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Serving Mount Pleasant, SC and surrounding areas. (854) 858-0208
Your attic floor has gaps around every pipe, wire, and light fixture - and hot, humid coastal air flows through them all summer long. Sealing those gaps is the most direct fix for high cooling bills and rooms that never cool down.
Your attic floor has gaps around every pipe, wire, and light fixture - and hot, humid coastal air flows through them all summer long. Sealing those gaps is the most direct fix for high cooling bills and rooms that never cool down.
Attic air sealing in Mount Pleasant means a technician enters your attic and applies foam and caulk to seal every gap in the attic floor - around pipes, wires, recessed light cans, wall tops, and the attic hatch - and most homes are completed in a single day.
Many homeowners in Mount Pleasant confuse insulation with air sealing - they are not the same thing. Insulation slows heat from moving through surfaces, but it does not stop air from flowing through gaps. If your attic floor has not been sealed, conditioned air escapes upward and hot outdoor air rushes in to replace it - no matter how much insulation is on top. Homes built before roughly 2000, which describes a large share of Mount Pleasant's housing stock in neighborhoods like Snee Farm and Old Village, were typically built without any attic floor sealing at all. Pairing this work with air sealing services throughout the rest of the home addresses the full picture.
The impact here in the Lowcountry is larger than in drier climates because Mount Pleasant's long cooling season - roughly April through October - means any air leak is costing you money for most of the year. Once the gaps are sealed, most homeowners notice more even temperatures from room to room and a difference on their energy bill within the first full month. If you are considering adding or upgrading insulation, pairing that work with retrofit insulation is the most efficient way to address both problems at once.
If the second floor or rooms near the ceiling stay noticeably warmer than the rest of the house during a Mount Pleasant summer, hot attic air is likely leaking into your living space. The gap between what your thermostat reads and what a room actually feels like is a reliable indicator that conditioned air is escaping upward. This is one of the most common complaints from homeowners in older Mount Pleasant neighborhoods during July and August.
If your electricity bill climbs dramatically from May through September - well beyond what you would expect just from running the AC more - unsealed attic gaps are a likely contributor. In a coastal South Carolina climate, a leaky attic can add real money to your annual cooling costs. If your bills feel high relative to your neighbors or to a previous home of similar size, an energy assessment is worth scheduling.
Stand near a recessed ceiling light on a hot day and hold your hand close - if you feel warm air coming through, that fixture is connected directly to your attic. Similarly, if your pull-down attic stairs feel warm to the touch or let in a noticeable draft, those are gaps that are actively working against your air conditioner every day of the cooling season.
Mount Pleasant's coastal environment means outdoor air carries pollen, salt, and humidity. When that air is being pulled into your home through attic gaps, it brings those things along. If your home feels dustier than it should, or if you notice a faint musty smell that you cannot trace to a specific source, uncontrolled air movement through the attic is a possible cause worth investigating.
We handle attic air sealing for homes across Mount Pleasant and the broader Charleston metro. The work starts with identifying every penetration through the attic floor - around pipes, electrical wires, recessed light cans, wall top plates, and the attic hatch - and systematically sealing each one with spray foam or caulk. For many homes in older Mount Pleasant neighborhoods, this is the single most impactful improvement they can make for their cooling costs.
Every job we do includes a blower door measurement before and after sealing so you have a real, verifiable number showing the improvement - not just a contractor's word. For homes that also need insulation work, we coordinate attic air sealing with retrofit insulation so the two jobs are done in the right order: seal first, then insulate on top. If broader whole-home efficiency is the goal, we can also connect this work to our full air sealing services that address other parts of the building envelope. Call us at (854) 858-0208 or submit an estimate request online to get started.
Foam and caulk applied to every opening in the attic floor - pipes, wires, light cans, and wall tops - suited to homes that have never had any sealing work done.
Pull-down stairs and attic hatches are often the single biggest air leak in older homes - this targets that specific opening with weatherstripping and an insulated cover.
Includes a measured blower door test before and after sealing so you have a real number showing exactly how much tighter your home became - best for homeowners who want verification.
Mount Pleasant sits in a hot-humid climate zone where summer temperatures regularly reach the low 90s and the humidity stays elevated for months. When your attic has unsealed gaps, that hot, sticky outdoor air pours into your living space and forces your air conditioner to work much harder than it should - for the better part of seven months. The homes that benefit most here are the ones built before modern energy standards, and Mount Pleasant has a lot of them. Homes built in the 1970s through 1990s in neighborhoods like Snee Farm and Old Village were constructed before air sealing was a standard part of the building process, which means there are likely significant gaps in those attic floors that have never been addressed.
The coastal setting adds another layer of complexity. Mount Pleasant's proximity to the Intracoastal Waterway means the air here carries more moisture than inland South Carolina, which is why it matters to hire someone with specific experience in humid-climate homes. Homeowners in James Island and Isle of Palms face the same coastal humidity challenges - and the same payoff when attic gaps are properly sealed. Checking available incentives before scheduling is worth a few minutes: DSIRE lists current federal and state rebate programs for South Carolina homeowners.
We ask a few basic questions - your home's age, approximate size, and what is prompting you to call. You will hear back within one business day to confirm your free assessment appointment. There is no commitment required at this stage.
A technician visits your home, spends time in the attic identifying gaps, and typically runs a blower door test to measure how much air the house is currently leaking. You get a written estimate explaining exactly what was found and what sealing work is recommended.
The crew enters the attic and systematically seals every penetration - pipes, wires, light fixtures, wall tops, and the attic hatch itself - using foam and caulk applied directly to each gap. For an average Mount Pleasant home, this takes four to eight hours. Your living space is not disturbed.
Once sealing is complete, we run a second blower door test and share both readings with you so you can see the improvement. We walk through what was done and leave you with documentation. Your home is fully usable as soon as we leave - no curing time required.
We respond within one business day, provide a written estimate with no obligation, and never pressure you to decide on the spot.
(854) 858-0208We hold a valid SC contractor license verifiable through the SC Contractors' Licensing Board. Licensed work protects you - it means we carry required insurance and are accountable to a state regulatory body. Unlicensed work leaves you with no recourse if something goes wrong.
We provide measured blower door tests before and after every attic air sealing job. That means you get a real number - not a promise. You can see exactly how much tighter your home became, which is the only honest way to verify this kind of work was actually done right.
Attic air sealing in Mount Pleasant is not the same as work in a dry inland climate. Our approach accounts for the humidity conditions here - making sure ventilation is correctly balanced after sealing so you get the energy benefits without creating moisture problems in the attic.
We have been working on homes in the Charleston metro - including established neighborhoods and newer subdivisions across Mount Pleasant - since 2016. We know this market, the housing stock, and what the Lowcountry climate does to homes over time.
Attic air sealing is one of the few home improvement investments that pays you back in the first year. If your home was built before 2000 and you have never had an energy assessment, the chances are strong that there is real money to recover - and the U.S. Department of Energy confirms that properly sealing and insulating a home can cut heating and cooling costs meaningfully. We are here to help you find out where you stand.
Add insulation to your existing attic or crawl space without tearing out walls - often combined with air sealing for maximum impact.
Learn MoreWhole-home air sealing that addresses leaks throughout the building envelope, not just in the attic.
Learn MoreMount Pleasant summers are long - call today and we will get your home assessed and sealed before the heat arrives, so you stop paying for air that was never yours to cool.