more than one way to insulation a location. Also, don’t forget the benefit of spray foam to seal around the gaps in your windows and siding.