By the Airlock Insulation Team
Choosing the Smarter Insulation Option for Northeast Ohio Homes
At Airlock Insulation, we don’t just install insulation—we live it. After insulating more than 500 homes in Northeast Ohio and constantly educating ourselves on the best materials, we made a clear decision to specialize in Nu-Wool cellulose insulation instead of fiberglass. This article explains why we made that call—and why you, as a homeowner, should consider the same path.
What’s the Real Difference Between Cellulose and Fiberglass?
Most homeowners know there’s more than one kind of insulation, but don’t always understand the difference. Here’s the short version:
| Feature | Cellulose (Nu-Wool) | Fiberglass |
| Material Composition | 86% recycled newspaper + all-borate treatment | Spun glass fibers |
| Air Infiltration Control | Excellent (denser material seals gaps better) | Moderate |
| Mold and Moisture Resistance | Mold resistant due to borate treatment | Can trap moisture and foster mold |
| Soundproofing | Superior sound control | Basic sound dampening |
| R-Value Performance in Cold | Maintains R-value in low temperatures | R-value drops in extreme cold |
| Safety and Health | Non-toxic, no glass dust, no off-gassing | Can irritate skin/lungs, off-gassing |
Why We Made the Switch (And Never Looked Back)
Airlock Insulation got its start when founder Joseph Wolf learned the trade from his father, who began insulating homes in 1989, and the crew worked with all kinds of materials back then. But over the years, as building science advanced and health and energy efficiency concerns became more central, cellulose started pulling ahead in every way that matters.
Nu-Wool cellulose isn’t just better for insulation—it’s better for people.
- It’s safer for our crews to handle day after day.
- It’s better for the environment (hello, 86% recycled content!).
- It actually performs better in real-world conditions—especially during Northeast Ohio winters.
We believe in doing things once and doing them right. We won’t sell you a solution we wouldn’t use in our own homes.
Customer Example: The Before-and-After Attic Reveal
One of our customers in Lake County had fiberglass batting in the attic that looked fine on paper but was underperforming. Cold spots, high bills, and moisture issues told the real story.
After switching to Nu-Wool cellulose with our AIRLOCK Air Seal process, the attic became a thermal blanket. Their heating bills dropped noticeably, and we eliminated a draft that had plagued their upstairs hallway for years.
They called back a month later just to say, “I can’t believe how much more comfortable the house is.”
Common Misconceptions About Fiberglass
Let’s clear up a few myths we hear often:
“Fiberglass is cheaper.”
Yes, upfront. But it can cost more in energy loss and comfort issues over time.
“It’s easier to DIY.”
That might be true—but DIY installs often skip air sealing, leave gaps, and underdeliver.
“It’s good enough.”
We don’t believe in “good enough.” We believe in best fit for long-term comfort and savings.
A Word from the Airlock Team
Our crew treats every customer’s home like it’s one of our own. Airlock Insulation founder Joseph Wolf is a father of 11, and he knows firsthand the value of safety, comfort, and wise investment—that’s the standard he built into the company. That’s what Nu-Wool cellulose brings to the table. We use it because it reflects our values—doing no harm, delivering lasting results, and serving families with care.
If you’re still wondering which insulation is right for you, give us a call. We’d be happy to walk through your options, provide an honest assessment, and help you make the best long-term choice.
“Why Cellulose Beats Fiberglass in Real Homes (With Joseph from Airlock Insulation)”
Want a free attic evaluation or just have questions?
📞 Call us at 440-578-7919 or schedule online today!
