Crawl Space Vapor Barrier
Seal the ground beneath your Las Cruces home with a vapor barrier that protects against monsoon moisture and prevents humidity from rising into your living space.
Learn moreLoading...
Las Cruces attics reach 140 degrees or more in summer. When your ceiling has unsealed gaps, that heat pushes straight down into your home no matter how hard your AC runs. We seal those gaps so your system can actually keep up.
Attic air sealing in Las Cruces means finding and plugging every gap in your ceiling where conditioned air escapes and superheated attic air pushes in — most homes are completed in a single day, with no need to move out and no disruption to walls or ceilings below.
Attic air sealing is a separate job from adding insulation, though the two work together. Insulation slows the transfer of heat through solid material. Air sealing stops air from moving through the gaps around light fixtures, plumbing penetrations, wiring, and the tops of interior walls — gaps that insulation cannot cover on its own. In Las Cruces, where attic temperatures can exceed 140°F on a summer afternoon, even well-insulated homes can underperform if those gaps were never addressed.
Attic air sealing is the logical companion to whole-home air sealing services, and it is often done alongside crawl space vapor barrier installation to address both ends of the building envelope at once.
If your air conditioner runs for long stretches during a Las Cruces summer but certain rooms never fully cool down, hot attic air leaking through ceiling gaps is a likely cause. The problem is often worst in the early afternoon when attic temperatures peak. Sealing those gaps gives your system a chance to actually reach the temperature you set.
Las Cruces experiences regular dust events, and if you find a thin layer of grit on shelves or countertops even with windows closed, it is often entering through ceiling gaps connected to the attic. The same pathways that let dust in let your cooled air out. This is a local signal that is easy to dismiss as just a desert nuisance rather than a fixable problem with your home.
A moderate increase in summer electricity costs is normal in the desert Southwest, but a dramatic spike compared to similar-sized homes, or compared to the same months in previous years, often points to air leakage making your cooling system work much harder than it should. If your usage habits have not changed but your bill keeps climbing, air sealing is worth evaluating.
Las Cruces homes built before roughly 2005 were constructed under standards that rarely required air sealing in the attic. If yours has never had a professional air sealing job, the gaps around light fixtures, plumbing, and wiring in your ceiling have almost certainly never been addressed. Older homes in neighborhoods near NMSU and on the East Mesa frequently fall into this category.
Our attic air sealing work covers the full ceiling plane — recessed light cans, plumbing and electrical penetrations, top-of-wall bypasses, attic hatches, and any other opening that connects your living space to the attic. We use foam and caulk sealants to address each type of gap, matching the right material to the type of penetration. The work happens above your ceiling so your walls, floors, and furniture are never touched.
Many customers ask whether to do air sealing before or after adding insulation. The answer is always before, if possible — sealing the gaps first and then covering them with insulation gives you the full benefit of both. When we do a full attic upgrade, we seal first and insulate second. If you already have insulation in place, we can work around it. For homes where you want a measurable proof of improvement, we offer blower door testing, which the Building Performance Institute recognizes as the standard method for assessing whole-house air leakage.
Attic air sealing pairs naturally with air sealing services for the rest of the home, including crawl spaces and rim joists. Addressing the whole building envelope at once is more cost-effective than scheduling each area as a separate project. We can assess all areas during a single visit and quote them together or individually based on your priorities.
Best suited for homes where insulation is in place but the ceiling has never had the gaps around light fixtures, plumbing, and wiring addressed.
Best suited for homes where the attic access point is a significant source of air leakage — often one of the largest single gaps in the ceiling plane.
Best suited for homes scheduled for insulation removal and replacement, where sealing is done first to maximize the performance of the new insulation layer.
Best suited for homeowners who want a measurable confirmation that the work was done effectively, not just the contractor's assurance.
Las Cruces sits in the Chihuahuan Desert at an elevation that produces both extreme summer heat and cold desert nights. Attic temperatures in the city can reach 140°F or higher by early afternoon in July, and that heat differential between your attic and your living space is far greater than what homeowners in milder climates deal with. Unsealed ceiling gaps in Las Cruces are not a minor inconvenience — they are one of the primary reasons cooling bills run high and rooms stay uncomfortable. According to the U.S. Department of Energy, sealing air leaks and adding insulation together can cut heating and cooling costs by up to 15 percent — and in a climate as demanding as this one, that number adds up fast over a season.
Las Cruces also experiences spring and early-summer dust events when wind drives fine Chihuahuan Desert particles across the Mesilla Valley. That same dust finds its way into homes through ceiling gaps. Many Las Cruces homeowners who have had attic air sealing done report noticeably less dust accumulation inside the home during high-wind season — a benefit that is easy to overlook when thinking about insulation and energy savings.
We serve the greater Las Cruces area including El Paso, TX, Alamogordo, and Socorro. The same desert climate conditions that make air sealing valuable in Las Cruces apply across the entire region.
When you reach out, we ask about your home's age, any existing insulation, and the problems you have been noticing. We respond within one business day to schedule an in-home assessment — not a phone estimate.
A technician inspects your attic, notes the number and type of penetrations, and assesses how accessible the space is. You receive a written estimate with the scope of work and the price before any commitment is made. A blower door test can be included if you want a baseline measurement.
The crew works in the attic above your ceiling. You do not need to vacate the home. You may notice some noise and brief odor from sealant, which clears quickly. Most Las Cruces homes are fully sealed in a single day.
After the work is complete, we walk you through what was done — sometimes with photos from inside the attic. If a blower door test was run before, we run it again so you have a before-and-after comparison. We provide the documentation you need for any El Paso Electric or New Mexico Gas Company rebate applications.
We provide free in-home assessments and written quotes. Blower door testing available for homeowners who want a measurable before-and-after result.
(575) 222-9399A blower door test gives you a concrete number — air changes per hour — before and after the work, so you are not relying on a contractor's word that the job was effective. Not every insulation company in Las Cruces offers this. We do, and we welcome the accountability that comes with it.
Many Las Cruces homes have flat or low-slope roofs with shallow attic cavities, which require a different approach than a standard pitched attic. We have worked on this type of construction throughout Dona Ana County and know how to assess and seal these spaces correctly. A contractor without this experience will either underprice the job or skip the hard-to-reach gaps.
El Paso Electric and New Mexico Gas Company have both offered rebates for qualifying energy efficiency work, and we provide the documentation you need to submit a claim. Many contractors either do not know the current programs or do not bother to help with the paperwork. We track the current incentive landscape and give you what you need before we leave the job.
We serve homeowners in Las Cruces and more than 11 surrounding communities, including El Paso, Alamogordo, Sunland Park, and Anthony. Local service means we understand the specific housing stock and climate conditions in each area — not just the Las Cruces zip codes.
Attic air sealing is one of the highest-impact improvements a Las Cruces homeowner can make, and it costs less than most people expect. We follow the standards and testing protocols endorsed by the ENERGY STAR program on every job and provide the documentation you need to claim available rebates from your local utility.
Seal the ground beneath your Las Cruces home with a vapor barrier that protects against monsoon moisture and prevents humidity from rising into your living space.
Learn moreWhole-home air sealing for Las Cruces homeowners who want to address every part of the building envelope, not just the attic ceiling plane.
Learn moreLas Cruces attic temperatures top 140 degrees in summer. Get your ceiling sealed before peak heat arrives and start seeing the difference on your next electric bill.