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Serving Essex, VT and surrounding areas. (802) 876-8645
Most of the heat your home loses every winter goes through gaps you cannot see. We find them with a blower door test and seal them for good - so your heating system stops fighting a losing battle.
Air sealing services in Essex mean finding and closing the small gaps, cracks, and openings where outside air sneaks in and conditioned air leaks out - most jobs are completed in one to two days, and you do not need to leave your home during the work.
Most air leaks are not obvious. They hide in the attic floor around plumbing and wiring, along the rim joist above your foundation, and behind electrical outlets on exterior walls. If your Essex home was built before the 1990s, it almost certainly was not built with air barriers - meaning those gaps have never been addressed. Adding insulation without sealing those gaps first is like putting on a warm jacket with the zipper open. Pairing this service with basement insulation addresses both the gaps in the attic and the cold coming up from below.
The most reliable way to find those leaks is a blower door test - a calibrated fan mounted in your front door that briefly depressurizes the house and reveals exactly where air is moving. We run this test before and after the work so you have a real number showing the improvement, not just a promise that it happened. For homeowners dealing with ice dams, high heating bills, or rooms that never stay warm, this is often where the answer is.
If you are burning through fuel oil, propane, or electricity at a rate that surprises you every winter, air leakage is one of the most common causes. Essex winters are long and cold, and a leaky home makes your heating system work overtime even when the thermostat is set the same as your neighbors'.
On a cold morning, walk along your exterior walls and hold your hand near electrical outlets, baseboards, and where walls meet the floor. If you feel cool air moving, that is outside air finding its way in. This is especially common in Essex homes built before the 1990s, where air barriers were rarely installed.
Ice dams - the ridges of ice that build up at the edge of a roof in winter - are often caused by warm air escaping through the attic and melting snow unevenly. If you see them forming each year, or if snow melts off your roof faster than your neighbors', heat is escaping from your living space into the attic.
When the attic floor is not properly sealed, warm air from your living space rises and escapes, pulling cold air in from below. The result is rooms that never quite reach the temperature on your thermostat no matter how high you turn the heat - a consistent sign that attic air sealing is needed.
We handle air sealing as a standalone service or combined with insulation - whichever fits your home and your goals. Standalone air sealing focuses on the attic floor, rim joist, and major penetrations: the spots that account for the majority of heat loss in most older Essex homes. We use spray foam for larger gaps and irregular shapes, and caulk or acoustical sealant for smaller cracks and joints. The work happens mostly out of sight - in the attic, basement, and crawl spaces - so your living space stays undisturbed.
We also offer targeted attic air sealing for homeowners who have identified the attic as the primary source of heat loss or ice dams. When air sealing is combined with insulation - which it often is - we address both in the same visit, saving you time and making sure the insulation performs the way it should. Every project includes a before-and-after blower door test as a standard part of the job.
Best for homeowners who want to address leakage throughout the house - attic, basement, rim joist, and wall penetrations covered in one visit.
Targeted sealing of the attic floor for homes where heat loss and ice dams are the primary concern - the highest-impact single location in most Essex homes.
Spray foam applied to the rim joist above the foundation to stop cold air from entering at the base of the home - often combined with basement insulation.
For homeowners who want both services in one visit - seal the gaps first, then add insulation on top for the full benefit of both improvements.
Essex sits in Chittenden County and regularly sees temperatures drop well below zero from December through February. The colder it gets outside, the harder your heating system works to compensate for every gap in your home's envelope. Vermont's repeated freeze-thaw cycles - where temperatures swing above and below freezing dozens of times each winter - also cause wood framing, masonry, and old caulk to open up new gaps over time. A home that was partially sealed 15 years ago may have developed significant new leakage since then. Homeowners across the area, from Jericho to Shelburne, face the same freeze-thaw stress on their homes every year.
Vermont is also home to Efficiency Vermont, the nation's first statewide energy efficiency utility, which offers real rebates on air sealing work done by qualified contractors. Income-eligible households may qualify for Vermont's Weatherization Assistance Program, which can cover the full cost. For most air sealing projects in Essex, no building permit is required - but if your project includes mechanical ventilation equipment, we will tell you upfront. You can verify current permit requirements through the Town of Essex planning office.
We ask a few basic questions - your home's age, heating fuel type, and what prompted you to reach out. We reply within one business day and can usually schedule an initial visit within a week or two, though fall bookings fill faster.
We mount a calibrated fan in your front door, briefly depressurize the house, and use that pressure difference to find exactly where air is moving in. You get a concrete leakage number before we do any work - so you have something to compare against afterward.
The crew works systematically through the areas identified - attic floor penetrations, rim joists, plumbing and wiring gaps, and any other leakage points. Small cracks get caulk; larger gaps get spray foam that expands and hardens to fill irregular shapes.
We run a second blower door test after the work is complete so you can see the improvement in numbers. We clean up the work areas and walk you through exactly what was sealed and why before we leave.
Free estimate with a blower door assessment. No obligation. We reply within one business day.
(802) 876-8645We measure your home's air leakage before and after the work so you have a real number showing the improvement - not just our word that it went well. This is standard on every job we do, not an add-on.
Vermont's rebate programs for air sealing are real and worth using, but navigating the paperwork adds friction most homeowners do not need. We handle the process for you and walk you through your eligibility during the estimate - before you commit to anything.
Sealing the attic floor is the most effective thing an Essex homeowner can do to reduce ice dams. We understand the connection between air movement, heat loss, and roof behavior - and we address the cause, not just the symptom. TheEPA indoor air quality guidance informs how we balance tightness with ventilation on every project.
The older homes in Essex and Essex Junction were never built with air sealing in mind. We know where the leaks hide in 1960s and 1970s construction - the rim joists, the top plates, the recessed lights that open straight into the attic - because we have sealed them hundreds of times.
These are not marketing promises - they are the specific things that make air sealing work or fail on an older Vermont home. When you can measure the improvement before and after, and when you know the contractor has done this on hundreds of Essex-area homes, the decision is straightforward.
Insulate and seal the rim joist and basement walls to stop cold air from rising through your floor system.
Learn MoreTargeted sealing of the attic floor - the single biggest source of heat loss and ice dams in most Essex homes.
Learn MoreThe sooner your home is sealed, the sooner you stop paying to heat the outdoors. Call or get a free estimate today.