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How Does Fiberglass Insulation Work?

Insulation installer using spray foam to fill in the floor of an attic

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 this 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’s 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 like your home’s walls. Most insulation materials prevent heat loss through conduction, but 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’s available in loose-fill/blown-in and batt/blanket form and can be installed anywhere in your home, including your:

Fiberglass insulation can help you save on your energy bills. It makes your home more comfortable all year and improves the energy efficiency of your furnace and air conditioner.

Free Estimate

Choose Fiberglass Insulation Contractors 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. Call us or reach out online today.

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

SERVICES WE PROVIDE
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Home Insulation

We insulate attics, walls and crawl spaces.

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Commercial Insulation

We insulate warehouses, offices, studio spaces & more.

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Insulation Removal

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

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Fireplaces

We work with builders to install fireplaces.

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