
Get matched with top insulation pros in San Marcos, TX
There are 21 highly-rated local insulation pros.
Need a pro for your insulation service project in San Marcos, TX?
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Verified Reviews for Insulation Service pros in San Marcos, TX
*The Angi rating for Insulation Service companies in San Marcos, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in San Marcos, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on October 16, 2025
Find Insulation pros in San Marcos

Koala Insulation of Texas Hill Country
Koala Insulation of Texas Hill Country
Koala Insulation of is the area's certified insulation expert providing high-quality insulation services to homeowners, contractors and property owners. We work with new construction, retrofit applications, and properties affected by natural disasters or that have suffered significant damage (no mobile home pls). We provide all types of insulation including blown-in cellulose and fiberglass, spray foam, and batt-insulation. Furthermore, we provide a number of energy efficiency upgrades such as air sealing, thermal imaging, hatch and can light covers. If it involves insulating or improving energy efficiency within a building envelope, we can handle it. We offer competitive prices and free insulation evaluations. We are locally owned and operated, fully insured and licensed, and our services come with a limited lifetime warranty.
"They did a great job and are highly recommended"
Damon B on October 2024
Koala Insulation of is the area's certified insulation expert providing high-quality insulation services to homeowners, contractors and property owners. We work with new construction, retrofit applications, and properties affected by natural disasters or that have suffered significant damage (no mobile home pls). We provide all types of insulation including blown-in cellulose and fiberglass, spray foam, and batt-insulation. Furthermore, we provide a number of energy efficiency upgrades such as air sealing, thermal imaging, hatch and can light covers. If it involves insulating or improving energy efficiency within a building envelope, we can handle it. We offer competitive prices and free insulation evaluations. We are locally owned and operated, fully insured and licensed, and our services come with a limited lifetime warranty.
"They did a great job and are highly recommended"
Damon B on October 2024

Jon Wayne Service Company
Jon Wayne Service Company
We are proud to be San Antonio's largest residential heating and air conditioning contractor. From the moment you call until the job is done, our goal is your 100% satisfaction. If the job is not done right, we will make it right.
"I had a problem with my AC and called them for a service appointment. John Wayne has a good reputation, so I chose to call them and they were quick to respond. The tech who came to my residence was very friendly and professional, however, he seemed more like a sales rep than a technician. After a few hours and $950 worth of work, he indicated that the HVAC system was not repairable. He created a quote for various options to install a new system. I had previously researched average costs for replacement of a 5 ton / 16 SEER system, which averaged approximately $9-10K for a reputable company with reliable brands. The first option the tech provided was for $40,600, which was a little surprising. He offered several options, with the cheapest being $10,700 for the lowest quality equipment and least warranty. He indicated that the primary difference between John Wayne and other companies is the quality and training of the employees. He also used typical sales techniques, such as “why would you feel different tomorrow” when I indicated that I’d prefer to think about the decisive overnight. During research online, I saw that John Wayne uses Amana products, which are a little more expensive but highly rated and manufactured here in Texas. I purchased a system one echelon higher than the lowest priced system for $13,700, still well-above what I was prepare to pay; however, the tech indicated that they would waive the outstanding $950 bill if I purchased the system and they would be able to install the next day. The next morning, four techs arrived, all pleasant and professional; however, only one appeared to be a trained technician, while the other three appeared to be labor for assisting and conducting menial tasks, such as cleaning the ducts. Within the first hour, two of them accidentally shattered several sconces on the chandelier in my dining room when a piece of equipment fell while cleaning a duct. They are still here in my house installing, but I truly feel like paid too much. Again, I don’t doubt that they are a solid company, but feel like was pressed by a salesman rather than a technician when I needed an urgent problem addressed. I believe I could’ve purchased just as good of a system, maybe better, from a reliable company for a few thousand dollars less."
Shane F on September 2021
We are proud to be San Antonio's largest residential heating and air conditioning contractor. From the moment you call until the job is done, our goal is your 100% satisfaction. If the job is not done right, we will make it right.
"I had a problem with my AC and called them for a service appointment. John Wayne has a good reputation, so I chose to call them and they were quick to respond. The tech who came to my residence was very friendly and professional, however, he seemed more like a sales rep than a technician. After a few hours and $950 worth of work, he indicated that the HVAC system was not repairable. He created a quote for various options to install a new system. I had previously researched average costs for replacement of a 5 ton / 16 SEER system, which averaged approximately $9-10K for a reputable company with reliable brands. The first option the tech provided was for $40,600, which was a little surprising. He offered several options, with the cheapest being $10,700 for the lowest quality equipment and least warranty. He indicated that the primary difference between John Wayne and other companies is the quality and training of the employees. He also used typical sales techniques, such as “why would you feel different tomorrow” when I indicated that I’d prefer to think about the decisive overnight. During research online, I saw that John Wayne uses Amana products, which are a little more expensive but highly rated and manufactured here in Texas. I purchased a system one echelon higher than the lowest priced system for $13,700, still well-above what I was prepare to pay; however, the tech indicated that they would waive the outstanding $950 bill if I purchased the system and they would be able to install the next day. The next morning, four techs arrived, all pleasant and professional; however, only one appeared to be a trained technician, while the other three appeared to be labor for assisting and conducting menial tasks, such as cleaning the ducts. Within the first hour, two of them accidentally shattered several sconces on the chandelier in my dining room when a piece of equipment fell while cleaning a duct. They are still here in my house installing, but I truly feel like paid too much. Again, I don’t doubt that they are a solid company, but feel like was pressed by a salesman rather than a technician when I needed an urgent problem addressed. I believe I could’ve purchased just as good of a system, maybe better, from a reliable company for a few thousand dollars less."
Shane F on September 2021
iFoam Hill Country
iFoam Hill Country
iFOAM is a U.S.-based insulation franchise fueled by the franchising experts at HorsePower Brands. We specialize in spray foam insulation and also provide best-in-industry blown-in solutions, insulation removal, retrofitting and other specialty project services. At iFOAM, we saw an issue with the industry—a lack of quality and trustworthy services and a clear absence of certified training when it came to spray foam. At iFOAM, we’re flipping the script by providing our certified technicians with the best tools, training and products in the trade and bolstering your experience with prompt, timely communication.
iFOAM is a U.S.-based insulation franchise fueled by the franchising experts at HorsePower Brands. We specialize in spray foam insulation and also provide best-in-industry blown-in solutions, insulation removal, retrofitting and other specialty project services. At iFOAM, we saw an issue with the industry—a lack of quality and trustworthy services and a clear absence of certified training when it came to spray foam. At iFOAM, we’re flipping the script by providing our certified technicians with the best tools, training and products in the trade and bolstering your experience with prompt, timely communication.

Payless Insulation
Payless Insulation
13-Time Service Award Winner! Since 1979, Payless Insulation has provided the best insulation products and installation to Austin and the surrounding areas. Our highly trained technicians are on-time, perform with minimal disruption and go to great lengths to protect your belongings and leave the site clean.
"Finished in two day, very nice job and did a great job of cleaning up after"
Jane B on January 2024
13-Time Service Award Winner! Since 1979, Payless Insulation has provided the best insulation products and installation to Austin and the surrounding areas. Our highly trained technicians are on-time, perform with minimal disruption and go to great lengths to protect your belongings and leave the site clean.
"Finished in two day, very nice job and did a great job of cleaning up after"
Jane B on January 2024

Affordable Insulation, LLC
Affordable Insulation, LLC
Affordable Insulation is a full service insulation contracting company for existing homeowners to find ways to improve the effectiveness in reducing home energy consumption. We specialize in drill-n-fill to exterior walls where no insulation exists, re-insulation of attics to increase R-value and garage door insulation kits.
"Used Affordable Insulation to blow in fiberglass insulation into attic above 3 car garage. They were quick to reply to my initial inquiry and follow up questions. Marc had the estimate to me the same day I contacted them. Their estimate was much more affordable (pun intended!) than another quote I received. I was very pleased with their number and was ready to hire them. The team of Jason, Jason, and Daniel were courteous, friendly and professional. They called ahead and showed up as scheduled. They made quick work of the job. The job came out looking great. Insulation depth was a couple inches deeper than expected so was pleased about that as well. They ensured no insulation was in the overflow drain pans of water heater or AC since that could clog the overflow drains causing them to backup. They cleaned up all excess insulation that had fallen into the garage. Attention to detail was superb. I highly recommend Affordable Insulation."
Doug B on July 2023
Affordable Insulation is a full service insulation contracting company for existing homeowners to find ways to improve the effectiveness in reducing home energy consumption. We specialize in drill-n-fill to exterior walls where no insulation exists, re-insulation of attics to increase R-value and garage door insulation kits.
"Used Affordable Insulation to blow in fiberglass insulation into attic above 3 car garage. They were quick to reply to my initial inquiry and follow up questions. Marc had the estimate to me the same day I contacted them. Their estimate was much more affordable (pun intended!) than another quote I received. I was very pleased with their number and was ready to hire them. The team of Jason, Jason, and Daniel were courteous, friendly and professional. They called ahead and showed up as scheduled. They made quick work of the job. The job came out looking great. Insulation depth was a couple inches deeper than expected so was pleased about that as well. They ensured no insulation was in the overflow drain pans of water heater or AC since that could clog the overflow drains causing them to backup. They cleaned up all excess insulation that had fallen into the garage. Attention to detail was superb. I highly recommend Affordable Insulation."
Doug B on July 2023

High Caliber Spray Foam Specialists
High Caliber Spray Foam Specialists
We are Central Texas' premier spray foam insulation experts! With more than 25 years in commercial and residential construction services, High Caliber has the knowledge and experience required, no matter the complexity of the project. High Caliber Spray Foam Specialists combine state of the art intelligent equipment, real-time analytics and deep construction expertise to bring you the most accurate, most efficient spray foam install.
"Great efficient!"
Jason E on March 2025
We are Central Texas' premier spray foam insulation experts! With more than 25 years in commercial and residential construction services, High Caliber has the knowledge and experience required, no matter the complexity of the project. High Caliber Spray Foam Specialists combine state of the art intelligent equipment, real-time analytics and deep construction expertise to bring you the most accurate, most efficient spray foam install.
"Great efficient!"
Jason E on March 2025
Sustainable Roofing & Solar
Sustainable Roofing & Solar
"At Sustainable Roofing and Solar, we care deeply about people and our environment. As an Home Performance Contractor our core values involve good business ethics which drives us to create a stronger more sustainable future. Through cutting energy costs and leveraging government incentive programs, we strive to facilitate a thriving quality of life through solar energy for as many American families and businesses as possible. Sustainable Solar was founded in Keller, Texas, and now serves the entire Lonestar state. Our goal is to educate and help every customer achieve their solar dreams. Local business. Free Estimates. Serving San Antonio. Lowes PROvider."
"From start to finish working with Sustainable was a pleasant experience! Would definitely recommend. Customer service was excellent and prices were very affordable."
Lisa C on September 2024
"At Sustainable Roofing and Solar, we care deeply about people and our environment. As an Home Performance Contractor our core values involve good business ethics which drives us to create a stronger more sustainable future. Through cutting energy costs and leveraging government incentive programs, we strive to facilitate a thriving quality of life through solar energy for as many American families and businesses as possible. Sustainable Solar was founded in Keller, Texas, and now serves the entire Lonestar state. Our goal is to educate and help every customer achieve their solar dreams. Local business. Free Estimates. Serving San Antonio. Lowes PROvider."
"From start to finish working with Sustainable was a pleasant experience! Would definitely recommend. Customer service was excellent and prices were very affordable."
Lisa C on September 2024
OTX FoamWorks LLC
OTX FoamWorks LLC
Spray Foam Insulation (Open and Closed Cell). Energy Efficient. Veteran Owned and Operated.
Spray Foam Insulation (Open and Closed Cell). Energy Efficient. Veteran Owned and Operated.
Express Reconstruction
Express Reconstruction
Your premier General Contractor for all your home repair needs! Trust us for expert craftsmanship, timely service, and reliable solutions. From minor touch-ups to major reconstruction, we specialize in a wide range of home repair services. Our expert team can tackle everything from small drywall repairs to extensive damage restoration projects. Whether it's repairing fencing, refreshing paint, fixing drywall, addressing roofing issues, resolving leaks, or mitigating storm damage, count on Express Reconstruction to handle it all with precision and efficiency. Trust us to restore your home to its former glory!
Your premier General Contractor for all your home repair needs! Trust us for expert craftsmanship, timely service, and reliable solutions. From minor touch-ups to major reconstruction, we specialize in a wide range of home repair services. Our expert team can tackle everything from small drywall repairs to extensive damage restoration projects. Whether it's repairing fencing, refreshing paint, fixing drywall, addressing roofing issues, resolving leaks, or mitigating storm damage, count on Express Reconstruction to handle it all with precision and efficiency. Trust us to restore your home to its former glory!
Perez Roofing & Remolding (Leticia is wife)
Perez Roofing & Remolding (Leticia is wife)
Roofing , Fencing, general remolding, etc. Great Customer services, Friendly, Bilingual 20+ years in service.
Roofing , Fencing, general remolding, etc. Great Customer services, Friendly, Bilingual 20+ years in service.
The San Marcos, TX homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.
Crawl space insulation costs vary by size, insulation type, and material. Read this guide to learn how much your crawl space insulation could cost.
New insulation can make your home more comfortable and boost energy efficiency. Use this insulation cost guide to get an accurate estimate for the installation.
The cost to insulate a basement varies based on materials, size, and other factors, as well as how much of the work you wish to perform yourself.
The best insulation for your basement depends on the insulation location, budget, and climate. Here’s what you need to know about insulation for basements.
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Find out the average pipe insulation cost, including material and labor prices, plus tips to save money on your project.
Read our guide to insulating your attic for energy efficiency and comfort. Learn expert safety tips, cost considerations, proper preparation, and more.
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- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"