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Verified Reviews for Insulation Service pros in Alamo, CA
*The Angi rating for Insulation Service companies in Alamo, CA 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 Alamo, CA 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 December 13, 2025
Find Insulation pros in Alamo

Attic Pros
Attic Pros
Attic Pros is your go-to attic insulation installation and rodent removal contractor in San Francisco Bay Area. We offer a wide range of services for rodent removal, attic cleaning, insulation replacement, and crawl space cleaning to meet all your needs. Our team is dedicated to providing you with the best possible customer service. Contact us today for a free estimate!
"All done nicely"
Mandeep R on February 2025
Attic Pros is your go-to attic insulation installation and rodent removal contractor in San Francisco Bay Area. We offer a wide range of services for rodent removal, attic cleaning, insulation replacement, and crawl space cleaning to meet all your needs. Our team is dedicated to providing you with the best possible customer service. Contact us today for a free estimate!
"All done nicely"
Mandeep R on February 2025
Bay Valley Insulation Inc
Bay Valley Insulation Inc
Insulation of New and Existing Construction throughout the Greater Bay Area. Additional phones - (510) 440-8489, (800) 281-0401. For best results when requesting a quote please include the following: 1-Your phone number 2-Approximate Square Footage of Job. 3-Clearance of Attic at Peak 4-Approximate thickness of current insulation 5-Age of home 6-Is this a one or two story home
"Happy with everything from start to finish. Quality work and great customer service including filing for the California rebates!"
Bryan C on July 2024
Insulation of New and Existing Construction throughout the Greater Bay Area. Additional phones - (510) 440-8489, (800) 281-0401. For best results when requesting a quote please include the following: 1-Your phone number 2-Approximate Square Footage of Job. 3-Clearance of Attic at Peak 4-Approximate thickness of current insulation 5-Age of home 6-Is this a one or two story home
"Happy with everything from start to finish. Quality work and great customer service including filing for the California rebates!"
Bryan C on July 2024

Attic kings
Attic kings
Our company specializes attic/crawl space clean up mice/rodents proofing ,insulation removal, insulation installation, vapor barrier, radiant barrier, sanitation, air duct repair and replacement, air sealing. We usually doing Free inspection before work
"Moshe and his team at Attic Kings are amazing! When I contacted them, they got back to me almost immediately with a date and time for an estimate to install insulation. Moshe was very communicative, texting and calling to let me know when he would arrive. On installation day, Moshe made sure to keep everything as clean as possible, and everything went incredibly well. They are all so kind--would definitely hire again!"
Liz S on September 2022
Our company specializes attic/crawl space clean up mice/rodents proofing ,insulation removal, insulation installation, vapor barrier, radiant barrier, sanitation, air duct repair and replacement, air sealing. We usually doing Free inspection before work
"Moshe and his team at Attic Kings are amazing! When I contacted them, they got back to me almost immediately with a date and time for an estimate to install insulation. Moshe was very communicative, texting and calling to let me know when he would arrive. On installation day, Moshe made sure to keep everything as clean as possible, and everything went incredibly well. They are all so kind--would definitely hire again!"
Liz S on September 2022

American Attics
American Attics
The business specializes in providing insulation solutions aimed at optimizing energy efficiency for residential properties. We offer a range of insulation products and services tailored to different types of homes and climates, helping homeowners reduce energy consumption and lower utility bills while enhancing comfort and sustainability.
"The work was performed to my satisfaction. The Sam and the crew arrived on time and explained what was going to happen. The crew prepared the house to minimize any dust and went to work. The job was completed in two days. There were a couple of issues during the job, which were addressed in a timely manner. Overall, I am very happy with the work and would recommend American Attics."
Jeff L on June 2024
The business specializes in providing insulation solutions aimed at optimizing energy efficiency for residential properties. We offer a range of insulation products and services tailored to different types of homes and climates, helping homeowners reduce energy consumption and lower utility bills while enhancing comfort and sustainability.
"The work was performed to my satisfaction. The Sam and the crew arrived on time and explained what was going to happen. The crew prepared the house to minimize any dust and went to work. The job was completed in two days. There were a couple of issues during the job, which were addressed in a timely manner. Overall, I am very happy with the work and would recommend American Attics."
Jeff L on June 2024

Insulation Alliance
Insulation Alliance
In Business Since 2017 Insulation Alliance is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Insulation Alliance is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
"When Insulation Alliance came, they were very professional. They laid down plastic everywhere in the hallway and the bedroom. They cleaned out the whole attic. They took out the old insulation and put in the new Insulation which was R 44. They cleaned up everything and everything was clean when they left. They also sanitized the attic. You will not be disappointed that you hired."
Gloria l on January 2024
In Business Since 2017 Insulation Alliance is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Insulation Alliance is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
"When Insulation Alliance came, they were very professional. They laid down plastic everywhere in the hallway and the bedroom. They cleaned out the whole attic. They took out the old insulation and put in the new Insulation which was R 44. They cleaned up everything and everything was clean when they left. They also sanitized the attic. You will not be disappointed that you hired."
Gloria l on January 2024

Los Gatos Roofing
Los Gatos Roofing
Excellence in Roofing is more than just a tag line at Los Gatos Roofing; it is a way of doing business. With a long and storied history of service in the Bay Area, the Los Gatos Roofing family demands a strong commitment to customer service and the highest quality standards of craftsmanship. Additional address - PO Box 1726, Los Gatos, CA 95031. Additional phone number - (408) 395-9091. Additional contact names - Gary Radonich, Cameron Radonich, Randy Brown.
"This was a small job, but I was treated well. Their price was good, they were professional and prompt. I could not ask for more."
Andrew L on July 2022
Excellence in Roofing is more than just a tag line at Los Gatos Roofing; it is a way of doing business. With a long and storied history of service in the Bay Area, the Los Gatos Roofing family demands a strong commitment to customer service and the highest quality standards of craftsmanship. Additional address - PO Box 1726, Los Gatos, CA 95031. Additional phone number - (408) 395-9091. Additional contact names - Gary Radonich, Cameron Radonich, Randy Brown.
"This was a small job, but I was treated well. Their price was good, they were professional and prompt. I could not ask for more."
Andrew L on July 2022

ROOFMASTERS
ROOFMASTERS
Thank you for considering us! ROOFMASTERS is a third generation family owned and operated business. We have been proudly serving Solano, Contra Costa, Napa, Yolo and Sacramento counties for over 20 years. It is our goal to provide with the absolute best service possible. We pride ourselves on great workmanship and our guarantees reflect that by being the best in the industry. We specialize in new and re-roofs, solar, repairs and real estate inspections. Please call us for a free estimate today. 5% military or senior discounts up to $500.00
"Local Professionals come through: I had a water flow problem on the front center part of my roof that resulted in some of the sheathing under the overhang to dry rot. I also had a rain gutter with damage caused by a leaning tree. I called Roofmasters for a free quote. Johnathon explained the process and answered all my questions. Aaron arrived on-time for the quote on 8/27/2018. He explained what caused the dry rot and answered my questions regarding concerns I had about other areas of my roof. He put my mind at rest – telling me that my roof appeared to be in good shape except for the area that brought him there that day. I received the written quote on 8/31/2018 for the roof and gutter repairs and scheduled the work to be done on 9/14/2018. They called 30 minutes before arrival as promised. They were professional, courteous, efficient, and cleaned up after themselves well. They even replaced a couple cracked tiles at no additional charge. They are a local company (Suisun City, CA) that obviously still takes pride in their work. This seems to be a trait that is in short supply these days. I’ll definitely call them again the next time I need help with my roof."
Bob D on November 2018
Thank you for considering us! ROOFMASTERS is a third generation family owned and operated business. We have been proudly serving Solano, Contra Costa, Napa, Yolo and Sacramento counties for over 20 years. It is our goal to provide with the absolute best service possible. We pride ourselves on great workmanship and our guarantees reflect that by being the best in the industry. We specialize in new and re-roofs, solar, repairs and real estate inspections. Please call us for a free estimate today. 5% military or senior discounts up to $500.00
"Local Professionals come through: I had a water flow problem on the front center part of my roof that resulted in some of the sheathing under the overhang to dry rot. I also had a rain gutter with damage caused by a leaning tree. I called Roofmasters for a free quote. Johnathon explained the process and answered all my questions. Aaron arrived on-time for the quote on 8/27/2018. He explained what caused the dry rot and answered my questions regarding concerns I had about other areas of my roof. He put my mind at rest – telling me that my roof appeared to be in good shape except for the area that brought him there that day. I received the written quote on 8/31/2018 for the roof and gutter repairs and scheduled the work to be done on 9/14/2018. They called 30 minutes before arrival as promised. They were professional, courteous, efficient, and cleaned up after themselves well. They even replaced a couple cracked tiles at no additional charge. They are a local company (Suisun City, CA) that obviously still takes pride in their work. This seems to be a trait that is in short supply these days. I’ll definitely call them again the next time I need help with my roof."
Bob D on November 2018

Guardian Protection
Guardian Protection
Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.
"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."
William M on December 2024
Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.
"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."
William M on December 2024

Attic Masters insulation Services
Attic Masters insulation Services
Attic Masters Insulation Services specializes in providing high-quality insulation solutions for residential properties. Our services include insulation removal, installation, and attic cleaning, focusing on energy efficiency and comfort. With a commitment to eco-friendly materials and practices, we ensure environmentally responsible solutions that enhance indoor air quality. Our experienced team assesses your specific needs and offers customized insulation options tailored to your home. We pride ourselves on delivering reliable service, customer satisfaction, and maintaining a clean work environment. Choose Attic Masters to improve your home’s energy efficiency and comfort while reducing energy costs for a healthier living space.
"i can only say good things about working with Attic masters. Great communication, They came on time, protected our floors and hallway from insulation dust, took pictures of the before and after for us so we can get the rebate. overall, very easy and stress free company to work with. I would definitely use again, it was a pleasure to work with true professionals."
Victor H on October 2021
Attic Masters Insulation Services specializes in providing high-quality insulation solutions for residential properties. Our services include insulation removal, installation, and attic cleaning, focusing on energy efficiency and comfort. With a commitment to eco-friendly materials and practices, we ensure environmentally responsible solutions that enhance indoor air quality. Our experienced team assesses your specific needs and offers customized insulation options tailored to your home. We pride ourselves on delivering reliable service, customer satisfaction, and maintaining a clean work environment. Choose Attic Masters to improve your home’s energy efficiency and comfort while reducing energy costs for a healthier living space.
"i can only say good things about working with Attic masters. Great communication, They came on time, protected our floors and hallway from insulation dust, took pictures of the before and after for us so we can get the rebate. overall, very easy and stress free company to work with. I would definitely use again, it was a pleasure to work with true professionals."
Victor H on October 2021
"Good. Should up on time, did the job and left in about three hours. Got what we paid for."
Don S on September 2020
OWNER-OPERATED.
"Good. Should up on time, did the job and left in about three hours. Got what we paid for."
Don S on September 2020
The Alamo, CA homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.

The cost of blown-in insulation costs varies depending on the type of insulation, labor, prep work, and more. Learn more about the cost factors in this guide.
•Discover roof insulation costs, including average prices, key cost factors, and expert tips to help you budget and save on your next project.

Crawl space insulation costs vary by size, insulation type, and material. Read this guide to learn how much your crawl space insulation could cost.

Insulating your home with a quality product is not a decision to be taken lightly. Compare open-cell foam versus closed-cell foam insulation to find the best solution.

Is fiberglass dangerous? Our guide walks you through the risks of working with fiberglass—and why it still makes sense as an insulation material for your home.

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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