
Insulation alone cannot stop air from moving through gaps in your ceiling. Attic air sealing closes those openings so your heating and cooling dollars stay inside your home.

Attic air sealing in Reno means closing every gap, crack, and hole where your living space connects to the attic above, using foam and caulk applied from inside the attic floor. Most single-story homes in Reno are completed in one visit, and there is no curing wait, so you can use your home normally as soon as the crew leaves.
Many Reno homeowners assume that adding more insulation is enough, but insulation slows heat transfer without stopping air from moving through gaps. Think of insulation as a sweater and air sealing as a windbreaker: you need both to stay warm when it is cold and windy outside. The U.S. Department of Energy identifies the attic as the single largest opportunity for air sealing in most homes, and in Reno, where the temperature swing from winter to summer exceeds 100 degrees, the payback on this work is faster than in milder climates.
Attic air sealing is often the first step before a broader whole-home air sealing project, and it is frequently paired with attic insulation upgrades in the same visit. Combining both services in one appointment lowers labor costs and can qualify for higher NV Energy rebate amounts than either service alone.
If your NV Energy bill climbs sharply when Reno hits its summer highs or its cold winter nights, and your neighbors in similar-sized homes are paying noticeably less, air leakage through the attic is one of the most common culprits. Your heating and cooling system is working overtime to replace conditioned air that is escaping straight up through your ceiling.
Put your hand on the door or panel that leads to your attic. If it feels noticeably warm in summer or cold in winter, it is acting as a direct conduit between your living space and the attic. This is one of the most common and most overlooked air leak points in Reno homes, and it is a check you can do in thirty seconds.
Hold your hand near a recessed light fixture on a cold Reno winter night. If you feel cool air moving downward, that fixture is not sealed and is pulling cold attic air directly into your room. Recessed lights that poke through the ceiling into the attic are one of the biggest single sources of air leakage in older homes throughout the Truckee Meadows.
Stand in a room and notice whether the air near the ceiling feels significantly warmer in summer or colder in winter than the air at waist height. That temperature layering is a sign that unconditioned attic air is mixing with your living space. In Reno, where attic temperatures can climb dramatically on a hot summer day, that mixing has a real impact on comfort.
Reno Insulation performs attic air sealing by working systematically across the attic floor, sealing every penetration a technician finds. Common targets include the tops of interior walls, gaps around plumbing stacks and electrical wires, recessed light fixtures that penetrate the ceiling drywall, and the attic hatch itself. These locations account for the majority of uncontrolled air movement in most Reno homes built before 1990, and closing them consistently produces the most measurable improvement in comfort and energy bills.
The work is done from inside the attic, so your living space is not disrupted. Foam and caulk are applied depending on the gap size and location, and a good crew will measure depth at multiple points to confirm thorough coverage before the job is called complete. We use a blower door test before the work begins and again after, giving you a before-and-after number that shows exactly how much tighter your home has become.
Attic air sealing pairs naturally with crawl space vapor barrier installation to address both ends of the building envelope in a single project, and with full whole-home air sealing to extend the work to rim joists and other penetrations throughout the structure.
Best for homes built before 1990 where the tops of interior walls were never sealed, one of the most common large leaks in older Reno construction.
Best for homes with older can lights that penetrate the ceiling drywall, creating direct air pathways between the living space and the attic.
Best for any home where pipes, wires, or HVAC ducts pass through the attic floor without a proper air barrier around them.
Best for homes where the pull-down or scuttle hatch to the attic is uninsulated and unsealed, a high-priority quick win for reducing heat loss.
Reno sits at roughly 4,500 feet in the high desert, which means summer highs regularly push past 100 degrees Fahrenheit and winter nights can drop well below freezing. That is an unusually wide range for a single climate, and it means your attic is fighting heat gain in summer and heat loss in winter at significant intensity. Air sealing pays off in both directions here, which is why the return on investment in Reno tends to be higher than in milder climates. The U.S. Department of Energy estimates that sealing air leaks throughout a home can cut heating and cooling costs meaningfully, with the attic being the single highest-impact location in most houses.
Many Reno neighborhoods, particularly in Midtown, the University area, and established subdivisions built in the 1960s through 1980s, have homes that were constructed before tight building practices became standard. These homes often have significant gaps at the tops of interior walls, around old plumbing stacks, and at ceiling fixtures that were never sealed. Reno's dry climate can also mask these problems: in humid climates, air leaks often announce themselves through moisture staining, but in Reno's dry air, homeowners often do not realize how much conditioned air is escaping until they see it on their utility bill.
We serve homeowners throughout the region, including Sparks, Carson City, and Fernley. Wherever you are in the Truckee Meadows area, if your home was built before 1990, there is a good chance the attic has never had a proper air seal.
Reach out by phone or the contact form and we will get back to you within one business day to schedule a free on-site assessment. Fall is the busiest time for this work in Reno, so earlier requests mean more flexible scheduling options.
A technician visits to inspect your attic and run a blower door test. This 30-to-60-minute visit gives you a clear picture of how leaky your home is before any work is agreed to, and a written price before anyone starts.
The crew works from inside the attic using foam and caulk to seal every gap they find. The work is dusty in the attic but should not disturb your living space. A good crew lays drop cloths and cleans up before leaving.
A second blower door test after the work shows the measurable improvement. You receive written documentation of what was sealed, which is required for NV Energy rebate claims and useful for any future home sale or insurance filing.
Free estimate and blower door baseline included. No commitment until you have seen a written quote.
(775) 491-3183We measure your home before the work and again after, so you have a real number showing what the job accomplished. That before-and-after data is also exactly what NV Energy requires to process a rebate claim, and what federal tax credit filings ask for. You are not left trusting that something happened in your attic. See ENERGY STAR Seal and Insulate program.
Nevada requires contractors performing insulation work to hold a state-issued license. You can verify our license through the Nevada State Contractors Board website in about two minutes, and we encourage you to do so before calling anyone. A licensed contractor gives you formal recourse if anything falls short of what was agreed.
Reno Insulation works throughout the Reno-Sparks metro and into communities like Carson City, Fernley, and South Lake Tahoe. That range means we understand the housing stock across this region and the seasonal patterns that affect when homeowners feel the impact of air leakage most acutely.
A large share of our Reno jobs are in homes built in the 1960s through 1980s, where attic air sealing was never done. We know where to look in those houses and what materials work best for the gaps that are most common in older Reno construction. Experience with older homes means fewer surprises and a more thorough result.
Measurable results and documented work are what separate attic air sealing that actually changes your energy bill from a job you cannot evaluate. Reno Insulation brings blower door testing, licensed crews, and direct experience with the older housing stock throughout the Truckee Meadows to every project we take on.
Sealing the attic above and the crawl space below in the same project closes both ends of the building envelope for the greatest measurable improvement.
Learn moreWhole-home air sealing extends the attic-specific work to rim joists, walls, and other penetrations throughout the building envelope.
Learn moreFall scheduling fills quickly in Reno. Call now or submit a request to lock in your appointment, and we will have your attic sealed before the cold arrives.