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How Does Fiberglass Insulation Work?

If you need to install more insulation in your home or building, you’re probably doing your research. And you’ve probably been looking up information on fiberglass, one of the most widely installed insulation materials. It’s been used to insulate structures for many decades.

How does insulation work to prevent heat loss?

How Fiberglass Insulation Works

Fiberglass is a composite material made of a plastic matrix reinforced by tiny glass fibers. It is lightweight yet strong, and since glass isn’t a good conductor of heat, it’s a very effective insulation material. Thermal insulation, like fiberglass, stops conductive heat transfer—which is the transfer of heat through solid objects (such as the walls of your home). Most insulation materials prevent heat loss through conduction—reflective materials like radiant barriers work a bit differently.

Fiberglass insulation traps heat when it’s moving to a colder area—from outside to inside your home in the summer and from inside the house to outside in the winter. It is available in loose-fill/blown-in and batt/blanket form and can be installed anywhere in your home, including your:

  • Walls
  • Crawl spaces
  • Attics

Fiberglass insulation can not only help you save on your energy bills, but it can also help make your home more comfortable all year long and improve the energy efficiency of your furnace and air conditioner.

Fiberglass Insulation from OJ Insulation

OJ Insulation uses fiberglass insulation products from top manufacturers in the industry, including CertainTeed and Knauf. We have experience insulating both homes and buildings. If you need to insulate your home in the San Diego or Los Angeles area, we can help. Contact the OJ Insulation team today to learn more about our fiberglass insulation installation services!

Where should you insulate in your home? Check out our interactive infographic:

Home Insulation

We insulate attics, walls and crawl spaces.

Commercial Insulation

We insulate warehouses, offices, studio spaces & more.

Insulation Removal

Do you need to remove old insulation? We can help.

Fireplaces & Mantels

We work with builders to install fireplaces and mantels.

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