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Air Sealing Contractor in Southern NH, Southern ME & Northern MA

You turn up the heat, but one room still feels chilly. The attic is insulated, but you’re still losing warmth somewhere. In many New England homes, the problem isn’t how much heat you’re making. It’s how easily that heated air can escape.

Adam Vaillancourt Roofing & Gutters is the air sealing contractor helping homeowners across Southern New Hampshire, Southern Maine, and Northern Massachusetts address unwanted air leakage. Our residential air sealing services target gaps and openings that allow conditioned air to escape your living space and into areas like the attic.

Air sealing is typically completed before attic insulation so those hidden pathways can be addressed while they’re still accessible. The result is a home that can retain the air you’re already paying for to heat or cool it.

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What Our Air Sealing Services Include

Our air sealing services address leakage throughout your home, with additional services available when related attic or roofing concerns also need attention.

  • Attic Air Sealing: We seal gaps and penetrations around attic access points, plumbing, wiring, framing, and other areas that can allow household air to escape into the attic.

  • Basement and Rim Joist Sealing: Gaps around rim joists, sill plates, and other basement openings can allow outdoor air to enter the home. Sealing these areas helps create a tighter boundary at the lower level.

  • Ceiling Air Sealing: Recessed fixtures, wiring, plumbing, and other ceiling penetrations can create hidden pathways for air to move between your living space and the areas above it.

  • Wall Air Sealing: We address gaps and penetrations in exterior walls that can allow conditioned air to escape and let in unwanted outdoor air.

  • Crawl Space and Knee Wall Sealing: Air leakage around crawl spaces and knee walls can contribute to drafts and temperature differences in adjoining rooms. Sealing these bypasses helps limit unwanted airflow.

  • Penetration Sealing: Plumbing stacks, electrical lines, ductwork, and other openings that pass through the home’s air barrier are sealed where needed to reduce leakage.

Benefits of Professional Air Sealing

  • Fewer Drafts and Cold Spots: Uncontrolled air movement can prevent certain rooms from meeting the thermostat setting. Reducing leakage points helps your home maintain consistent indoor temperatures.

  • Better Energy Efficiency: Sealing unwanted air leaks helps keep conditioned air inside, reducing the energy your home loses through gaps and openings.

  • Enhanced Insulation Performance: Insulation slows heat transfer, but air can still move through gaps and penetrations around it. Home air sealing helps address those pathways so your insulation performs its best.

  • Less Heat Reaching the Attic: Air sealing helps keep warm household air from escaping into the attic, where it can heat the roof deck and contribute to ice dam formation during winter.

Ice Dam Prevention — A New England-Specific Benefit

Warm air escaping into the attic can heat the roof deck, melting snow that refreezes along the colder eaves. Attic air sealing helps reduce that heat loss, but ventilation, insulation, and other roof conditions can also contribute to recurring ice dams. Schedule an in-depth roof inspection to identify all other factors contributing to the problem.

Our Air Sealing Process

Schedule a residential air sealing inspection, and we’ll assess accessible areas, identify potential leaks, and walk you through our recommendations before the work begins.

Step 1 — Home Assessment

We start by inspecting accessible areas for signs of unwanted air leakage and the gaps or openings that may be causing it. This gives us a clearer picture of where your home is losing air and how to address it.

Step 2 — Recommended Scope

Next, we’ll show you what we found and explain where air sealing is recommended. We’ll also walk through the proposed work and pricing so you understand exactly what we’re planning to address.

Step 3 — Air Sealing Installation

Our team gets to work sealing the identified leakage points using methods suited to your home. The focus is simple: close the unwanted pathways that allow conditioned air to escape into unconditioned spaces.

Step 4 — Final Review

After the air sealing is complete, we’ll go over the finished work with you and answer all your remaining questions. You’ll know what was addressed and how those improvements support your home’s comfort and energy performance.

Air Sealing Services in Southern NH, Southern ME, & Northern MA

Adam Vaillancourt Roofing & Gutters provides residential air sealing across Southern New Hampshire, including Milford and Bow, as well as Southern Maine and Northern Massachusetts.

We work on homes in this region every day, so we know the issues cold weather can expose and how to fix them.

man working on construction project
worker inspecting finished insulation installment

Why Choose Adam V Roofing as Your Air Sealing Contractor

At Adam Vaillancourt Roofing & Gutters, we bring a local perspective to air sealing, tailoring our work to your property’s style and the local climate affecting it.

 

When you work with our team, you can expect: 

  • Local New England Experience: We work on homes across Southern New Hampshire, Southern Maine, and Northern Massachusetts, so we understand the cold-weather conditions that can worsen attic heat loss.

  • A Broader Attic Perspective: Our roofing and attic ventilation experience helps us understand how air sealing fits alongside insulation, moisture management, and proper airflow.

  • Clear Recommendations: We’ll explain what we find and where air sealing can help, so you understand the proposed scope before deciding how you’d like to move forward.

  • Serving Local Homeowners Since 2004: We bring more than two decades of New England experience to every project.

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What Local Homeowners Say About Adam V Roofing

Outstanding experience start to finish! Brad, Chris, Dawn Marie, Edwin, Roman and Yaz were amazing workers! Professional and great at communicating all aspects of the job. Thank you so much!
Satisfied CustomerGoogle
My wife already left a review on Google but we were very happy with our service. Tim was great and professional. He kept us updated and informed throughout the process.
Satisfied CustomerGoogle
Juan was professional and very accommodating. He kept me updated on the progress of the job and made sure everything was performed as stated in the contract.
Satisfied CustomerGoogle
Such an amazing team, and great quality work. They work fast and left the work site clean when they were finished.
Satisfied CustomerGoogle

FAQ Section

The cost of air sealing varies depending on the extent of the work and the accessibility of the space. We’ll provide you with a detailed pricing estimate and project timeline after performing an inspection.

Not when it’s done correctly. We’re sealing the gaps that let household air escape into the attic, not closing off the ventilation your attic needs. Proper attic airflow is still a critical component of your home comfort.

Yes, in instances when escaping heat is part of the problem. Ice dams can have several contributing factors, so recurring trouble may require a closer inspection.

Air sealing closes the openings through which air travels, while insulation slows heat transfer. That’s also why sealing is typically handled before new attic insulation is installed.

Request an Air Sealing Quote

As your local air sealing contractor, Adam Vaillancourt Roofing & Gutters can help you find where your home is losing air and seal the gaps that are letting comfort slip away. 

Keep the comfort you’re paying for inside your home. Get your residential air sealing quote today.

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