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Why Cellulose Insulation is Better than Fiberglass Insulation


Why Cellulose Insulation is Better than Fiberglass Insulation

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On episode 50 of the On The Job web series, Larry Janesky, owner and founder of Dr. Energy Saver, demonstrates how different types of insulation materials perform when exposed to fire.

In Episode 51, he continues to compare insulation materials, by showing the differences in performance of two types of materials commonly used in attic and wall cavity insulation: fiberglass and cellulose.

Fiberglass insulation is frequently used in the United States, but as this video will show, cellulose insulation outperforms fiberglass in the vast majority of applications.

Cellulose insulation is entirely made of recycled paper: old newspapers, phone books, and paper stock. To make that shredded paper suitable as an insulation material, the cellulose is treated with environmentally-friendly chemicals. In its original state, cellulose is very attractive to insects and known to support mold growth. Boric acid, a harmless chemical used for decades in many household applications as an antiseptic and insect repellent, is used to deter pests and prevent mold growth.

Also since paper is highly flammable, cellulose insulation is treated with a fire-retardant material, making it outperform most types of insulation materials, including fiberglass, in terms of fire resistance.

Using a little display built to compare cellulose and fiberglass, Larry shows how quickly and easily heat passes through a layer of fiberglass insulation when compared to a layer of cellulose insulation. Cellulose is denser than fiberglass and that gives the material a better R-value and makes it better at preventing heat transfer.

That kind of performance makes all the difference during hot summer months when you are trying to keep the scorching heat from the attic from getting into your living space, or during cold days when you are trying to keep the heat from the conditioned area from being transferred to the freezing cold attic.

Another added benefit of cellulose demonstrated in this video is the material's ability to muffle sounds from the street and from one room to another, making your home much quieter.

At Dr. Energy Saver, we use cellulose to insulate a variety of spaces. We dense-pack it into wall cavities, cantilevers, floors over the garage, and we blow it over attic floors. Our customers are always satisfied with the results in terms of added comfort and energy savings.

Our dealers work with most types of insulation and we believe that there is no blanket solution to home insulation, since each material has its own application. We also know that when it comes to energy efficiency, insulation is just one part of the puzzle.
When you call your local Dr. Energy Saver dealer for a home energy audit, the experts will evaluate your whole house and offer you the solutions and materials that will always give you the best results for each dollar you invest.

To contact a Dr. Energy Saver dealer in your area, call us or visit our website!

Attic Insulation: Blown Cellulose vs Fiberglass Batts

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Attic Systems dealers have been making thousands of homes across the U.S. more comfortable and energy efficient with attic insulation and air sealing.

Why is attic insulation so important? The temperatures in your attic change drastically in the winter and the summer.

Heat radiating from the roof keeps the temperature in your attic in the triple digits most of the season.
If your attic is improperly insulated, your ceiling will become hot and that heat will irradiate through your living areas.

In the wintertime, heat moves from your heated living space into your freezing cold attic.

Proper attic insulation is designed to stop heat flow between your attic and your home.

For that reason, our Attic Systems dealers will often recommend blown cellulose insulation over fiberglass batts.

Cellulose insulation have a higher R-Value than fiberglass, and when blow in an attic, it quick fills all the gaps and nooks.
Fiberglass batts have to be cut to size to fill the cavities and that often leaves many gaps for air and heat to flow through, reducing the R-Value of the Fiberglass even further.

Cellulose is also better at resisting the air flow that fiberglass. Cellulose insulation is also treated with fire retardant and insect repellent chemicals, making it overall safer and longer lasting.

Our Attic Systems dealers are committed to providing always the return for every dollar you invest in attic insulation, and that includes recommending and installing always the best materials.

With an Attic Systems Dealer you are always in good hands!

The Benefits of Using Cellulose Insulation Vs. Fiberglass Insulation

GreenFiber®...The Leader in Cellulose Insulation

On the lookout for smart, new ways to save energy and make your home more comfortable in the changing seasons? One of the most effective ways to do that is with energy efficient GreenFiber blown-in insulation.

When you want your home to be heated and cooled efficiently but you don't want to spend an arm and a leg doing it, cellulose insulation from GreenFiber is the perfect choice. It delivers the comfort you need plus piece of mind in knowing the insulation in your home is 57% more fire retardant than fiberglass, insect and termite resistant, and is 100% recyclable. GreenFiber is also two to three times denser than other insulation products resulting in superior sound control.

So whether you're purchasing loose-fill cellulose insulation for new construction or adding insulation to an existing home for additional R-value, GreenFiber provides a safe, durable, cost-effective solution to your insulation needs.

For product info & project tips or to learn more about McCoy’s “Born to Build” culture; visit our website at Proudly serving Texas, New Mexico, Oklahoma, Mississippi & Arkansas.

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Why you should choose fiberglass insulation vs. cellulose insulation

Using fiberglass insulation is easy, and unlike cellulose, it doesn’t leave as much dust. See for yourself in this video. Learn all the ways Owens Corning PINK® FIBERGLAS® Insulation delivers higher value than cellulose, with a focus on performance, fire safety, and code compliance.

To learn more about Owens Corning’s insulation products and solutions, visit

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Why Cellulose Insulation is Better Than Fiberglass or Spray Foam Insulation

Cellulose Insulation vs. Fiberglass Insulation vs. Spray Foam Insulation. Find out why Cellulose Insulation is better for a home.
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Fiberglass Vs Cellulose Insulation, Which is Better?

Have you ever wondered which type of insulation is better to use in your attic? It's a real knock-down, drag-out fight using a lot of science and a bit of FIRE, from Stevan Buren Roofing, Windows, & Flooring! Wherein Stacey Greenawalt dons several personas--AND does an experiment with fire--to illustrate the fundamental differences between blown (or loose-fill) fiberglass and cellulose insulation.

Original blog post:

Inspectapedia's similar fire experiment:

CSPC report on cellulose:

John Meeks Explains Cellulose vs. Fiberglass

John Meeks of Apple Blossom Insulation explains why fiberglass is bad and cellulose is good

Which is better Cellulose or Fiberglass? | Insta-Insulation

In this video owner Alex Schuts talks about both blown cellulose and fiberglass insulation. Alex will explain what he thinks of both products and what he would recommend for a home job.

Contact us today for your free consultation.
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What is the Best Attic Insulation? (Spray Foam vs. Fiberglass vs. Cellulose)

High energy bills...uncomfortable dams. You know it’s time to upgrade that old attic insulation, but what are the best attic insulation?

In this video we discuss and compare the most common insulation types used in attics today - cellulose, fiberglass, and spray foam.


Learn more about the best insulation for your attic:

After watching you should have a better understanding of the best attic insulation for your home and situation.

Typically, if you are looking for the cheapest way out, adding more traditional insulation may help for now. However, if you really want to transform your home’s comfort and energy efficiency, spray foam insulation is the better long-term option.

RetroFoam of Michigan is a spray foam insulation contractor serving Michigan’s lower peninsula, helping homeowners who are sick and tired of living in an uncomfortable house or paying high energy bills.

We specialize in insulating existing homes, new homes, and pole barns with foam insulation. We also enjoy educating homeowners about foam insulation through our videos, blog, and other educational resources on our website.



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Why this Insulation Pro Insists on Fiberglass vs. Cellulose for Best Results

Find out why Derek Fowler, co-owner of Aspen Insulation, prefers fiberglass over cellulose insulation for the best long-term value. When a builder requested draped cellulose, the architect on the project refused, citing concerns about settling, roof rot and other potential issues. Fowler details why he recommended the Owens Corning® HPCA (High Performance Conditioned Attic) system, and why it’s a smart choice for builders and homeowners, including its ability to help eliminate thermal bridging with a proven product that is also naturally non-combustible.

To learn more about Owens Corning’s insulation products and solutions, visit

Subscribe to get notified when new Owens Corning videos are posted:

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Why is Cellulose Insulation Better Than Foam?

Many consumers are asking why Cellulose Insulation is better than foam insulation. The experts at Dolphin Insulation in Littleton, Massachusetts answer this question and more with the makers of Cellulose Insulation, National Fiber. Find out why this product is a much better decision to make your home comfortable.

Adolfi's: Truth About Blown In Insulation

Learn about blown in insulation. In part 1 we will discover how the pros do it in new construction. Contact John Adolfi for any questions you have for a new home or an investment property. Adolfi Real Estate (315) 695-6434

GreenFiber Vs. Atticat Blown In Attic Insulation Comparison and How To

Going to insulate your attic, everything you need to know about the job and what to pick.

Cellulose Insulation: 5 Reasons To Use It In Your Attic

Cellulose insulation is a great choice for insulating your attic, especially if your family’s health is important. Blown-in cellulose is recyclable, easy to install and has a high R-value. But is it the perfect solution for your project? Rise CEO Matt Daigle recently installed insulation in his attic and chose blown in cellulose after considering fiberglass insulation, mineral wool, and natural materials. Follow along with footage from Matt’s installation, and his lessons from his tough buying decision.


How to choose the best insulation for your home:

Facts about blown-in cellulose insulation:

Formaldehyde Hotspots in the Home:

Facts about fiberglass batt insulation:

#Cellulose #insulation #attic

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Could cellulose insulation be causing toxic dust in my home?

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Why Cellulose Insulation is Better

Watch the demonstration on cellulose insulation performing better than fiberglass insulation, and hear the facts.

Insulation cellulose vs fiberglass

In this video, Mr. Kongable discusses the different types of insulation and the application of them.

Cellulose vs FIberglass Insulation Sound Proofing Demonstra

Cellulose Insulation and Fiberglass Insulation are compared in this demonstration to show the sound proofing differences in the two leading insulation products.

See for yourself! Cellulose vs. Fiberglass insulation part 1

Cellulose Insulation proves to be over 800% more effective than Fiberglass Insulation as a thermal barrier between your ceilings and the inferno-like conditions in your attics!

Biggest Attic Insulation Scam... REVEALED!

The problem of fluffing is rampant among attic insulation companies and Ed is going to tell you all about it! Watch the video and learn how you can know what to ask for to prevent this scam from happening to you.

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