Insulating Historic Homes Without Compromise

Every historic home tells a story. We make sure your insulation upgrade improves performance—without rewriting what makes your home yours.

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Takes 30 mins

Zero Obligation

Same Day Quote

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EnergizeCT Network

Licensed & Insured

We Know What Historic Homes Need

After 48 years insulating Connecticut homes, we understand the specific challenges of a Historic property — and exactly how to fix them.

Full Home Evaluation — Not Assumptions

We assess every area of your home — attic, walls, basement, crawlspace — to find exactly where energy is escaping and comfort is suffering.

Update Outdated Insulation

Many Connecticut homes still have insulation installed decades ago. We identify what's outdated, poorly installed, or simply missing.

Comfort-First Recommendations

We prioritize your family's comfort — addressing cold rooms, drafts, and temperature inconsistencies before they become daily frustrations

Transparent Pricing

Our free estimates are detailed, honest, and obligation-free. We explain every recommendation and answer every question.

A smiling couple stands in a room under renovation with paint samples on the walls, holding floor plans and surrounded by moving boxes labeled 'Living Room' and paint cans.

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Our Services

Why the Connecticut community has trusted us for 48 years

Cellulose Insulation

Homeowners who want high performance, eco-friendly insulation that keeps pests out and bills down.

Fiberglass Insulation

Budget-conscious folks who need a quick, solid solution for big areas like walls or basements.

Spray Foam Insulation

Homeowners tackling air leaks, moisture problems, or new builds where long-term performance is key.

Mineral Wool Insulation

Mineral wool insulation offers durable thermal protection while resisting fire, moisture, and noise, helping improve comfort and energy efficiency throughout your home.

Batt Insulation

Batt insulation provides a reliable way to improve thermal performance in walls, ceilings, and floors, helping reduce energy costs while maintaining consistent indoor comfort.

Rigid Foam Board

Rigid foam board insulation adds a continuous layer of thermal protection, helping reduce heat loss, improve energy efficiency, and maintain more stable indoor temperatures.

Blown-in Insulation

Homeowners who want fast, seamless coverage that fills every crack and corner—perfect for attics, dense-packing walls, and boosting comfort without tearing the house apart.

Attic Insulation

Upgrading your attic insulation will ensure your home stays warm in the winter and cool in the summer. Our insulation also prevents mice from making a home in your home.

Basement Insulation

Is your basement too cold in the winter? This is usually due to a lack of insulation. We can make your basement more liveable.

Garage Insulation

Garage insulation helps regulate temperatures, making the space more comfortable year-round while reducing energy costs.

Ceiling Insulation

Ceiling insulation helps prevent heat loss and keeps indoor temperatures more consistent, improving comfort while lowering heating and cooling costs.

Wall Insulation

Complete wall cavity coverage for homes and commercial buildings. Our professional installation maximizes energy efficiency and comfort in any structure

Crawl Space Insulation

Crawl spaces are often not insulated properly. Ensuring the crawl space is insulated helps prevent moisture and heat loss for the home

Crawl Space Encapsulation

Homeowners who want to stop moisture, mold, and musty smells at the source—turning a damp, drafty crawl space into a clean, controlled foundation that protects the whole house.

Insulation Removal

Insulation removal clears out damaged or outdated material, improving air quality and making way for fresh, energy-efficient upgrades.

Mold Prevention & Treatment

Mold prevention helps protect your home from moisture damage by controlling humidity and sealing air leaks that allow condensation and mold growth.

Air & Vapor Barriers

Air and vapor barriers help control air leaks and moisture movement inside your home’s walls and ceilings, improving energy efficiency while reducing the risk of condensation and mold.

Pest & Rodent Barriers

Pest and rodent barriers help protect your home by removing contaminated insulation, sealing entry points, and improving attic conditions to reduce future infestations.

Air Sealing

Proper floor insulation is essential for maintaining a comfortable home by preventing heat loss through the floors, reducing energy costs, and minimizing drafts.

Attic Ventilation

Attic ventilation prevents moisture buildup and balances temperatures, protecting your roof while improving comfort and energy efficiency year-round.

Service Area

New Haven, Hartford, New London and everything in between.

Primary Service Areas

Branford

Chester

Clinton

Colchester

Cromwell

Deep River

Durham

East Haddam

East Hampton

East Haven

East Lyme

Essex

Glastonbury

Groton

Guilford

Haddam

Hamden

Hartford

Higganum

Ivoryton

Killingworth

Madison

Meriden

Middlefield

Middletown

Moodus

Mystic

New Haven

Newington

New London

Niantic

North Branford

North Haven

Old Lyme

Old Saybrook

Orange

Pawcatuck

Portland

Rocky Hill

Simsbury

Stonington

Wallingford

Waterford

Westbrook

Westerly

West Hartford

West Haven

Wethersfield

Why Choose Nealon?

Where Experience Meets Innovation in Home Comfort

Nealon was here for their second visit yesterday. I find their personnel helpful, thorough and knowledgeable. They also go that extra mile to do helpful things not in their job description. I would recommend Nealon for a very positive all around good experien--including their office staff.

Angela Young

Very happy with the insulation work done by Nealon. No dumpster needed as they will remove/bag your old insulation & haul away. Highly recommend.

Christine Ninteau

Nealon provided excellent service, extreme professionalism, and at a very competitive pricing. Highly recommend Nealon for any insulation needs.

Nick B

Cozy Winters, Cool Summers - Guaranteed

Experience year-round comfort with our precision installation guarantee

Your Home Deserves The Royal Treatment

Careful, clean, and respectful - we treat every project like it's our own family's home

Natural and
Eco-Friendly Products

Our products don't emit dangerous chemicals into your home

Trusted by Your Neighbors Since 1977

Join thousands of happy Connecticut homeowners who sleep better in their cozy homes

Get Your Free Estimate Get in Touch: (860) 669-0333