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Insulation: When To Use Cellulose And When Fiberglass Will Do

Even most new homes have inadequate insulation, according to the U.S. Department of Energy. And, if you live in a home that was built more than 50 years ago, when energy costs were much lower, you likely need to reassess your insulation needs. However, deciding which product is best for your home and your needs can be challenging. Should you use cellulose or fiberglass?

Cellulose and fiberglass are both useful in insulating your home, but each has its own strengths and weaknesses.

    • Cellulose – Cellulose is a recycled product, made from ground-up newspapers. This type of insulation is loose fill and generally blown into existing walls or hard-to-reach spaces. Cellulose tends to settle as it ages and loses some of its effectiveness. Most cellulose is treated with a fire retardant, which can cause corrosion or rust if it gets near wires or lighting fixtures.
    • Fiberglass – Fiberglass is found in rolls with batting on one side and as loose fill. This product is useful in attics and hard-to-reach corners. Fiberglass helps to hold the heated or cooled air in the living area. Unlike cellulose, fiberglass doesn’t settle or break down, and it holds its full R-value over time. Fiberglass is also an easy DIY project for most homeowners.

If you need help choosing insulation for your Phoenix area home, let Wolff Mechanical help you decide which product is best for your family and your budget. We’ve been helping area homeowners with their heating, cooling and solar needs for more than 22 years.

Our goal is to help educate our customers in the Phoenix Valley area of Arizona about energy and home comfort issues (specific to HVAC systems). 

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