Unless damaged, it can last 80 to 100 years in most houses before it needs to be replaced. However, insulation can start falling from fiberglass batts after 15 to 20 years, so if insulation was installed in batts well over a decade ago, it might be time for an inspection or a home energy audit.

Some people often assume that anything that is costly is always better. However, this is not always true. The industry is brimming with several types of solar panels that are quite costly but not primarily efficient. Hence, one should definitely choose an affordable alternative that is equally efficient in the long run.

Cellulose insulation is one of the most environmentally friendly home insulation materials. It is made up of 80 to 85% recycled newsprint, and the remaining 15% consists of borax, boric acid or ammonium sulfate, which helps make the newsprint fibers more fire-resistant and can help to repel insects.