Cellulose Insulation:
The All-in-One Insulation Solution
Cellulose is perfect for maximizing comfort, minimizing costs, and protecting your family from all the elements.
Cellulose Insulation is Awesome
The benefits of using cellulose insulation.
Cost
Cellulose gives you the best bang for your buck—solid performance without draining your wallet.
R Value
Packed tight, cellulose delivers serious R-value that holds strong through rough New England winters.
Insect & Rodent Inhibitor
Pests hate cellulose because it’s treated with borate—think of it as insulation with a built-in ‘keep out’ sign.
Mold & Fungus Inhibitor
It’s paper, yeah—but treated to fight mold like a bouncer at a bad club.
Air Sealant
Like a cozy blanket wrapped around your home, dense-packed cellulose plugs air leaks like a champ, stopping drafts better than grandma’s favorite quilt.
Fire Retardant
Treated cellulose doesn’t just insulate—it slows fire like your own personal fire department.
Net Zero
* Made from recycled materials, cellulose is the go-to for folks chasing comfort and carbon savings.
When to Choose Cellulose?
Here are common scenarios when cellulose is the right insulation choice for you.
Older Connecticut Homes
You’ve got walls with little to no cavity insulation, and winters that make your toes curl? Dense-packed cellulose slides right into those wall cavities without tearing the place apart—and turns your older house into a cozy fortress.
Pests and Mice are a Problem
You’re tired of mice turning your fiberglass batts into Airbnb rentals? Switch to cellulose—treated with borate, it tells rodents and bugs to find another address.
Eco-friendly and Net Zero
You want comfort, performance, clean air, and you want to feel good about it? Cellulose checks all the boxes—it’s recycled, fire-resistant, air-sealing, and made for folks who want high performance without high impact.
Your Path to Superior Insulation Starts Here
Efficiency Meets Excellence, Every Step of the Way
Building science is complicated. Our estimators don't just tell you what we'll do, they explain why we're doing it.
We work with your timeline and availability. We typically schedule 2 - 4 weeks out
You will have a dedicated project lead and project manager who will walk you through every step of the process
Your home becomes your comfort zone, as you stop dealing with drafty rooms, inconsistent temperatures, and high energy bills.
The Nealon Difference
Where Historic Charm Meets Modern Efficiency – Without Compromise
Older Home Specialists
As EPA Lead-Safe certified contractors, we understand the unique challenges of insulating historic New England homes.
Proven Energy Savings
Our customers typically see a 30% reduction in energy costs after our professional insulation services. Your investment often pays for itself through years of lower utility bills.
Professional Energy Assessment Process
Every project begins with a thorough energy assessment to identify your home's specific needs.
Frequently Asked Questions?
What is cellulose insulation made of?
Cellulose insulation is made of recycled paper, mainly newsprint, treated with fire-retardant chemicals like boric acid. The paper is ground into a fibrous form that traps air, creating thermal resistance. It’s an eco-friendly option commonly used in walls. attics, garages and basements.
Will cellulose catch fire since it’s made of paper?
No, cellulose insulation will not easily catch fire because it is treated with fire-retardant chemicals like boric acid. Although made from recycled paper, the treatment allows it to meet safety standards and resist ignition under typical conditions.
Does cellulose get moldy if it gets wet?
Yes, cellulose insulation can get moldy if it remains wet for too long. Although treated with mold inhibitors, prolonged moisture exposure can still lead to mold growth. Proper ventilation and moisture control help prevent this issue.
Can cellulose be used in old homes with plaster walls?
Yes, cellulose insulation can be used in old homes with plaster walls. Installers use a drill-and-fill method to inject dense-pack cellulose into wall cavities without removing plaster, improving energy efficiency while preserving original structures.
Is cellulose safe for people with allergies?
Yes, cellulose insulation is generally safe for people with allergies. It’s made from recycled paper and treated with non-toxic borates to resist mold and pests. Installation can release dust, so protective gear is recommended to prevent irritation.
How does cellulose compare to spray foam?
The main difference between cellulose and spray foam is that cellulose is a low-cost, recycled material with good thermal performance, while spray foam offers a higher R-value per inch and superior air sealing. Spray foam costs more but blocks drafts more effectively.
Will cellulose settle over time and lose effectiveness?
Yes, cellulose insulation can settle over time if not densely packed. Settling creates air gaps and reduces thermal performance. Using dense-pack installation methods prevents excessive settling and helps maintain long-term effectiveness.
Is cellulose more expensive than fiberglass?
No, cellulose insulation is generally less expensive than fiberglass. It delivers similar thermal performance at a lower cost and is often more affordable for retrofitting older homes due to its recycled materials and easy installation.
Does cellulose attract mice since it’s made of paper?
No, cellulose insulation does not attract mice even though it's made of paper. It is treated with borates, which deter pests. While not fully rodent-proof, cellulose is less attractive to mice than untreated insulation materials.
Can cellulose be used in ceilings or floors?
Yes, cellulose insulation can be used in ceilings and floors. It reduces sound between levels, improves thermal performance, and resists pests and fire. Dense-pack or blown-in cellulose works especially well in attics and between floors when installed correctly to prevent settling.
How thick does cellulose insulation need to be?
In Connecticut, cellulose insulation should be 10–11 inches thick for R-38 and 14 inches for the recommended R-49. These levels improve energy efficiency and comfort. Always measure thickness after settling and check local building codes for exact requirements.
Reviews from our customers over 48 years
Nealon did an outstanding job in terms of courteous services, as their team members, as well as Chris who was responsible for directing the job, were most professional!!! They cleaned up nicely, and my goods remained intact. Also and happily stated, it’s been one week since they’ve installed insulation in our home, and we notice a huge difference in the amount of energy we are using for heating…which equates to $avings!!! In short, we’d use them again, and glad we chose them for this endeavor!!!
Highly recommended. Their estimate was competitive, the work was done in a timely and clean manner, they explained what was done, and our house is warmer as we head into the winter. When we had a question, they came back out to talk with us and helped us answer our questions. I will use them again and recommend them to anyone.
They are an amazing company to do work with! Jen in the office is polite, pleasant, and very competent. The work was done well and very quickly. We had our attic and basement insulated. I would 100% recommend!
The Nealon team was professional and considerate of my property. I noticed a 200-kilo watt decrease in my electric bill along with an additional savings in oil consumption of 50 gallons. No more drafty cellars and so far, the mice have gone elsewhere.
Fast, efficient and great price! Didn’t even notice them insulating our attic and making a big difference already! Would highly recommend for anyone that wants to cut down on their energy bill!!
Nealon Energy Solutions has been my go to company for my personal property energy solutions & savings and all of my residential remodeling projects. as a remodeling contractor myself, I take pride in utilizing quality trades people, using quality products that perform at the top of their game. Nealon has the depth of experience that is in my opinion unmatched in the CT business market. Clients appreciate the thorough explanations of the options available to them, the professional execution of the contracted work and the cleanliness of the project when the work is completed. GO NEALON!!
Ready To Start Saving?
Schedule your FREE home energy assessment today. No pressure, no obligation— just expert advice for your home's needs.