Desert attics hit 150 degrees in July. When your ceiling has gaps, that heat pours straight into your living space. We seal every opening so your AC stops fighting a losing battle - and your bills come down.
Attic air sealing in San Luis means finding and plugging every gap in your ceiling where conditioned air escapes into the attic - or where hot attic air pushes back down into your living space - and most homes are sealed in one full day with no disruption to your daily routine.
Insulation slows heat transfer, but it cannot stop air from flowing through gaps. If your attic has unsealed holes around light fixtures, plumbing pipes, or the tops of interior walls, hot air will pour through those openings regardless of how much insulation sits on top. Sealing those gaps first - then adding insulation - is the order that actually works. In San Luis, where attics regularly hit 150 degrees or higher by midday in July, even a small gap becomes a serious problem. Many homes built during the rapid growth of the 2000s and 2010s were never fully sealed at the attic level during construction, meaning homeowners have been paying for that oversight on every electric bill since they moved in.
Attic air sealing is often paired with retrofit insulation - sealing first, then topping up insulation levels - to get the full benefit in a single visit. If you are also dealing with air leaks throughout the rest of your home, our air sealing services page covers the broader scope.
If your electric bill has crept up year over year without a change in habits or appliances, air leaking into your attic is one of the most common culprits. In San Luis, where APS bills can spike dramatically in summer, a gradual or sudden rise in cooling costs is one of the clearest signs your attic is working against you.
If a bedroom or hallway near the attic access always feels warmer than the rest of the house - even with the AC running - hot attic air is likely finding a way in nearby. San Luis attics can reach extreme temperatures by midday, and even a small gap near a light fixture or ceiling fan box can make a room feel ten degrees warmer than it should.
Desert dust is a fact of life in Yuma County, but if you are finding a thin layer of grit on shelves and furniture within days of cleaning, some of it may be entering through attic gaps rather than doors and windows. Attic insulation also sheds fine particles through unsealed ceiling penetrations - contributing to the dusty feeling many San Luis homeowners accept as normal but do not have to.
Stand near your attic access on a hot afternoon and hold your hand close to the edges. If you feel heat radiating through or around it, that hatch is not sealed - and it is one of the largest single air leak points in most homes. This is a quick, no-tools check any homeowner can do, and a warm attic hatch is a reliable sign a contractor should take a closer look.
Every attic air sealing job starts with a systematic walkthrough of the attic to document every penetration - plumbing stacks, electrical wires, recessed lights, HVAC chases, and the tops of interior walls. Nothing gets skipped because even a small gap can account for a large share of your home air leakage. We apply spray foam or caulk to every opening we find, then seal the attic hatch itself, which is often one of the biggest single gaps in the ceiling and one of the most commonly overlooked.
For homeowners who want the most complete improvement, we pair attic air sealing with retrofit insulation added to the attic floor in the same visit. And for homes where air leaks extend beyond the attic into walls, rim joists, and other pathways, our full air sealing services cover the broader scope. We use a blower door test before and after every job so you have real numbers showing the improvement - not just our word for it.
Spray foam and caulk applied to every gap and penetration in the attic floor - the standard approach for most San Luis homes and the most durable solution available.
Weatherstripping and insulated covers for pull-down stairs and attic hatches - one of the largest and most overlooked air leak points in existing homes.
Airtight covers installed over recessed light fixtures from the attic side - eliminates one of the most common bypass pathways without replacing the fixtures themselves.
Air sealing followed immediately by blown-in insulation - addresses both pathways heat uses to enter your home and gives you the full performance benefit in a single visit.
San Luis sits in the Sonoran Desert along the U.S.-Mexico border and regularly records summer highs above 110 degrees - putting it among the hottest cities in the country. When your attic reaches 150 degrees on a July afternoon, even a small gap in your ceiling becomes a direct pipeline for that heat into your living space. Air conditioning runs eight months or more per year here, which means every dollar saved on cooling compounds across a much longer season than in milder climates. The payback on attic air sealing in San Luis is faster than it would be almost anywhere else in the United States. Homeowners in Somerton and Yuma face the same extreme conditions and benefit from the same work.
Beyond the heat, the Yuma County area experiences frequent dust storms - sometimes called haboobs - that push fine desert dust into every gap and crack in your home. Fine particulate matter that enters through attic gaps settles into insulation and eventually works its way into living spaces through the same pathways that let air through. San Luis also grew rapidly in the 2000s and 2010s, and many homes built during that growth period were never fully sealed at the attic level. If your home was built during that era and has never had an energy assessment, there is a good chance gaps have been costing you money every month without you knowing it. A U.S. Department of Energy guide on air sealing explains where the most common leak points are in residential attics.
Tell us your home size, when it was built, and what problem you are trying to solve - high bills, hot rooms, or both. We reply within one business day and schedule a time to assess the attic before quoting anything. We do not price attic jobs over the phone without seeing your home first.
A technician enters your attic to document every penetration - plumbing, electrical, light fixtures, wall tops, and the attic hatch. Many contractors also run a blower door test at this stage: a large fan mounted in the front door that measures how much air is actually leaking from your home. This takes about an hour and replaces guesswork with real data.
The crew works systematically through the attic, applying foam or caulk to every penetration they find. The work happens entirely above your ceiling - your living space is not disturbed. Depending on attic size and number of penetrations, most jobs are finished in one full day.
A thorough contractor runs a second blower door test after sealing to confirm the leakage has actually dropped. You receive both test results - before and after - so you have documentation of the improvement for your records and for any rebate applications. We walk you through what was done before the crew leaves.
San Luis summers are brutal. We will test your home, show you exactly where the air is escaping, and give you a written quote before you decide anything. No pressure.
(928) 296-5342We hold a current Arizona Registrar of Contractors license for every project we take on in San Luis and the surrounding Yuma County area. You can search our license number on the ROC website before signing anything - it confirms we carry insurance and have met Arizona standards. A contractor who cannot give you a license number is not a contractor you should hire.
San Luis has grown to more than 35,000 people, and we have worked on homes throughout the city - from older neighborhoods near the Port of Entry to newer subdivisions built during the 2000s growth surge. We know the construction patterns here and what those homes were and were not built with.
We run a diagnostic blower door test before and after every air sealing job. That means you get actual numbers showing how much air leakage dropped - not a promise that the work made a difference. In a climate where cooling costs run eight or more months a year, proof matters more than assurances.
Every job gets a written estimate that lists exactly what areas are being sealed, what materials are used, and the total cost. We do not quote attic air sealing over the phone without seeing the attic. No surprises on the day of work, and no pressure to sign before you are ready.
We work in San Luis and throughout Yuma County because we know this area - the housing stock, the climate, and what it actually takes to make a home comfortable at 110 degrees. The ENERGY STAR Seal and Insulate program is the national benchmark we work to, and every job includes before-and-after documentation so you can see the result for yourself.
Pairs directly with attic air sealing - after the gaps are sealed, adding blown-in insulation to the attic floor gives you the full performance benefit and the fastest payback on your cooling bills.
Learn moreWhole-home air sealing that covers not just the attic but also walls, basement rim joists, and other pathways where conditioned air escapes throughout the building.
Learn moreWe serve all of San Luis and Yuma County. Call or request a free estimate today and lock in your date before the hottest weeks fill up our schedule.
