Top 5 Benefits of Fiberglass Insulation

Fiberglass insulation is a popular material used to regulate temperatures within homes and commercial properties. 

If you’re interested in learning more about the benefits of fiberglass insulation, as well as getting answers to some questions surrounding it, read more below. 


1. Affordable Insulation

The upfront cost to purchase fiberglass insulation is competitive with other insulation materials, making it a good low-cost option. 

It boasts a strong R-Value and thermal conductivity, which can lead to lower energy bills in the long run. It also lasts a long time, usually between 10 to 20 years. And it can reduce heating and cooling bills by 40% or 50%. 

2. Lowers Noise Pollution

Fiberglass insulation has good acoustical properties, absorbing and blocking sound waves and ultimately reducing the amount of noise passed through a wall or ceiling. 

It’s commonly used for this purpose in commercial and industrial settings. Its density, thickness, and method of installation will determine to what extent it can block out noise. 

3. Eco-Friendly Material 

Fiberglass insulation is made from recycled glass and, once used, can be recycled instead of thrown into the trash. 

Manufacturers used to treat it with formaldehyde ( a toxic chemical that damages soil, water, and human health), but most manufacturers have since stopped. 

Today, most fiberglass material is produced in an energy-efficient manner that contributes to lower carbon emissions. 

4. Easy to Install 

It’s easy for a homeowner or contractor to install fiberglass insulation. 

Whether it’s cutting insulation batts into specific sizes and placing them in your attic or wall space or using a blowing machine to distribute loose fiberglass insulation, installation doesn’t require special equipment, tools, or knowledge. 

It’s lightweight, flexible, and easy to handle, coming in a variety of forms: batts, rolls, loose-fill, and spray, which can be uniquely tailored to suit your building project needs. Unlike spray-in-cellulose foam insulation, this won’t require special equipment to complete. 

5. Mold & Mildew Resistant 

Fiberglass insulation is a naturally mold-resistant material. The material is, however, fibrous and will trap moisture which can lead to a condensation problem if not handled properly. 

This is easily avoided by purchasing faced insulation in which one side is covered with a paper product that captures moisture while protecting the insulation material. 

Is Fiberglass Insulation Toxic?

Fiberglass insulation material has gotten a bad reputation over the years for its toxicity and potential for serious health hazards. 

However, despite what you may have heard, it’s far less toxic than polyurethane spray foam, rigid foam with flame retardants, or antiquated insulation types containing formaldehyde or asbestos (both of which have since been banned). 

So long as you adhere to standard safety precautions, just as you would for spray-in foam insulation, you shouldn’t encounter any problems using fiberglass. 

It’s no different than other types of insulation, including rockwool or cellulose — both of which require the same use of a protective mask and clothing. 

For this reason, fiberglass is considered consumer safe by almost all health and safety organizations. 

What Are the Dangers of Fiberglass Insulation?

Fiberglass insulation is made up of tiny glass fibers (between 40-60% come from recycled glass). If inhaled, these fibers can irritate the lungs and cause “fiberglass lung.” Some of the symptoms include coughing, chest tightness, and shortness of breath.

You absolutely must wear personal protective equipment, like goggles, gloves, or a mask, to handle this material safely. 

Keep in mind that many homeowners and builders opt for modern alternatives, be it cellulose, mineral wool, or styrofoam. 

What is the R-Value of Fiberglass Insulation? 

R 2.9 -3.8 per inch. This is a lower R-value than other popular insulation types like rockwool and cellulose. 

What Is the Recommended Thickness of Fiberglass Insulation for a Specific Application? 

Batt and rolled fiberglass insulation are available in numerous R-values and lengths, as well as thicknesses. 

Thickness depends on where you live and where the insulation is placed. 

For colder climates, 15-½ inches of thickness are necessary, whereas fiberglass with 9-½ inches of thickness are for normal scenarios.