Insulation 101 / 08.30.17 Comparing your options for home insulation: fiberglass vs. cellulose

If it’s your first time re-insulating your home, it can be a bit intimidating. There are several types of home insulation products to choose from, but what’s the best option?

Two of the most common insulation materials are fiberglass and cellulose. Many homeowners choose these options because they are cheaper than spray foam insulation and relatively easy to install. Let’s take a look at the key differences between fiberglass and cellulose insulations.

Fiberglass

Cellulose

What is it made of?

Fiberglass is made from flexible, individual glass fibers.

Cellulose is made from recycled paper fibers.

DIY basic installation process

Cut fiberglass batts and fit them to the cavity you are trying to fill.

Use a blower and hose to blow cellulose into the cavity you are trying to fill.

Equipment needed

  • Safety goggles

  • Ruler or measuring device

  • Gloves

  • Utility knife

  • Hammer tacker

  • Polyethylene vapor barrier

  • Safety goggles

  • Ruler or measuring device

  • Gloves

  • Dust mask

  • Blowing machine and hose

  • Extension cord

  • Metal barrier

  • Soffit baffles

Key features

  • Blocks sound

  • Made with up to 30 percent recycled material

  • Does not corrode steel, copper or other metals

  • Blocks sound

  • Made with up to 85 percent recycled material

  • Fire resistant

  • Conforms to space without disrupting structures and finishes

  • Restricts airflow

  • Does not corrode steel, copper or other metals

Cost

~$20 for 40 sq. ft.

~$11.25 for 40 sq. ft.

Where can I buy it?

Home Depot, Lowe’s

Home Depot, Lowe’s

As you’re looking to insulate your home, consider the full installation process for both fiberglass and cellulose insulation. It’s important to know what to expect in order to get the job done. From there, you can use the information above to help you decide on the option that’s best for your home.