Wall Insulation Company
for Connecticut Homes
We specialize in retrofitting wall insulation without tearing your house apart
Wall Insulation Benefits That Go Beyond R-Value
The benefits of using cellulose insulation.







When to Insulate Your Walls?
Here are common scenarios when you should insulate your walls.
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?
When did insulation become required in Connecticut homes?
Insulation became standard in Connecticut homes starting in the 1970s. However, homes built before 1980 often have minimal or no wall insulation, making them ideal candidates for energy retrofits to improve comfort and efficiency.
Can you insulate existing exterior walls without removing the drywall?
Yes, you can insulate existing exterior walls without removing drywall. Nealon Insulation uses dense-packed cellulose or blown-in fiberglass installed through small holes, filling wall cavities efficiently—ideal for retrofitting older homes.
How do I know if my walls are insulated or not?
You can check if your walls are insulated by looking for drafts, uneven temperatures, or by checking the home's age. Homes built before 1980 often lack wall insulation. Nealon Insulation uses thermal imaging or small inspection holes to confirm insulation presence.
What’s the best insulation for walls in Connecticut?
The best insulation for walls in Connecticut is often dense-packed cellulose. It offers strong air sealing, moisture resistance, and soundproofing. Spray foam and fiberglass are also effective, depending on your wall type and performance goals.
Will wall insulation help reduce noise inside my home?
Yes, wall insulation helps reduce noise by blocking sound transfer between rooms and from outside sources. It's especially effective in multi-story homes or properties near traffic, creating a quieter, more comfortable indoor environment.
Can you add wall insulation during a renovation or remodel?
Yes, you can add wall insulation during a renovation or remodel. Installing insulation is easier and more cost-effective when walls are open, making renovations the ideal time to upgrade energy efficiency and comfort.
How long does wall insulation take to install?
Wall insulation typically takes one to two days to install, depending on home size and whether old insulation must be removed. Nealon Insulation provides a clear schedule upfront to keep your project on track.
Is there a rebate or tax credit for insulating my walls in Connecticut?
Yes, Connecticut homeowners may qualify for rebates through Energize CT and federal tax credits for wall insulation. Nealon Insulation helps you handle the paperwork to ensure you receive every eligible incentive.
Reviews from our customers over 48 years

Great experience! Very friendly and professional. They were on time, stuck to their quote and work timeline and have done a great job with two projects for me. I would definitely recommend.
Ready To Start Saving?
Schedule your FREE home energy assessment today. No pressure, no obligation— just expert advice for your home's needs.