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What Is Fiberglass Insulation Made Of?

Insulation contractor installing fiberglass batt insulation in an unfinished wall.

If you want to make your home or business more energy-efficient, you’re wise to consider insulating, but which type should you choose? Fiberglass is one of the most popular insulation materials used today for everything from attic insulation to wall insulation.

Still, you might be wondering, what is fiberglass insulation made of? How does it work? And is it safe? Keep reading to find out.

What Is Fiberglass Insulation?

As the name suggests, fiberglass is made of glass fibers. This includes several basic raw materials, the primary of which are silica sand, limestone and soda ash. Other ingredients used in fiberglass insulation production include borax, calcinated alumina, feldspar, kaolin clay, magnesite and nepheline syenite.

Discontinuous glass fibers are used to create batts, blankets or blown-in insulation to resist heat flow and absorb sound. Fiberglass is also available in long, continuous fibers used to make everything from drapes and shower curtains to window frames and roof shingles.

Call (208)488-4962 today to learn more about our fiberglass insulation or schedule home insulation services.

How Does Fiberglass Insulation Work?

The process of manufacturing fiberglass insulation gives it the ability to resist heat flow. First, a mixture is prepared with the proper amount of raw ingredients and melted at a temperature of 2,500 degrees Fahrenheit.

The molten glass flows from the furnace into a cylindrical container with small holes. As the container spins, glass flows out of the holes. A blast of air separates the filaments into short strands, which fall onto a conveyor belt and interlace into a fleecy batt of fiberglass insulation.

The fiberglass fibers trap pockets of air, slowing the movement of heat through them. When installed in a building, fiberglass helps keep conditioned air inside and can decrease heating and cooling costs as a result.

Is Fiberglass Insulation Safe for Homes?

Fiberglass is an excellent choice from a fire safety perspective because fiberglass is fire-resistant without any additives.

However, it’s important not to handle fiberglass with your bare hands because the tiny glass particles can irritate your skin and sometimes cause a rash. Inhalation can also result in coughing and other respiratory ailments.

When installing fiberglass, you should leave the installation to an experienced professional. Once in place, fiberglass poses no health risks or safety hazards.

Schedule Fiberglass Insulation Installation for Your Idaho Building

At Big City Insulation of Idaho, we install residential and commercial insulation in new construction and retrofit projects.

Call 208-488-4962 or contact us online to schedule residential insulation services today.

Services We Provide
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Residential Insulation

Our insulation team adds energy efficiency, comfort and value to new and existing homes.

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Commercial Insulation

Big City Insulation of Idaho is a leading installer of commercial fiberglass, rigid board and rockwool insulation.

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Insulation Removal

Big City Insulation of Idaho provides home insulation removal services.

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Window Coverings

Our team provides professional window blind and shutter installation for your home or business.

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