Eagle Pass Insulation brings commercial insulation, spray foam, attic upgrades, and blown-in services to San Antonio homes and businesses - working across the metro from older South Side neighborhoods to newer Stone Oak subdivisions, with free on-site estimates and no surprise charges.
San Antonio has a large commercial sector - warehouses near the South Side, office buildings in the medical district, and retail centers throughout the metro. Our commercial insulation service is built for buildings where energy costs are high and the building envelope is often large, older, or both. We work with building owners, property managers, and contractors across San Antonio.
San Antonio averages over 100 days above 90 degrees every year, and spray foam is the strongest defense a building envelope has against that kind of sustained heat. Closed-cell spray foam creates an air-impermeable barrier that also adds structural rigidity - which matters in a city where clay soil movement can work gaps open in wall assemblies over time.
The largest share of San Antonio's housing stock was built between 1950 and 1990, and those homes were insulated to standards far below what today's climate requires. Blown-in insulation brings attic depth up quickly and completely, covering every corner of irregular attic spaces that batt material leaves with cold spots or thin patches.
In a city where heat buildup in an attic can push temperatures above 140 degrees on a summer afternoon, a properly insulated attic is not optional - it is the first line of defense for your HVAC system. San Antonio homes on the South Side and in older central neighborhoods often have original attic insulation from decades ago that has settled to a fraction of the depth it started at.
San Antonio's clay soils shift with every rainfall and dry spell, and that movement gradually opens gaps in slab foundations, wall penetrations, and attic floor assemblies. Air sealing closes those pathways before new insulation goes in. Without it, even a freshly upgraded attic loses efficiency through dozens of small gaps lower in the building.
Many San Antonio homeowners - especially in established neighborhoods like Alamo Heights, Terrell Hills, or the older South Side - have never upgraded the insulation installed when their home was built. Retrofit insulation adds material to existing walls, floors, and attics without a full renovation, bringing older homes up to a standard that actually keeps pace with Texas summers.
San Antonio is one of the hottest large cities in the United States, averaging more than 100 days above 90 degrees every year and regularly exceeding 100 degrees from late June through August. That heat is sustained - not a brief spike but weeks of relentless exposure that degrades roofing materials, cracks caulk and sealants, and pushes HVAC systems to their limit. A large portion of the city's residential housing stock was built between 1950 and 1990 under insulation standards that were never adequate for the climate, and original material from that era has settled and thinned further with each passing decade. The result is a city full of homes where the gap between the insulation installed and the insulation needed is large - and where that gap shows up in electric bills every summer.
San Antonio also sits in an area known as Flash Flood Alley, where intense thunderstorms can dump several inches of rain in a matter of hours. Combined with the heavy clay soils that underlie most of the metro - soils that swell when saturated and shrink during dry spells - that moisture cycle creates constant stress on slab foundations, wall assemblies, and the gaps around penetrations. The February 2021 winter storm exposed another vulnerability: a city built for summer heat is not naturally prepared for sustained temperatures below freezing, and building envelopes that seemed adequate in warm weather failed badly when temperatures dropped below zero. Homes that were never designed for that kind of cold need insulation and air sealing upgrades to handle the next event.
Our crew works throughout San Antonio regularly, and we understand the local conditions that affect insulation work here. San Antonio is not one market - it is dozens of distinct neighborhoods, each with its own housing age, construction style, and problem profile. The brick-veneer ranch homes on the South Side that date from the 1960s have different insulation needs than the newer wood-frame stucco homes in Alamo Ranch. Homes in the King William Historic District and Monte Vista present a different set of challenges again, with original wood windows, plaster walls, and preservation rules from the City of San Antonio's Historic and Design Review Commission that govern what can be done to exterior components. Newer subdivisions in Stone Oak and Helotes on the North Side are hitting the 15-to-20-year mark - the window when roofs, HVAC systems, and original insulation all tend to need attention at once.
San Antonio is home to Joint Base San Antonio - which includes Lackland Air Force Base, Fort Sam Houston, and Randolph - and the neighborhoods around each installation have a steady mix of long-term owners and military families who may be newer to the city. We serve properties near each of those bases and understand the range of home types and property ages those communities contain. We also regularly handle commercial insulation for building owners and property managers across the metro, from the medical center corridor to warehouse and light industrial properties on the East and South sides.
Homeowners in communities just west of San Antonio can also find us in Castroville and all the way out to Eagle Pass, so our service area covers the full corridor between San Antonio and the Texas-Mexico border.
Contact us by phone or through the online form. We reply within one business day - usually the same day. San Antonio is a large city, and we are familiar with neighborhoods throughout the metro.
We visit your San Antonio home or building, inspect the attic and any areas you are concerned about, and give you a written estimate at no charge. Cost questions are answered here - the estimate you receive is exactly what you pay.
We schedule your job after estimate approval - most San Antonio installations are booked within the same week. We work efficiently and leave your property clean.
Before we leave, we walk through the completed work with you so you can see what was installed and where. If anything comes up after the job, call us - we stand behind every project.
We serve homes and commercial properties throughout San Antonio. No commitment, no pressure - just a straight answer about what your property needs and what it costs.
(830) 971-8829San Antonio is the second-largest city in Texas and one of the fastest-growing large cities in the country, with a population of about 1.5 million inside city limits and over 2.6 million in the broader metro. The city is home to some of Texas's most recognizable landmarks - including the Alamo and the River Walk along the San Antonio River - as well as a major military presence at Joint Base San Antonio, a large healthcare and bioscience sector, and dozens of distinct neighborhoods ranging from historic preservation districts to sprawling new suburban developments on the North Side. The housing stock is diverse: Victorian and Craftsman homes from the early 1900s in King William and Monte Vista, brick-veneer ranches from the postwar decades throughout the central city, and large newer subdivisions in areas like Stone Oak, Alamo Ranch, and Helotes.
About 55 percent of San Antonio housing units are owner-occupied, which means most of the city is invested in keeping properties in good shape for the long term. The city's growth has brought a mix of longtime residents and newer arrivals - including military families rotating through assignments at Lackland, Fort Sam Houston, and Randolph - who all need reliable local contractors. Many homeowners in western San Antonio are also connected to nearby communities including Castroville in Medina County, where the residential character is different but the climate demands are the same.
Seal every gap and slash energy bills with professional spray foam.
Learn MoreKeep heat out and comfort in with proper attic insulation.
Learn MoreFill hard-to-reach cavities quickly with blown-in material.
Learn MoreWhole-home insulation solutions for year-round comfort and savings.
Learn MoreSafe removal of old, damaged, or contaminated insulation material.
Learn MoreProtect your floors and foundation from moisture and temperature loss.
Learn MoreReduce noise and energy loss through interior and exterior walls.
Learn MoreStop drafts and air leaks before they drive up your bills.
Learn MoreKeep your basement dry, comfortable, and energy-efficient year-round.
Learn MoreHigh-density foam with superior moisture resistance and R-value.
Learn MoreFlexible, sound-dampening foam ideal for interior applications.
Learn MoreCode-compliant insulation solutions for commercial buildings of all sizes.
Learn MoreBlock ground moisture from entering your home through the crawl space.
Learn MoreProfessional vapor barrier installs that protect structure and air quality.
Learn MoreSeal attic bypasses to maximize insulation performance and comfort.
Learn MoreAdd insulation to existing walls and spaces without major renovation.
Learn MoreCall us today or submit a request online - we serve homes and commercial properties throughout San Antonio with free estimates and same-week scheduling.
