Insulation in San Antonio, TX
Crawl space encapsulation and vapor barrier work in San Antonio is most common under the scattered pier-and-beam homes found in older neighborhoods like Monte Vista, King William, and parts of the near East Side. These homes sit above humid, clay-heavy soil that pushes moisture into floor systems for months at a time. Unlike the city’s dominant slab-on-grade ranch stock, pier-and-beam homes need a different approach, one that accounts for San Antonio’s long hot season and the humidity swings that come with it.
Most insulation work in San Antonio isn’t about staying warm. It’s about keeping heat out of an attic that can hit 150°F by mid-afternoon in July. Call (866) 751-4428 if you want a straight answer about what’s actually going on above your ceiling or below your floors.
Why San Antonio Homes Are Different
San Antonio’s housing stock was built for cheap electricity and hardworking air conditioners, not thermal performance. The tens of thousands of slab-on-grade tract homes that went up across the South Side, West Side, and inner East Side during the 1950s through 1980s military housing booms typically left the factory with R-11 fiberglass or less in the attic. That was fine when power cost pennies. It’s not fine anymore, and in July and August the attic becomes a heat reservoir that radiates into the living space all evening.
The city sits in a hot-humid to semi-arid transition zone, which changes the insulation math. Radiant heat gain through the roof deck is the dominant energy loss mechanism here, not conduction through walls. That means attic air sealing and radiant barrier work deliver more savings per dollar than wall retrofits, a priority order that doesn’t transfer to Houston or Dallas the same way. February 2021 changed things too. Winter Storm Uri exposed how many San Antonio homes were insulated almost exclusively for cooling, leaving pipes and floor systems vulnerable when the temperature finally dropped. Homeowners now ask us to correct that imbalance.
Our Main San Antonio Services
Two services get the most calls from San Antonio homeowners, and for good reason. Both address the city’s real energy loss problem: hot attics that never stop radiating heat into the house.
Attic Insulation in San Antonio
Most San Antonio ranch homes from the postwar era still carry their original attic insulation, and over 40 to 60 years it has settled, separated, and stopped doing its job. Blown-in work on these homes often brings attic R-value up to current code with visible results on the first hot afternoon. We inspect, measure, and give you a number before we touch anything. See the full guide: Attic Insulation in San Antonio.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Crawl Space Encapsulation & Vapor Barrier in San Antonio
For pier-and-beam homes in San Antonio, crawl space encapsulation is the single most effective way to stop humid outside air from entering the home through the floor. San Antonio’s clay soil holds moisture for days after a rain, and that moisture migrates upward into the crawl space, feeding mold, musty smells, and wood rot. A sealed crawl space with a proper Crawl Space Encapsulation & Vapor Barrier turns that damp, dirty zone into a dry, conditioned space that protects the floors above and lowers overall humidity.
Crawl Space Vapor Barrier
Signs you need it
Musty smells in the house, cupping or warping hardwood floors, elevated indoor humidity, or visible standing water under the home after rainfall.
What it costs in San Antonio
Crawl space vapor barrier installation in San Antonio typically runs $2.50-$5.00 per square foot depending on access and moisture conditions.
How we do it
We remove any standing water, level and prep the ground, then install the barrier across the floor and up the piers, sealed at every seam and termination point.
Crawl Space Encapsulation
Signs you need it
Persistent humidity above 60% in the living space, mold on floor joists, cold floors in winter, and odors that keep returning even after repeated cleaning.
What it costs in San Antonio
Full crawl space encapsulation in San Antonio typically costs $7,000-$15,000 depending on square footage, vent sealing, and whether we add a dehumidifier.
How we do it
We seal vents, encapsulate walls and floor with reinforced liner, seal all seams and penetrations, and install a crawl space dehumidifier sized for the space.
Crawl Space Moisture Control
Signs you need it
Condensation on ductwork or pipes under the home, efflorescence on piers, rust on metal supports, and floors that feel clammy even when the AC is running.
What it costs in San Antonio
Crawl space moisture control in San Antonio averages $2,000-$5,500 for targeted grading, drainage, and dehumidification work.
How we do it
We identify the moisture source first, then address it with a mix of drainage, vapor barrier, and dehumidification rather than treating the symptom.
What Crawl Space Encapsulation & Vapor Barrier Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Vapor barrier installation | $2.50-$5.00 per sq ft |
| Full encapsulation (with dehumidifier) | $7,000-$15,000 |
| Moisture control / drainage correction | $2,000-$5,500 |
| Crawl space cleanout and prep | $800-$2,500 |
Does crawl space encapsulation actually reduce humidity in a San Antonio home?
Yes, and in San Antonio it usually drops indoor humidity by 10 to 20 points in pier-and-beam homes. Sealing the crawl space stops moist outdoor air from being pulled into the house by stack effect, which is exactly what the AC then has to work against. Call (866) 751-4428 for an evaluation.
Will encapsulation help with a musty smell in an older San Antonio home?
In most cases, yes. The musty odor comes from damp soil, organic debris, and mold inside the crawl space. Once the space is sealed, dried, and conditioned, the source of the smell is removed rather than covered. Call (866) 751-4428 for a straight answer about your home.
Spray Foam Insulation in San Antonio
Spray foam insulation is the right answer for many San Antonio attics that were never designed to handle 150°F heat. Open-cell foam on the roof deck can cut attic temperatures dramatically by keeping the heat from ever entering the attic. Newer north-side homes in Stone Oak, Helotes, and Cibolo increasingly use unvented spray-foam roof decks, but oversized HVAC equipment often creates humidity problems that owners wrongly blame on the foam itself. Our team works with Spray Foam Insulation that fits the building assembly, not the other way around.
Open-Cell Spray Foam
Signs you need it
Attic temperatures above 130°F, bedrooms that never cool down in the evening, and high AC bills during San Antonio’s extended cooling season.
What it costs in San Antonio
Open-cell spray foam insulation in San Antonio typically runs $1.50-$3.00 per board foot installed.
How we do it
We prep the attic, mask off the access, spray the foam to the specified depth, and trim it back once cured. The foam expands to fill every gap and crack.
Closed-Cell Spray Foam
Signs you need it
High humidity inside the home, structural reinforcement needs, or unvented assemblies where an air and moisture barrier is required by code.
What it costs in San Antonio
Closed-cell spray foam in San Antonio typically costs $3.00-$6.50 per board foot installed.
How we do it
We spray closed-cell foam to the specified thickness, typically 1.5 to 3 inches, depending on the application. It acts as insulation, air barrier, and vapor retarder in one layer.
Rim Joist Spray Foam
Signs you need it
Drafty floors near exterior walls, elevated heating bills in winter, and rodent or insect entry around the rim joist line.
What it costs in San Antonio
Rim joist spray foam in San Antonio generally runs $25-$50 per linear foot depending on access and prep.
How we do it
We clean the rim joist area, spray the foam across the cavity, and ensure it adheres to the framing. This blocks air movement and creates a thermal break.
What Spray Foam Insulation Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Open-cell spray foam | $1.50-$3.00 per board ft |
| Closed-cell spray foam | $3.00-$6.50 per board ft |
| Rim joist spray foam | $25-$50 per linear ft |
| Garage ceiling spray foam | $1,200-$3,500 |
Is spray foam safe in a San Antonio attic that gets extremely hot?
Yes, once cured, spray foam is stable and does not off-gas. The bigger concern in San Antonio is correct installation depth and coverage, not heat exposure. Call (866) 751-4428 for a professional assessment.
Will spray foam make my San Antonio AC system oversized?
It can if the AC was sized for a vented attic and we seal the attic, but that’s an HVAC sizing issue, not an insulation problem. We always recommend re-evaluating equipment after making the building envelope tighter. Call (866) 751-4428 for guidance.
Blown-In Insulation in San Antonio
Blown-in insulation is the fastest, most cost-effective improvement for the hundreds of thousands of San Antonio homes with under-insulated attics. Most older ranch homes in San Antonio were built with R-11 or less, and decades of settling have left those attics with effective values closer to R-5 or R-6. Blowing new material over the entire attic floor brings the home up to current standards in a single day. Our Blown-In Insulation crews work with GreenFiber cellulose and Johns Manville fiberglass, matched to the home’s existing conditions.
Blown-In Cellulose
Signs you need it
Rooms that heat up unevenly, high summer cooling bills, and attics where insulation is visibly low or compressed below the top of the joists.
What it costs in San Antonio
Blown-in cellulose insulation in San Antonio typically runs $1.50-$3.00 per square foot installed.
How we do it
We run a hose into the attic, blow the cellulose to the specified depth, and level it across the attic floor. The material settles slightly, so we account for settlement in the depth calculation.
Blown-In Fiberglass
Signs you need it
Older attics with original fiberglass batts that have been moved around during HVAC work, leaving gaps and bare spots.
What it costs in San Antonio
Blown-in fiberglass insulation in San Antonio typically costs $1.50-$3.00 per square foot installed.
How we do it
We blow the fiberglass over the entire attic floor to the specified depth, ensuring even coverage and correct R-value. The loose-fill material fills gaps that batts miss.
Blown-In Top-Up
Signs you need it
An attic with some insulation present but clearly below recommended depth for San Antonio’s climate, usually less than 8 to 10 inches.
What it costs in San Antonio
Blown-in top-up insulation in San Antonio usually runs $1.00-$2.00 per square foot depending on depth and access.
How we do it
We blow new material over the existing layer, bringing total depth up to the level needed for San Antonio’s heat. This is often the single best-bang-for-the-buck upgrade in slab-on-grade homes.
What Blown-In Insulation Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Blown-in cellulose | $1.50-$3.00 per sq ft |
| Blown-in fiberglass | $1.50-$3.00 per sq ft |
| Top-up over existing insulation | $1.00-$2.00 per sq ft |
| Dense-pack wall insulation (blown-in) | $3.50-$6.00 per sq ft |
How much blown-in insulation does a San Antonio attic need?
For San Antonio’s climate, we recommend R-38 to R-49 in the attic, which works out to roughly 12 to 16 inches of blown material. Many older homes sit at R-11 or less. Call (866) 751-4428 for a free attic assessment and exact quote.
Can blown-in insulation be installed over old fiberglass batts in San Antonio?
Yes, in most cases, blowing new material directly over settled batts is perfectly fine and will bring the attic up to target R-value. We’ll inspect the existing insulation first to rule out moisture or pest issues. Call (866) 751-4428 for a quick evaluation.
Radiant Barrier Installation in San Antonio
Radiant barrier installation is one of the highest-impact upgrades for a San Antonio home because the city’s primary energy loss is radiant heat through the roof deck, not conductive heat through walls. With over 220 days above 90°F and attic temperatures routinely reaching 150 to 160°F, a radiant barrier can cut the heat load entering your attic significantly. The payback in San Antonio is faster than almost any other city in Texas. Our Radiant Barrier Installation work focuses on the roof deck and attic floor in older slab ranches that were never designed with heat reflection in mind.
Attic Radiant Barrier
Signs you need it
A bedroom over the garage that never cools down, an attic that feels like an oven at 10 a.m., and AC runtimes that start climbing in May.
What it costs in San Antonio
Attic radiant barrier installation in San Antonio typically runs $1,500-$3,500 for a standard single-story ranch home.
How we do it
We staple the reinforced foil barrier to the underside of the roof rafters, creating a reflective surface that bounces radiant heat back out before it ever enters the attic.
Radiant Barrier Foil
Signs you need it
High attic temperatures even with adequate insulation depth, and rooms that stay warm well after sunset as the attic continues to radiate stored heat.
What it costs in San Antonio
Radiant barrier foil in San Antonio generally costs $1,200-$3,000 depending on attic size and rafter configuration.
How we do it
We install a double-sided reflective foil that reflects heat upward while allowing dust to settle without degrading performance. It’s a mechanical install, not a coating.
Radiant Barrier & Ventilation
Signs you need it
Stuffy upper rooms, moisture on attic surfaces, and high cooling costs despite adding insulation without addressing the heat source.
What it costs in San Antonio
Radiant barrier with ventilation upgrades in San Antonio typically runs $2,500-$5,500 for full attic coverage.
How we do it
We install the radiant barrier and evaluate attic ventilation, adding vents or adjusting airflow so the attic stays as cool as possible. The two systems work together.
What Radiant Barrier Installation Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Attic radiant barrier (standard ranch) | $1,500-$3,500 |
| Radiant barrier foil | $1,200-$3,000 |
| Radiant barrier with ventilation upgrade | $2,500-$5,500 |
| Garage ceiling radiant barrier | $800-$1,800 |
Does radiant barrier really work in San Antonio’s climate?
Yes, and San Antonio is one of the best markets in the country for radiant barrier results. Attic temperatures can drop 20 to 30 degrees, which directly reduces the heat entering your living space. Call (866) 751-4428 for a straight assessment of your attic.
Can I install radiant barrier myself in San Antonio?
You can, but it’s hard work in a hot attic and incorrect installation sharply reduces performance. Stapling foil to the roof deck in a 140-degree attic is dangerous work. Call (866) 751-4428 for professional installation that gets done right.
Insulation Removal & Replacement in San Antonio
Insulation removal and replacement in San Antonio is most often needed after rodent activity, roof leaks, or decades of degradation that have left old fiberglass batts compressed and useless. Many older San Antonio ranch homes have insulation that hasn’t been touched since the house was built, and it’s often holding moisture, dust, and pest droppings. Pulling it out and starting fresh gives us a clean surface for air sealing and new material. Our Insulation Removal & Replacement process is thorough and leaves the attic ready for what comes next.
Attic Insulation Removal
Signs you need it
Visible mold or mildew on insulation, rodent droppings, a persistent musty odor, or insulation that’s been soaked by a roof leak and compressed.
What it costs in San Antonio
Attic insulation removal in San Antonio typically runs $2,000-$5,000 for a standard ranch home attic.
How we do it
We remove the old material with a commercial vacuum system, bag it, and clean the attic floor. No debris is left behind for the next material to sit on.
Contaminated Insulation Removal
Signs you need it
Droppings, nesting debris, urine stains, or confirmed rodent activity in the attic. Contaminated insulation is not safe to leave in place.
What it costs in San Antonio
Contaminated insulation removal in San Antonio typically runs $2,500-$6,000 depending on the extent of the contamination.
How we do it
We treat the contaminated material as hazardous waste, remove it fully, sanitize the attic, and prepare the space for new insulation.
Insulation Replacement
Signs you need it
Old, settled insulation that no longer provides meaningful R-value, or insulation that was disturbed during HVAC or plumbing work.
What it costs in San Antonio
Full insulation replacement in San Antonio typically runs $3,000-$8,000 including removal and new blown-in material.
How we do it
We remove the old material, air seal the attic floor, and blow in new insulation to the recommended R-value for San Antonio’s climate.
What Insulation Removal & Replacement Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Attic insulation removal | $2,000-$5,000 |
| Contaminated insulation removal | $2,500-$6,000 |
| Full replacement with new blown-in material | $3,000-$8,000 |
| Vermiculite or old loose-fill removal | $3,000-$7,000 |
Is it safe to leave old insulation in a San Antonio attic?
If it’s dry, uncontaminated, and providing some R-value, it’s fine to leave it and blow new material over it. If it’s wet, moldy, or rodent-contaminated, it should come out. Call (866) 751-4428 for a professional evaluation.
How long does insulation removal take in a San Antonio home?
Most attic insulation removal jobs in San Antonio are completed in a single day, including cleanup and prep for new insulation. Larger or heavily contaminated attics may take two days. Call (866) 751-4428 for a timeline on your home.
Attic Air Sealing in San Antonio
Attic air sealing in San Antonio matters more than wall insulation because the stack effect in a hot climate pulls conditioned air out through every penetration in the ceiling. Every can light, duct boot, top plate, and attic hatch is a leak point that lets cold air escape and hot air get pulled in. Sealing these gaps before adding insulation changes the performance of the entire home. Our Attic Air Sealing work is done before insulation goes down, and it’s one of the highest-ROI upgrades you can make in a San Antonio ranch home.
Attic Floor Air Sealing
Signs you need it
Dusty ceilings, rooms that heat up fast, high cooling bills, and noticeable drafts around ceiling penetrations.
What it costs in San Antonio
Attic floor air sealing in San Antonio typically runs $1,000-$3,000 depending on attic size and number of penetrations.
How we do it
We locate every penetration in the attic floor and seal it with foam, caulk, and gaskets. This stops the stack effect from pulling conditioned air out of the house.
Top Plate & Penetration Sealing
Signs you need it
Visible gaps around plumbing vents, electrical wires, and top plates, often found in older San Antonio homes built before modern air sealing practices.
What it costs in San Antonio
Top plate and penetration sealing in San Antonio generally runs $800-$2,500 for a standard ranch home.
How we do it
We seal every top plate and penetration in the attic with expanding foam or caulk, closing off the direct air paths between the living space and the attic.
Can Light & Duct Boot Sealing
Signs you need it
Recessed can lights that leak air, visible gaps around duct boots, and dust accumulating around ceiling fixtures.
What it costs in San Antonio
Can light and duct boot sealing in San Antonio typically runs $600-$1,800 depending on how many fixtures need attention.
How we do it
We seal around every can light and duct boot, using rated covers for non-IC-rated fixtures. This closes some of the biggest air leaks in the house.
What Attic Air Sealing Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Attic floor air sealing | $1,000-$3,000 |
| Top plate and penetration sealing | $800-$2,500 |
| Can light and duct boot sealing | $600-$1,800 |
| Attic hatch sealing and gasket | $250-$700 |
Does air sealing in San Antonio attics really lower the electric bill?
Yes, in San Antonio it’s common to see a 10 to 20 percent cooling cost reduction after a proper air sealing job. The AC no longer has to fight air being pulled through the ceiling. Call (866) 751-4428 for a realistic estimate on your home.
Can I air seal my attic myself in San Antonio?
You can seal simple penetrations, but a thorough job requires crawling the entire attic and working in extreme heat. Sealing the wrong fixture incorrectly can create fire hazards. Call (866) 751-4428 for professional air sealing done right.
Wall Insulation in San Antonio
Wall insulation in San Antonio takes on a different meaning than in colder cities. The goal here isn’t keeping the cold out, it’s slowing the inward movement of heat through exterior walls and preventing moist air from condensing inside wall assemblies. Older masonry homes in Monte Vista and King William often have empty wall cavities where builders assumed thermal mass would do the work. It doesn’t, not in a city with San Antonio’s cooling load. Our Wall Insulation work targets existing walls without tearing them open, using injection foam and drill-and-fill methods that preserve the home’s appearance.
Injection Foam Wall Insulation
Signs you need it
Warm interior walls on hot days, rooms that gain heat from the western exposure, and high cooling costs in older masonry homes.
What it costs in San Antonio
Injection foam wall insulation in San Antonio typically runs $3.50-$6.00 per square foot of wall area.
How we do it
We drill small holes through the wall surface and inject foam into the cavity, filling it completely without opening the wall. The holes are patched, leaving no visible change.
Drill & Fill Wall Insulation
Signs you need it
Empty wall cavities in older homes, drafts around outlets and baseboards, and rooms that never maintain a steady temperature.
What it costs in San Antonio
Drill and fill wall insulation in San Antonio generally runs $3.00-$5.50 per square foot of wall area.
How we do it
We drill access holes into the wall and blow dense-pack material into the cavity, filling every gap. The holes are patched and the wall is ready for paint.
Interior Wall Soundproofing
Signs you need it
Noise transferring between rooms, especially in newer tract homes with uninsulated interior walls and hollow doorways.
What it costs in San Antonio
Interior wall soundproofing in San Antonio typically runs $3.00-$6.00 per square foot of wall area.
How we do it
We fill interior walls with dense-pack material that absorbs sound, or apply a sound-damping barrier where the wall layout requires it.
What Wall Insulation Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Injection foam wall insulation | $3.50-$6.00 per sq ft |
| Drill and fill wall insulation | $3.00-$5.50 per sq ft |
| Exterior wall insulation | $3.50-$6.50 per sq ft |
| Interior wall soundproofing | $3.00-$6.00 per sq ft |
Why do older San Antonio masonry homes have empty wall cavities?
Builders in the early 20th century assumed thick limestone and brick walls provided enough thermal mass to regulate temperature. In San Antonio’s cooling-dominated climate, that doesn’t work. Call (866) 751-4428 to check whether your walls are empty.
Can wall insulation cause moisture problems in San Antonio?
It can if installed incorrectly in a climate with San Antonio’s humidity swings. That’s why we assess the wall assembly first and choose vapor-permeable materials where needed. Call (866) 751-4428 for a proper evaluation.
Attic Cleaning & Rodent Proofing in San Antonio
Attic cleaning and rodent proofing in San Antonio deals with a problem that’s common in older neighborhoods with mature trees and older roof lines. Squirrels and roof rats find their way in through roofline gaps, then nest in the insulation and contaminate it. The problem doesn’t go away until every entry point is sealed and the attic is cleaned. Our Attic Cleaning & Rodent Proofing work combines removal, cleaning, and exclusion so the animals don’t come back.
Attic Cleanout
Signs you need it
Pest droppings, old nesting material, debris from roof work, and years of accumulated dust and dirt.
What it costs in San Antonio
Attic cleanout in San Antonio typically runs $800-$2,500 for a standard ranch home attic.
How we do it
We remove all debris, vacuum the attic surfaces, and leave the space clean and ready for insulation or air sealing work.
Rodent Proofing & Exclusion
Signs you need it
Noises in the ceiling, chewed wiring, droppings, and any visible gaps at the roofline or around utility penetrations.
What it costs in San Antonio
Rodent proofing and exclusion in San Antonio generally runs $1,500-$4,000 depending on the number of entry points and roof configuration.
How we do it
We locate every entry point, seal it with exclusion materials, and install one-way doors where appropriate so animals leave but can’t return.
Attic Restoration
Signs you need it
An attic that has been left contaminated after pest removal, or one that’s been neglected for years and needs full treatment.
What it costs in San Antonio
Attic restoration in San Antonio typically runs $3,000-$7,000 including cleaning, sanitizing, and insulation replacement.
How we do it
We remove the contaminated insulation, sanitize and deodorize the attic, seal entry points, and install fresh insulation. The attic is left clean, dry, and pest-free.
What Attic Cleaning & Rodent Proofing Costs in San Antonio
| Item | Typical range in San Antonio |
|---|---|
| Attic cleanout | $800-$2,500 |
| Rodent proofing and exclusion | $1,500-$4,000 |
| Attic sanitizing and decontamination | $1,200-$3,000 |
| Full attic restoration with new insulation | $3,000-$7,000 |
What kind of rodents get into San Antonio attics?
Roof rats and squirrels are the most common attic invaders in San Antonio, especially in older neighborhoods with large trees close to the roofline. Both species chew wiring and contaminate insulation. Call (866) 751-4428 for exclusion work that keeps them out for good.
Does cleaning the attic in San Antonio remove the rodent smell?
Removing contaminated insulation, sanitizing surfaces, and sealing entry points removes the source of the odor, not just the smell. A clean attic with fresh insulation shouldn’t smell. Call (866) 751-4428 for an attic assessment.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Home Energy Audit in San Antonio
Home energy audits in San Antonio identify exactly where your house is leaking air and losing cooling before you spend money on insulation. With the city’s long cooling season and high attic temperatures, most San Antonio homes have a predictable set of problems: leaky attics, leaky ducts, and oversized equipment. An audit gives you the numbers. Our Home Energy Audit combines blower door testing, thermal imaging, and hands-on inspection to show you what’s actually wrong, not what someone wants to sell you.
Blower Door Test
Signs you need it
High cooling bills that don’t respond to thermostat changes, drafts, and rooms that never reach the set temperature.
What it costs in San Antonio
A blower door test in San Antonio typically runs $150-$350 as part of a full energy audit.
How we do it
We mount a calibrated fan in an exterior door frame and depressurize the house, measuring exactly how much air leaks in through every gap and penetration.
Thermal Imaging Inspection
Signs you need it
Rooms that stay hot, visible temperature differences between walls, and suspected missing insulation in hard-to-see cavities.
What it costs in San Antonio
Thermal imaging inspection in San Antonio generally runs $150-$400 depending on home size.
How we do it
We scan walls, ceilings, and floors with an infrared camera to locate missing insulation, air leaks, and thermal bridging. The images show exactly where the problems are.
Pricing for Insulation in San Antonio, TX
| Service | Typical range in San Antonio |
|---|---|
| Vapor barrier installation | $2.50-$5.00 per sq ft |
| Full encapsulation (with dehumidifier) | $7,000-$15,000 |
| Open-cell spray foam | $1.50-$3.00 per board ft |
| Closed-cell spray foam | $3.00-$6.50 per board ft |
| Blown-in cellulose | $1.50-$3.00 per sq ft |
| Attic radiant barrier (standard ranch) | $1,500-$3,500 |
| Attic insulation removal | $2,000-$5,000 |
| Attic floor air sealing | $1,000-$3,000 |
In San Antonio, price is driven by attic access, how much depth is needed to reach current targets, whether old or contaminated material has to come out first, and the size of the crawl space or attic. We measure the job in person and give a written price before any work starts.
FAQs About Insulation in San Antonio, TX
How fast can you schedule a job in San Antonio?
We typically schedule an in-home visit within a few business days, and most attic insulation jobs in San Antonio are finished in a single day. Larger projects like full crawl space encapsulation get a clear timeline before any work starts.
Do I need a permit for insulation work in San Antonio?
Most attic and crawl space insulation upgrades in San Antonio don’t require a separate permit. Many homes across the South Side and West Side were originally built with very thin attic insulation, and when we upgrade a home we bring it up toward today’s standards.
How does the written estimate work?
We inspect the attic or crawl space in person, measure the square footage, and check access before writing a number. That price is given to you in writing before any work starts on your San Antonio home.
Do you serve areas near San Antonio?
Yes, we work throughout the surrounding communities in addition to San Antonio. If your address is just outside city limits, give us a call and we’ll confirm we can schedule a visit before setting a date.
What happens to the old insulation you remove?
We bag and haul away old insulation as part of the job, which in San Antonio often means thin original attic fiberglass that’s been baking in the heat summer after summer. We dispose of it properly before installing new material.
Frequently Asked Questions
What happens when you call
- 1A real person answersNo phone trees - talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 30-60 min.
- 4You approve before work beginsNothing starts until you say go.
What San Antonio Customers Say
"Spray foam in the garage ceiling under the bonus room. That room used to be unusable in summer. Walt talked me out of foaming the whole attic because it did not need it - saved me a couple thousand and I trust him more for it."
- Bud Larkin"Crawl space was wet every spring. They laid the heavy liner, sealed the vents, and put a dehumidifier down there. Floors are warm and the moisture meter he left reads fine now. He still answers when I text him a reading."
- Devon Pierce"The house had rats in the attic insulation and a smell we could not place. Walt's crew pulled all of it, sealed the gaps where they were getting in, sanitized, and put in new blown-in. He sent photos of the sealed openings so I could see it done."
- Rosa Delgado