Serving San Antonio, TX
Spray Foam Insulation in San Antonio, TX
San Antonio summers push temperatures above 100°F for weeks at a time. Spray foam insulation creates a complete air barrier that keeps heat outside and your AC running less — cutting energy bills while making every room in your home consistently comfortable.
Spray Foam Services in San Antonio
From attic encapsulations in Stone Oak to commercial warehouse insulation along Loop 410, we handle every part of the building envelope with open-cell and closed-cell spray foam.
Attic Insulation
Air-seal and insulate your attic with spray foam to cut heat transfer and lower cooling bills through Texas summers.
Crawl Space Insulation
Encapsulate and insulate crawl spaces to block moisture, humidity, and pests while improving floor comfort.
Wall Insulation
Fill wall cavities with spray foam for a continuous air barrier that fiberglass batts can't match.
Closed-Cell Spray Foam
High R-value, moisture-resistant closed-cell foam for roofs, rim joists, and areas that need added structural rigidity.
Commercial & Metal Building Insulation
Insulate warehouses, metal buildings, and commercial properties to control temperature and reduce energy costs.
New Construction Insulation
Work with builders to spec and install spray foam insulation during the framing stage for a tighter building envelope.
Why San Antonio Homeowners Choose Us
Bexar County Specialists
We know San Antonio's neighborhoods, climate, and construction styles — from historic homes near the River Walk to new builds in Stone Oak and Timberwood Park.
Energy Savings in SA Heat
Attic spray foam routinely cuts cooling costs 20–40% in San Antonio's extreme summers. We explain expected savings before any work starts.
Licensed & Insured Crews
Fully licensed and insured, protecting your property on every job with no shortcuts.
Free On-Site Estimates
We visit your property, assess every problem area, and provide a detailed written quote with no pressure to commit.
Historic Home Experience
Comfortable working in older San Antonio neighborhoods where access is limited and original materials require care.
Fast Scheduling
Most estimates are scheduled within 48 hours and residential jobs are completed in a single day with minimal disruption.
How It Works
Request Your Free Estimate
Tell us about your home or building and we'll schedule an in-person visit to evaluate the space.
Get a Clear, Written Quote
We measure the space and walk you through open-cell vs. closed-cell options with straightforward, no-pressure pricing.
Professional Installation
Our crew protects your property, installs the foam to the correct depth and spec, and verifies coverage before wrapping up.
Walkthrough & Year-Round Comfort
We confirm the finished work with you, leave the site clean, and you start enjoying lower energy bills right away.
Areas We Serve Near San Antonio
Proudly serving San Antonio and communities throughout Bexar County — from the Hill Country suburbs to the southern I-37 corridor.
- Alamo Heights
- Stone Oak
- The Dominion
- Helotes
- Boerne
- Schertz
- Cibolo
- New Braunfels
- Converse
- Universal City
- Leon Valley
- Live Oak
- Selma
- Garden Ridge
- Seguin
- Windcrest
- Kirby
- Bulverde
- Spring Branch
- Timberwood Park
- Fair Oaks Ranch
- Floresville
- San Marcos
- Pleasanton
Spray Foam FAQs for San Antonio Homeowners
How much does spray foam insulation cost?+
Cost depends on square footage, foam type (open-cell vs. closed-cell), and the areas being insulated. We provide a free, no-obligation on-site estimate before any work begins.
Does spray foam actually lower cooling bills in Texas heat?+
Yes. Because spray foam seals air leaks in addition to insulating, homes typically see a noticeable drop in cooling costs compared to fiberglass batts, especially during peak summer months.
What's the difference between open-cell and closed-cell foam?+
Open-cell foam is lighter and more affordable, ideal for interior walls and attics. Closed-cell foam is denser, has a higher R-value per inch, and adds moisture resistance — better suited for roofs, rim joists, and crawl spaces.
How long does installation take?+
Most residential attic or crawl space jobs are completed in a single day. Larger homes or commercial projects may take longer; we'll give you a timeline with your estimate.
Is spray foam safe for my home and family?+
Yes, once fully cured. We follow manufacturer-recommended re-entry times and ventilate the work area during and after installation.
Can spray foam help with San Antonio's humidity and moisture issues?+
Yes. Closed-cell spray foam adds a moisture barrier in crawl spaces, rim joists, and exterior walls — reducing the humidity infiltration that is common throughout Bexar County and the surrounding Hill Country area.
Do you insulate older homes in established San Antonio neighborhoods?+
Absolutely. We work regularly in neighborhoods like Alamo Heights, Mahncke Park, and King William where homes were built with little to no insulation. We assess access points and choose open-cell or closed-cell foam accordingly.
How much can spray foam lower my electricity bill in San Antonio?+
Results vary by home size and current insulation condition, but San Antonio homeowners typically see a 20–40% reduction in cooling costs after a full attic spray foam install. Your free estimate will include a realistic savings breakdown.
Do you serve communities outside the San Antonio city limits?+
Yes. We serve all of Bexar County and the surrounding region including Boerne, New Braunfels, Schertz, Cibolo, Bulverde, Fair Oaks Ranch, and communities along the 1604 and 281 corridors.
What type of spray foam works best for a San Antonio attic?+
For most San Antonio attics, open-cell spray foam applied to the underside of the roof deck is the best value — it seals air completely and keeps conditioned air inside the thermal envelope. Closed-cell foam is recommended where moisture resistance is needed, such as in crawl spaces or under roof decks with potential leak exposure.
Get Your Free San Antonio Estimate
Ready to cut your cooling bills and keep your San Antonio home comfortable year-round? Call or email SprayFoamInsulationTexas today for a free, no-obligation on-site estimate anywhere in Bexar County.