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Serving South Burlington, VT and surrounding areas. (802) 352-8211
Hidden gaps in your attic floor let heat escape all winter. We find and seal every one - so your home stays warmer, your bills go down, and ice dams stop forming on your roof.
Attic air sealing in South Burlington means finding and closing the gaps, cracks, and penetrations in your attic floor that let conditioned air escape from your living space into the cold attic above. The work uses foam, caulk, and rigid board to plug these hidden leaks before any insulation is added or replaced. Most jobs in a typical South Burlington home take one full day.
A large share of South Burlington homes were built between the 1950s and 1980s - long before air sealing was standard practice. If your home has never had this work done, heat is almost certainly escaping through the attic right now, and insulation alone will not stop it. Pairing attic air sealing with retrofit insulation is the most effective way to address both problems at once.
The most common leaks are not obvious cracks - they are around recessed light fixtures, where plumbing and electrical wires pass through the attic floor, and at the tops of interior walls. These spots are invisible from inside your home but can add up to the equivalent of leaving a window open all winter.
If your gas or electric bill seems out of proportion to your home's size, air leakage is one of the most common culprits. In South Burlington's long winters, even moderate air leakage adds hundreds of dollars to your annual heating costs. A home that is hard to keep warm despite a working furnace is often losing heat through the attic.
Ice dams are a reliable sign that warm air is escaping through your attic and melting roof snow unevenly. This is a well-documented problem in Chittenden County, where heavy snowfall and prolonged cold create ideal conditions. If you have seen icicles, ice ridges at the eaves, or ceiling water stains after a heavy snow, your attic is almost certainly leaking warm air.
If the rooms on your upper floor are consistently harder to heat, warm air is likely escaping through the attic floor above them. Cold air from the attic can also fall back through the same gaps, creating drafts near the ceiling. This pattern is especially common in South Burlington homes built in the 1960s and 1970s, where attic air sealing was simply never done.
Hold your hand near the edges of your attic hatch or pull-down stairs. If you feel a draft or see light coming through gaps around the frame, that is a direct air leak. The attic hatch is one of the most commonly overlooked air leakage points in older homes - and also one of the easiest to fix. If the hatch feels cold to the touch in winter, it is not insulated or sealed properly.
We offer complete attic air sealing for South Burlington homeowners - covering every gap and penetration in the attic floor before any insulation work begins. Our crews use the right material for each type of opening: spray foam for larger holes and irregular gaps, caulk for narrow cracks, and rigid board for big openings like dropped-ceiling chases. Every job is documented so you have a record of what was sealed.
Many homeowners find that attic air sealing pairs naturally with air sealing services for other areas of the home - basements, rim joists, and exterior walls can all be sources of air leakage that compound the problem. If you are ready to go further, we can also discuss a full retrofit insulation project that adds new material on top of the sealed attic floor.
Suited for most homes, closing gaps around light fixtures, plumbing penetrations, and wall tops before any insulation work begins.
Ideal for homes with unsealed pull-down stairs or hatch covers that are a direct path for conditioned air to escape.
Best for homes that need both tighter air barriers and higher insulation levels - seal first, then blow in new material.
South Burlington sits in one of the coldest climate zones in the continental United States, with a heating season that runs roughly seven months of the year. That means every gap in your attic floor is working against you for more than half the year, and the energy losses add up fast. Homeowners here tend to see a more dramatic improvement in comfort and bills after air sealing than homeowners in milder climates - because the problem is simply bigger here. Vermont's heating costs are real, and closing the attic is one of the highest-impact things you can do.
Ice dams are another local reality. They form when warm air escapes through the attic and melts roof snow unevenly, sending water toward the cold eaves where it refreezes and backs up under shingles. This is a well-known problem across Chittenden County and one of the most expensive winter repair bills a homeowner can face. Attic air sealing addresses the root cause - not just the ice itself. Homeowners in Williston and Shelburne deal with the same conditions, and we work across the entire area.
Vermont also has stronger energy efficiency incentive programs than most states. Efficiency Vermont, the state's energy efficiency utility, offers rebates for air sealing work done by approved contractors. The federal government adds a tax credit on top of that. For South Burlington homeowners, the actual out-of-pocket cost of this project can be meaningfully lower than the sticker price - sometimes significantly so. Efficiency Vermont is a good starting point for checking current rebate availability.
Call or submit a request online and we will get back to you within one business day to set a time. We ask basic questions about your home's age and any comfort issues so we arrive prepared.
We go into the attic to locate gaps around light fixtures, plumbing, electrical, and wall tops. A blower door test gives us a baseline measurement so we can show you a real before-and-after result.
You receive a clear written quote covering what will be sealed, which materials we use, and the total cost. We include any Efficiency Vermont rebates and federal tax credits you qualify for - no surprises.
The crew works through the attic systematically, applying foam, caulk, or rigid board to every gap. Most jobs finish in one day and leave your attic access area clean, with documentation you can keep.
Free estimate. No obligation. We reply within one business day.
(802) 352-8211We never add insulation over unaddressed gaps. Our crews seal all attic penetrations before any material goes in, which is the only sequence that actually delivers the energy savings homeowners expect. This approach is standard practice for us on every job.
We offer before-and-after blower door testing so you have real numbers, not just our word for it. You will know your home is tighter than it was - useful documentation whether you are filing for a rebate, refinancing, or selling your home.
Our team is familiar with Efficiency Vermont's rebate process and can walk you through the paperwork before we start. South Burlington homeowners who use approved contractors receive higher rebate amounts, and we make sure you capture what you are entitled to.
We work in Chittenden County homes every season and understand the local conditions that produce ice dams. If ice dam prevention is part of your goal, we address the ventilation and sealing details that matter for Vermont roof performance - not just a generic checklist.
Every one of these points comes back to the same thing: we do the work correctly, we show you proof, and we make the process straightforward. South Burlington homeowners who call us for attic air sealing are not guessing whether the job was done right - they know. The U.S. Department of Energy recommends sealing before insulating, and that is exactly the sequence we follow on every job.
Add insulation to your existing home without major construction - ideal after air sealing is complete.
Learn MoreWhole-home air sealing covering attics, basements, and every gap in between.
Learn MoreOur calendar fills up fast in fall - lock in your date now and go into the cold season with a tighter, warmer home.