As a home insulation expert, I have witnessed firsthand the significant impact that old and ineffective insulation can have on a home's energy efficiency. Many homeowners are unaware that fiberglass insulation should be replaced every 15 to 20 years, as it can become dirty, wet, moldy, and ultimately ineffective. This process of removing old attic insulation can take anywhere from five to eight hours, depending on the size of the attic. There are several types of insulation commonly used in attics, including fiberglass blocks, loose filler cellulose, and aerosol foam.
However, it is essential to understand when it's time to replace your home's insulation. In this article, we will take a closer look at the different types of insulation, the factors that can weaken them, and the signs that indicate it's time for a replacement.
