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Serving Key West, FL and surrounding areas. (645) 300-7168
Every gap in your home's shell is costing you money. Our air sealing service finds and closes them so your AC works less and your home stays comfortable.
Air sealing in Key West means finding and plugging every gap, crack, and opening in your home's shell so your conditioned air stays inside and humid outdoor air stays out. Most whole-home jobs take one day, the work happens in attics and crawl spaces rather than your living areas, and the results are verified with a blower door test you can see with your own eyes.
Key West homeowners run their air conditioners nearly every day of the year, which means every invisible leak in your home's envelope is costing you money every single month. Older Conch-style and wood-frame homes are especially prone to leaks - they were designed to breathe before air conditioning existed, which means gaps and open soffits that made sense in 1920 work against you now. Air sealing works best when paired with good attic air sealing, since the attic is often where the most significant leaks are concentrated in older homes.
The U.S. Department of Energy estimates that air leaks can account for 25 to 40 percent of the energy used for heating and cooling in a typical home. In Key West, where cooling is a year-round expense, sealing those leaks is one of the most cost-effective improvements you can make.
If your Keys Energy bill has been rising month after month and you have not added new appliances or changed your habits, air leaks are a likely culprit. In Key West's climate, your air conditioner is fighting a constant battle against outdoor heat and humidity - and if air is escaping through gaps in your home's shell, that battle gets harder and more expensive every month.
If one bedroom or corner of your home always feels warmer and stickier than everywhere else, even with the AC running, conditioned air is likely escaping nearby and outdoor air is sneaking in to replace it. In older Key West homes, this is especially common in rooms near the roofline or at the ends of the house where construction gaps tend to accumulate.
Hold your hand near an electrical outlet on an exterior wall on a hot day. If you feel warm air coming through, that outlet is connected to the outside through gaps in the wall cavity. This is one of the most common and easily overlooked air leak locations in any home, and it is especially telling in Key West where the temperature difference between inside and outside is dramatic.
Key West's humidity is relentless. When warm outdoor air finds its way into your attic or wall cavities through unsealed gaps, it can condense and create the damp conditions that mold needs. A musty smell in a room without obvious water damage, or faint staining on ceiling drywall, can be an early warning that humid air is getting in somewhere it should not.
We start every job with a blower door assessment - a large fan mounted in your front door that depressurizes the house and reveals exactly where air is escaping. We then move through the home with detection tools to pinpoint leaks you would never find by eye. Once the leaks are mapped, we seal them using foam, caulk, weatherstripping, or rigid materials depending on the location and size of each gap. After the sealing work is done, we run the blower door test again so you have a before-and-after number showing the measurable improvement.
We pair air sealing work with basement insulation and attic air sealing for homeowners who want to address the full envelope at once. Bundling these services in a single project saves on labor mobilization and delivers a faster payback on your investment.
Best for homeowners who want to address every gap and crack in one project - the blower door assessment ensures no leak is missed before we seal.
Ideal for older Key West homes where the biggest leaks are concentrated at the ceiling plane, around recessed lights, attic hatches, and roof penetrations.
Suited to homes with high concentrations of pipe, wire, and HVAC penetrations through floors and walls that are letting conditioned air escape continuously.
The right choice when your home needs both gap sealing and insulation upgrades - addressing both together maximizes comfort improvement and energy savings.
Key West averages more than 230 days above 80 degrees Fahrenheit each year, and outdoor humidity regularly sits above 75 percent. That means every gap in your home's shell is not just an energy drain - it is also an open pathway for moisture-laden air that can condense inside your walls and ceilings. Salt air from the ocean also degrades caulk and foam sealants faster than in inland locations, which means materials need to be chosen for durability in a coastal environment. Monroe County also has some of the strictest building codes in Florida because of hurricane risk, and a contractor who understands those requirements will save you from work that has to be redone at inspection.
We work across the island and the surrounding Keys, including homes in Key Haven and Cudjoe Key. Whether your home is a historic Conch-style house near Old Town or a newer elevated home on the east end of the island, we know how to identify and seal the leaks that are specific to your construction type and age.
We ask a few basic questions about your home's age, size, and any comfort problems you have noticed. We reply within 1 business day and can usually schedule an initial visit within one to two weeks.
We set up a blower door in your front door and use it to measure exactly how much air your home is leaking. We then walk through with detection tools to find exactly where the leaks are concentrated. This part takes one to two hours and gives you a clear picture of what needs to be done.
We walk you through what we found - the biggest leaks, what sealing them involves, and what it will cost. You decide what work you want done before anything is agreed to. There is no pressure and no obligation at this stage.
We seal gaps with foam, caulk, or rigid materials in attics, crawl spaces, and utility areas. After the work, we run the blower door test again and share the before-and-after numbers in writing so you can see the measurable improvement.
Free estimate with a blower door assessment. We show you the numbers before and after, so you can see exactly what improved.
(645) 300-7168We perform a blower door test both before and after the job, so you receive measurable before-and-after numbers in writing. If a contractor will not do a post-job test, there is no way to verify the work was effective - we always verify.
Salt air degrades standard caulk and foam sealants faster in Key West than inland. We select materials that hold up in a coastal environment so your sealing work does not need to be revisited within a year or two of completion.
Monroe County has strict building codes tied to hurricane risk. We know which air sealing scopes require a permit and which do not, and we pull any required permits so your work is on record and compliant. Building Performance Institute certification is one benchmark for contractor quality in this field.
Keys Energy Services has historically offered rebate programs for energy efficiency work. We walk you through what rebates and federal tax credits may be available for your project before you sign anything - so you capture savings you might otherwise miss.
Every air sealing job we complete in Key West is backed by verified numbers, materials suited to the coastal environment, and a process that respects your home's character. Call us or submit a request and we will reply within 1 business day.
Target the ceiling plane specifically, where leaks from recessed lights, attic hatches, and roof penetrations are often the biggest energy drain.
Learn MoreAdd insulation below the living space to address heat gain from the ground level and complete your home's thermal envelope.
Learn MoreBooking before peak summer means you get the full cooling-season benefit right away - and contractor schedules fill up fast in the Keys.