San Luis Insulation helps homeowners and businesses stop wasting money on cooling a leaky home. We insulate, seal, and protect - so your AC actually keeps up.
San Luis Insulation is a licensed insulation contractor serving San Luis, AZ and the surrounding region. We work on hot attics, dusty crawl spaces, drafty walls, and everything in between - solving the problems that keep your home uncomfortable and your bills high. We offer 16 insulation and air sealing services, covering 12 cities across Arizona, California, and northern Mexico. If your home is working harder than it should to stay cool, we can tell you exactly why - and fix it.
Paying to cool air that keeps escaping? Spray foam seals every gap and insulates at the same time, so your AC finally keeps up.
Learn More
Your attic hits 150 degrees in summer. Proper insulation is what keeps that heat from turning your bedrooms into ovens.
Learn More
Thin coverage letting desert heat push through? Blown-in material fills every corner evenly without tearing out your walls.
Learn More
Running the AC all day and still sweating? A full home insulation assessment finds exactly where your comfort is escaping.
Learn More
Old, wet, or rodent-damaged insulation actually hurts your home. We remove it cleanly before any new material goes in.
Learn More
An uninsulated crawl space radiates heat upward into your floors. We stop that cycle and make your home more comfortable floor to ceiling.
Learn More
Walls with no insulation turn scorching sun into indoor heat. We add wall insulation without gutting your drywall.
Learn More
Gaps around pipes, fixtures, and framing let outside air in all day. Sealing them keeps your cooled air where it belongs.
Learn MoreYou reach out by phone or form. We ask a few basic questions - home size, what area you want addressed, and what problems you are noticing. No need to know all the answers. Just describe what is bothering you and we take it from there. We respond within 1 business day.
A contractor visits your home, walks through the areas you want insulated, and checks what is already there. They look for thin spots, moisture damage, and air gaps that need sealing. The visit takes 30 to 60 minutes. You get a written estimate before any work is scheduled - no pressure, no obligation.
The crew arrives on the scheduled day and gets to work. Most jobs finish in one day. Before they leave, they walk you through exactly what was done - showing you coverage, answering your questions, and leaving written documentation of everything installed. Your home should feel different by the next afternoon.
We hold a valid Arizona Registrar of Contractors license and carry full insurance on every project. You can verify our license yourself at roc.az.gov in about 30 seconds - and we encourage you to.
We walk your home, assess what is there, and give you a written quote that breaks out labor, materials, and any permit fees. You get the full picture before you spend a dollar - and there is zero pressure to commit on the spot.
We know what Sonoran Desert summers do to homes - because we live and work here too. We serve 12 cities across southern Arizona, the Imperial Valley, and northern Mexico, so you do not wait weeks for someone to drive from Tucson or Phoenix.
We tell you exactly what your home needs - and what it does not. If a targeted fix will do the job, that is what we recommend. We back every job with written documentation and stand behind our work if anything does not perform as expected.
Ready to talk? Call (928) 296-5342 or send us a message.
"Before the spray foam, our back bedroom hit 90 degrees by 2 in the afternoon even with the AC running. After the job, that room finally matches the rest of the house. The crew finished in one day and cleaned up completely before they left."
Rosa M., San Luis, AZ - Spray Foam Insulation
"My electric bill dropped noticeably after the attic insulation upgrade. The estimator walked me through exactly what was in my attic before the job started, and they left depth markers so I could check the coverage myself. No pressure, no surprises on the bill."
Carlos T., Yuma, AZ - Attic Insulation
"We had moisture showing up in the crawl space after every monsoon. After the vapor barrier installation, that problem went away completely. They explained the whole process before starting and gave us paperwork documenting what was installed."
Patricia V., Somerton, AZ - Vapor Barrier Installation
We respond within 1 business day. There is no obligation to move forward after your estimate. Once you submit, someone from our office will call you to schedule a free on-site assessment at a time that works for you.
(928) 296-5342San Luis Insulation is based in San Luis, AZ and serves 12 communities across southern Arizona, the Imperial Valley in California, and San Luis Rio Colorado across the border in Sonora. We cover Yuma, Somerton, Calexico, and surrounding cities, and we can often schedule same-week visits for local jobs.
On a 110-degree afternoon, your attic can reach 150 degrees or higher. That superheated air pushes down through your ceiling all day - and thin insulation barely slows it.
Yes. Moisture from monsoon storms can push into attics and crawl spaces, compressing insulation and creating conditions for mold. Closed-cell foam and vapor barriers address this directly.
Proper insulation combined with air sealing actually reduces dust infiltration by closing the gaps that haboob particles enter through. Fewer gaps mean a cleaner home between storms.
Very likely. Many homes built during San Luis's rapid growth years were insulated to the minimum code of that era. Those minimums have since been updated, and the original material has had 15-plus years to settle and compress.
The Arizona Registrar of Contractors lets you search any contractor by name or license number in about 30 seconds. Always check before signing - it is the most important step you can take.
Spray foam is the stronger choice when moisture is a concern - which it is in spaces exposed to monsoon humidity. Blown-in is an excellent, cost-effective option for attics where the main issue is heat, not moisture.
San Luis Insulation is a licensed, insured insulation contractor company based in San Luis, AZ, serving 12 communities across the Yuma metro area, the Imperial Valley, and northern Mexico since 2025.
We hold a valid contractor license issued through the Arizona Registrar of Contractors - the state authority that licenses and regulates all insulation work in Arizona. You can verify our license status at roc.az.gov.
We offer 16 insulation and air sealing services, serving homeowners and commercial property owners who are dealing with high cooling bills, uneven temperatures, and moisture issues caused by desert heat and monsoon season.
Yes. Many San Luis homes built in the 2000s and early 2010s were insulated to the minimum standard of that era, which was designed for a different energy price environment. A quick assessment tells you exactly where you stand.
Late fall through early spring is ideal - cooler attic temps make the work safer and easier. But we work year-round, and scheduling before peak summer is the best way to protect your home going into the hottest months.
Often yes - as long as the existing material is dry, not moldy, and not heavily compressed. A contractor will inspect what is there first. The U.S. Department of Energy has guidance on when adding versus replacing makes the most sense.
Not sure where to start? The simplest step is a free in-home assessment - call (928) 296-5342 or request one online and we will walk you through your options.
San Luis is one of the fastest-growing cities in Arizona, with a population that has more than doubled in recent years to over 35,000 residents. The city sits directly on the U.S.-Mexico border, just across from San Luis Rio Colorado, Sonora - and the San Luis Port of Entry is one of the busiest land crossings in Arizona. Most households here are young, bilingual families - many of whom own their homes and are invested in keeping them in good shape. Data from the U.S. Census Bureau shows the median age in San Luis is around 22, well below the national average - which means a lot of young families living in homes that were built quickly during the city's growth years.
The housing stock here is mostly newer construction - single-family stucco homes built in the 2000s and 2010s across relatively dense residential grids. Many of those homes were built to minimum code standards at the time, which were not designed for today's energy costs or the intensity of Sonoran Desert summers. San Luis falls under the Yuma County metro area, a region whose economy is built on agriculture - and where working families do not have money to waste on electric bills driven up by poor insulation.
San Luis Insulation works in neighborhoods near the port, near San Luis High School, and out into the newer subdivisions on the north end of town. We understand what the desert climate here demands - the brutal summer heat, the monsoon humidity spikes, and the dust storms that push through every gap they can find. When a San Luis homeowner calls us, we already know the problems they are likely dealing with before we walk through the door.
By appointment only, no walk-ins.
San Luis Insulation
508 Archibald St #3
San Luis, AZ 85349
Always open, 24/7.
Get a free on-site insulation estimate with no obligation. We respond within 1 business day and can often schedule same-week visits for San Luis and nearby areas.
