Jaime AlfaroManaging energy bills during those brutal South Texas summers can feel like a real struggle. If you’re a homeowner trying to lower cooling costs or a manager planning a new build, proper thermal barriers are essential for comfort.
It takes some careful planning to choose the right materials for your specific needs. Upgrading your insulation often goes hand in hand with other major steps, such as hiring renovation contractors to update older rooms.
To help you save money and avoid stress, I created this guide to the best insulation services in San Antonio.
How much does insulation cost in San Antonio?
Professional insulation services in San Antonio generally cost between $1.00 and $4.50 per square foot, depending on the specific materials used.
| Insulation Type | Average Cost |
| Attic Insulation (Fiberglass/Blown-in) | $1.50–$2.45 per sq. ft. |
| Spray Foam Insulation | $3.00–$7.00 per sq. ft. |
| Radiant Barrier | $1.00–$2.00 per sq. ft. |
| Removal of Old Insulation | $0.75–$2.25 per sq. ft. |
1. Texas Pro Insulators
Website: https://texasproinsulators.com/
Address: 401 E Sonterra Blvd, Suite 375
Contact: (210) 263-1103
Hours: Monday-Friday: 9:00 AM – 5:00 PM
Upgrading an older home involves much more than just putting fiberglass in the ceiling. Texas Pro Insulators uses a smart approach called the Perfect Attic System. This method combines radiant barriers with air sealing to keep your home comfortable.
I actually saw their work firsthand during a free energy check at my cousin’s house last year. They found the exact spots where air was leaking and used safe materials to improve indoor air quality.
These barriers reflect about 97 percent of the summer heat, which helps your HVAC system last longer.
Just keep in mind that they only work Monday through Friday. Since they don’t have weekend hours, you’ll need to plan your schedule carefully to be there for the installation.
Customer Reviews:
I would highly recommend this company
Nick was very knowledgeable and explained how eShield insulation could help my home and save on electric bill. Their worker did an excellent job of installing the eShield insulation. They cleaned up after finishing the job and had me inspect the work. I would highly recommend this company Texas Pro insulators.
- Jimmy Montez | Google Review
This was incredibly affordable, highly recommended.
This company is awesome! The owner spoke to us and explained everything very well. I was initially not going to go with the foil insulation as other companies had insanely expensive quotes. This was incredibly affordable, highly recommended if you are looking to get your home insulated and save some money!
- Joshua Lewandowski | Google Review
2. Central Texas RetroFoam
Website: https://www.centraltexasretrofoam.com/
Address: 13603 Topper Cir Ste 5
Contact: (512) 549-6076 | [email protected]
Hours:
- Monday – Thursday: 9:00 AM – 5:30 PM
- Friday: 9:00 AM – 4:00 PM
Tearing down drywall to update your home’s insulation is a messy and expensive nightmare for any property owner. Central Texas RetroFoam avoids this problem entirely by specializing in a unique injection foam designed specifically for existing walls.
This non-invasive process adds high-performance protection to older buildings without requiring costly demolition. Their fast crews can usually finish an entire house in a single afternoon while also adding excellent sound dampening and fire resistance.
On top of that, the airtight seal really helps reduce outside noise from traffic, and the foam itself has an excellent fire rating.
The main downside is that they focus entirely on wall retrofits. If you’re building a brand-new house and need traditional fiberglass batts installed, their single-product approach might not be the right fit for your specific project.
Customer Reviews:
Highly recommend this company for your insulation needs.
Central Texas Retrofoam did a great job putting injection foam into a few walls at my house. North facing and walls with plumbing are now fully insulated. The crew was very fast and efficient and left my property cleaner than when they arrived. I was very impressed with the team! Very nice and completely thorough. The pricing for this small job was much better than their competition. I highly recommend this company for your insulation needs. Injection foam makes a huge difference in energy cost savings, noise abatement and general comfort. Do it! You will thank yourself.
- Allison Thompson | Google Review
Professional/neat staff have fun doing what they do!
Excellent product/workmanship recommend for all Killeen houses built w lousy/no insulation. Noticable sound reduction from helicopter traffic/quieter at night. Cool/warm when/where needed. Professional/neat staff has fun doing what they do!
- Paul Passamonti | Google Review
3. Koala Insulation of North San Antonio
Website: https://koalainsulation.com/
Address: North San Antonio, Texas, 78247
Contact: (210) 904-2371
Hours: Monday – Friday: 8:00 AM – 5:00 PM
Many contractors just blow in materials and leave, which often misses the hidden drafts that silently drain your wallet. Koala Insulation of North San Antonio uses thermal imaging and hatch sealing to identify and stop invisible leaks.
A colleague of mine hired them after some severe storm damage, and they were very impressed with how thorough the team was during the repair process. The crew is a true one-stop shop, handling everything from standard fiberglass to spray foam.
They even back their work with a lifetime warranty and guarantee to leave your home spotless after the job.
Just keep in mind that they close at 5:00 PM on weekdays. This early closing time can make it tough for office workers to schedule a late afternoon walk-through.
Customer Reviews:
Did a great job installing the insulation.
Working with Koala was a great experience from beginning to end. Amanda in sales was knowledgeable and helpful and extremely pleasant. The service was scheduled quickly, the guy’s showed up on time and completed the work quickly. Anthony was great to work with, cleaned everything up and did a great job installing the insulation.
- Greg Coldewey | Google Review
A+ job!
Great company to work with. They were very comparably priced against other companies, but what led me to using them was their great reviews on Google. Andrew was very attentive and came out to measure the project ahead of install date and answered any and all of our questions. The crew that came out to spray foam, and blow in the insulation was professional and very speedy. I would highly recommend this company to my family and friends. A+ job!
- Matt Schipper | Google Review
4. iFOAM Insulation
Website: https://www.ifoam.com/hill-country-tx/
Address: 5355 Brewster St
Contact: (210) 920-7883
Hours: Monday – Saturday: 9:00 AM – 6:00 PM
Large industrial spaces often need heavy-duty applications that standard materials simply can’t provide. iFOAM Insulation offers a robust commercial division specializing in large-scale spray-foam projects for warehouses and retail buildings.
The dense foam creates an airtight barrier that significantly lowers energy costs for many years. This eco-friendly choice keeps buildings very efficient without needing any future maintenance or top-ups.
Through it all, their friendly team manages the entire process, from a free assessment to a final inspection to ensure everything meets local codes.
The only catch to this premium service is the initial cost. Since they focus on advanced spray foam solutions, their starting quotes are usually higher than those of companies that offer basic fiberglass batting.
However, the long-term savings are definitely worth it for most business owners.
Customer Reviews:
They also did an excellent job of cleaning up after.
Fabian and his team were so wonderful to work with! I told him I wanted to live in a yeti cooler and he delivered! I was a little disorganized and he had to make a second and third trip but he was incredibly accommodating and kind about it. They also did an excellent job of cleaning up after. I highly recommend IFOAM insulation and Fabian!!
- Erin D | Google Review
Highly recommended.
Professional, trustworthy, and thorough. Highly recommended. The team worked with my tight schedule, did great work, and ensured I was completely satisfied. I appreciated the frequent communication and the attention to detail given to ensure the insulation for my major home renovation was done correctly and to code. Big thanks to Fabian and team! I will be recommending iFOAM to family and friends.
- Brian FitzGerald | Google Review
5. Prime Spray Foam Insulation San Antonio
Website: https://sanantoniotxsprayfoaminsulation.com/
Address: 327 Bank St
Contact: (210) 940-2447
Hours: Monday – Saturday: 7:00 AM – 7:00 PM
South Texas homes deal with constant humidity and local pests, which can be a real headache. Prime Spray Foam Insulation helps protect your property with custom foam that expands up to 100 times its original size, creating a strong barrier.
If you’re already researching water softener providers for your plumbing, improving your home’s insulation is a smart next step. These dense products provide excellent structural strength to your roof and can last up to 80 years.
They serve a large area, including places like Cibolo and Schertz, providing much better noise control for a quieter life.
Just remember that you and your pets will need to leave the house for a little while after the work is done. This allows the foam to cure safely and ensures the air is clear.
Customer Reviews:
Respond in a timely manner and their customer service is amazing.
I personally like this company. They respond in a timely manner and their customer service is amazing and outstanding. So, i gave them 5 *’s because even tho I responded to a job ad late in the night; they still responded back pretty fast. 🙂
- Rosa Sanchez | Google Review
