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Verified Reviews for Insulation Service pros in Longmont, CO
*The Angi rating for Insulation Service companies in Longmont, CO 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 Longmont, CO 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 12, 2025
Find Insulation pros in Longmont

NetZero Insulation
NetZero Insulation
We can be reached at 720-517-0011. We have been in the Insulation Industry for almost 3 decades now. We have done most types of construction projects from multi-million dollar commercial projects, small to large remodels projects and large track home developments. About 7 years ago, we started working with a few select custom green energy builders. This afforded us the opportunity to work directly with homeowners to develop insulation and energy plans that fit their needs. We quickly realized how much we enjoyed working directly with homeowners vs. a big builder that may not have the buyer's long term interests at heart.
"I had 1700 sf of attic space insulated and air sealed in a two attic, tri-level house. Ryan was absolutely awesome. He was very knowledgeable and answered everyone of my questions...I had a lot. They showed up early to every appointment. Once the job was completed, they did an awesome job cleaning up and vacuuming with their HEPA vacuum. I would highly, highly recommend these guys. They also filled out the Xcel rebates for me and subtracted from my bill. AND, they did a blower door test to validate the air leakiness of my house. They were able to reduce my leakiness by 52%!!! The next day, I could feel the difference already!"
John R on March 2019
We can be reached at 720-517-0011. We have been in the Insulation Industry for almost 3 decades now. We have done most types of construction projects from multi-million dollar commercial projects, small to large remodels projects and large track home developments. About 7 years ago, we started working with a few select custom green energy builders. This afforded us the opportunity to work directly with homeowners to develop insulation and energy plans that fit their needs. We quickly realized how much we enjoyed working directly with homeowners vs. a big builder that may not have the buyer's long term interests at heart.
"I had 1700 sf of attic space insulated and air sealed in a two attic, tri-level house. Ryan was absolutely awesome. He was very knowledgeable and answered everyone of my questions...I had a lot. They showed up early to every appointment. Once the job was completed, they did an awesome job cleaning up and vacuuming with their HEPA vacuum. I would highly, highly recommend these guys. They also filled out the Xcel rebates for me and subtracted from my bill. AND, they did a blower door test to validate the air leakiness of my house. They were able to reduce my leakiness by 52%!!! The next day, I could feel the difference already!"
John R on March 2019

Precision Spray Foam
Precision Spray Foam
Precision Spray Foam is a locally owned and operated company that provides high-quality spray foam insulation solutions for residential and commercial customers. Whether you need to insulate your pole barn, shop, attic, crawl space, walls, or roof, we have the expertise and experience to handle any project. We use only the best materials to ensure optimal energy efficiency and comfort for your home or business. We also offer estimates, competitive pricing, and excellent customer service. Contact Precision Spray Foam today to find out how we can help you save money and improve your indoor environment with our insulation services.
"Great communication, Quality Work, Fair Price!"
Marcie W on February 2025
Precision Spray Foam is a locally owned and operated company that provides high-quality spray foam insulation solutions for residential and commercial customers. Whether you need to insulate your pole barn, shop, attic, crawl space, walls, or roof, we have the expertise and experience to handle any project. We use only the best materials to ensure optimal energy efficiency and comfort for your home or business. We also offer estimates, competitive pricing, and excellent customer service. Contact Precision Spray Foam today to find out how we can help you save money and improve your indoor environment with our insulation services.
"Great communication, Quality Work, Fair Price!"
Marcie W on February 2025

Colorado Home Services
Colorado Home Services
CHS is a local, veteran-owned licensed electrical contractor that provides full residential electrical services with deep expertise in whole house fans, attic fans and ventilation, sun tunnels and skylights. We have been providing the most environmentally friendly, cost-effective and energy-efficient home cooling and daylighting solutions in Colorado since 2003. We pride ourselves on delivering an un-matched customer service experience. From pricing to install, our team is dedicated to earning your trust and finding the best home cooling and daylighting solutions for your home, no matter what! Offering industry-leading brands and a wide range of products suited for any home, we are Colorado's premier home electrical, cooling and daylighting provider.
"When it comes to home services, CHC sets the bar exceedingly high. They installed a whole house fan that dramatically reduced the amount I need to run my AC. They were on time, professional, and completed the install faster than expected (~3.5 hours). They cleaned up after and took some time to train me on the many ways I could use the fan to save energy and improve comfort in my home, some of which I wouldn't have thought of. In an industry where low expectations seems to be the norm, to say that CHC exceeds expectations is an understatement."
Tyler N on September 2022
CHS is a local, veteran-owned licensed electrical contractor that provides full residential electrical services with deep expertise in whole house fans, attic fans and ventilation, sun tunnels and skylights. We have been providing the most environmentally friendly, cost-effective and energy-efficient home cooling and daylighting solutions in Colorado since 2003. We pride ourselves on delivering an un-matched customer service experience. From pricing to install, our team is dedicated to earning your trust and finding the best home cooling and daylighting solutions for your home, no matter what! Offering industry-leading brands and a wide range of products suited for any home, we are Colorado's premier home electrical, cooling and daylighting provider.
"When it comes to home services, CHC sets the bar exceedingly high. They installed a whole house fan that dramatically reduced the amount I need to run my AC. They were on time, professional, and completed the install faster than expected (~3.5 hours). They cleaned up after and took some time to train me on the many ways I could use the fan to save energy and improve comfort in my home, some of which I wouldn't have thought of. In an industry where low expectations seems to be the norm, to say that CHC exceeds expectations is an understatement."
Tyler N on September 2022
"I had a great experience with Phil & Arvada Insulation. One of the bedrooms in our 1959 house was always colder in the Winter and warmer in the Summer. Now that it was a nursery for our baby boy we needed to do something about it. After trying a new vent and cellular shades I decided it was time to try to get the walls insulated, which felt like it would be a daunting (and expensive!) task. I called Phil from Arvada Insulation because I knew he was local to my neighborhood. Phil talked me through his process and my options to blow in insulation into the walls then scheduled a same day estimate. He was right on time for the estimate (though I almost napped through it) and throughly reviewed the room inside and out then provided my options and a hand-written estimate at a shocking reasonable price. I was hesitant about how my exterior brick/mortar would look following the project and Phil went the extra mile by showing me some other properties where he had done similar work and creating a new mortar sample just for me. On the day of the project Phil again showed up on-time, was respectful of my property, and did an extremely professional and thorough job. The best part is that it actually WORKED! My baby's nursery maintained heat 3-4 degrees better than it had before which is such a huge relief. I highly recommend Phil & Arvada Insulation and will most definitely be calling him for future insulation projects."
Benjamin F on November 2024
"I had a great experience with Phil & Arvada Insulation. One of the bedrooms in our 1959 house was always colder in the Winter and warmer in the Summer. Now that it was a nursery for our baby boy we needed to do something about it. After trying a new vent and cellular shades I decided it was time to try to get the walls insulated, which felt like it would be a daunting (and expensive!) task. I called Phil from Arvada Insulation because I knew he was local to my neighborhood. Phil talked me through his process and my options to blow in insulation into the walls then scheduled a same day estimate. He was right on time for the estimate (though I almost napped through it) and throughly reviewed the room inside and out then provided my options and a hand-written estimate at a shocking reasonable price. I was hesitant about how my exterior brick/mortar would look following the project and Phil went the extra mile by showing me some other properties where he had done similar work and creating a new mortar sample just for me. On the day of the project Phil again showed up on-time, was respectful of my property, and did an extremely professional and thorough job. The best part is that it actually WORKED! My baby's nursery maintained heat 3-4 degrees better than it had before which is such a huge relief. I highly recommend Phil & Arvada Insulation and will most definitely be calling him for future insulation projects."
Benjamin F on November 2024

Red Diamond Roofing
Red Diamond Roofing
Red Diamond Roofing is a full-service roofing contractor serving the Colorado front-range. We offer new roof installations as well as roof repair services to both residential and commercial clients. Additional services include blown-in fiberglass attic insulation, gutter and Siding installation. We are a business dedicated to a superior customer experience. Being upfront and ethical is our philosophy for good business. The difference between a good roof and a great roof is attention to detail. We take pride in delivering a quality product each and every time. We offer 0% financing for up to 12 months if you qualify for purchases from $1,000 - $45,000
"We worked with Brian at Red Diamond and couldn't have been happier. The true measure of a company and individual does not become apparent until there are issues. We had one and Red Diamond and Brian stood behind their word and corrected the issue. We definitely will be repeat customers!"
Brian H on May 2022
Red Diamond Roofing is a full-service roofing contractor serving the Colorado front-range. We offer new roof installations as well as roof repair services to both residential and commercial clients. Additional services include blown-in fiberglass attic insulation, gutter and Siding installation. We are a business dedicated to a superior customer experience. Being upfront and ethical is our philosophy for good business. The difference between a good roof and a great roof is attention to detail. We take pride in delivering a quality product each and every time. We offer 0% financing for up to 12 months if you qualify for purchases from $1,000 - $45,000
"We worked with Brian at Red Diamond and couldn't have been happier. The true measure of a company and individual does not become apparent until there are issues. We had one and Red Diamond and Brian stood behind their word and corrected the issue. We definitely will be repeat customers!"
Brian H on May 2022

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
ALL CLEAN RESTORATION SERVICES
ALL CLEAN RESTORATION SERVICES
COMPANY STATEMENT: CREATING CHEERLEADERS WITH EVERY HANDSHAKE. American Service companies have lost the art of the word "SERVICE". Our goal is to create a new cheerleader on our sideline with every project performed. All Clean Restoration is an IICRC water and mold certified orginization. Performing water and mold remediation services for the insurance industry, realestate industry, property management industry, and private residence. With over 700 projects performed per year our list of satisfied clients continues to grow.
"I hired Doug and his crew to handle some mold and Radon issues in my home and I couldn't be more pleased with every aspect of this project. On his initial visit, he was very thorough and seemed very knowledgeable. He quoted me what I considered a reasonable price. His workers arrived as scheduled and were very polite. The work was completed in a timely manner and the results looked very professional. I would not hesitate to work with them again in the future and would highly recommend their services."
Frank A on September 2020
COMPANY STATEMENT: CREATING CHEERLEADERS WITH EVERY HANDSHAKE. American Service companies have lost the art of the word "SERVICE". Our goal is to create a new cheerleader on our sideline with every project performed. All Clean Restoration is an IICRC water and mold certified orginization. Performing water and mold remediation services for the insurance industry, realestate industry, property management industry, and private residence. With over 700 projects performed per year our list of satisfied clients continues to grow.
"I hired Doug and his crew to handle some mold and Radon issues in my home and I couldn't be more pleased with every aspect of this project. On his initial visit, he was very thorough and seemed very knowledgeable. He quoted me what I considered a reasonable price. His workers arrived as scheduled and were very polite. The work was completed in a timely manner and the results looked very professional. I would not hesitate to work with them again in the future and would highly recommend their services."
Frank A on September 2020

Ethos General Contractors LLC
Ethos General Contractors LLC
Ethos Roofing and Restoration is a locally-owned company specializing in residential roofing. When disaster strikes, we’re on your side. We’ve installed thousands of roofs in the Denver area and will help you with insurance claim assistance to help get your home back in pristine condition. With an A+ Rating from the Better Business Bureau, you can trust us to take care of your roofing and restoration needs. Our licensed and insured contractors can help with roofing, gutters, siding, painting, insulation, windows, doors and more. And, being a family-owned business, you can be sure we’ll do a great job for our neighbors – you. We’ve built our company on three principles – quality, integrity and character. Whether it’s a simple repair or a complete property restoration, we’ll take the time to walk you through the process, answer all your questions and exceed your expectations. We’ll do the job the right way, on time with no shortcuts and no hassles.
"Highly recommend Ethos Roofing in Daphne for any needed roofing work. Worked with Nick for replacement of my roof. The process was very smooth, work was done very timely as promised. Cleanup of old roofing material and nails was done well. Great company."
Patti S on April 2023
Ethos Roofing and Restoration is a locally-owned company specializing in residential roofing. When disaster strikes, we’re on your side. We’ve installed thousands of roofs in the Denver area and will help you with insurance claim assistance to help get your home back in pristine condition. With an A+ Rating from the Better Business Bureau, you can trust us to take care of your roofing and restoration needs. Our licensed and insured contractors can help with roofing, gutters, siding, painting, insulation, windows, doors and more. And, being a family-owned business, you can be sure we’ll do a great job for our neighbors – you. We’ve built our company on three principles – quality, integrity and character. Whether it’s a simple repair or a complete property restoration, we’ll take the time to walk you through the process, answer all your questions and exceed your expectations. We’ll do the job the right way, on time with no shortcuts and no hassles.
"Highly recommend Ethos Roofing in Daphne for any needed roofing work. Worked with Nick for replacement of my roof. The process was very smooth, work was done very timely as promised. Cleanup of old roofing material and nails was done well. Great company."
Patti S on April 2023

Paramount Siding & Windows
Paramount Siding & Windows
When choosing a home improvement company for your home, Paramount Siding and Windows should be in the conversation. The foundation of our company has been built on fair pricing, quality of work, and a low pressure sales approach. We are a local company, not a franchise, and have served many families within our region. Our showroom is located in Littleton, CO. We have strong relationships with all of the top rated manufacturers in the business, which enables us to offer factory-direct prices along with great financing options. If you are looking into having a window or siding project done, give Paramount an opportunity to show you what we have to offer. You have no obligation to make an on-the-spot decision the day of the appointment. Our prices are as good today as they are tomorrow.
"Perfect. My dog ran through the screen and stretched it. I called and filled out service request. They called back and we scheduled the repair (service). Got a call today and they were here within 45 minutes. Quoted me a price (more than fair). They replaced the screen and it works perfectly. Really appreciate the professional team.Steve and Todd were the BEST."
William M on September 2022
When choosing a home improvement company for your home, Paramount Siding and Windows should be in the conversation. The foundation of our company has been built on fair pricing, quality of work, and a low pressure sales approach. We are a local company, not a franchise, and have served many families within our region. Our showroom is located in Littleton, CO. We have strong relationships with all of the top rated manufacturers in the business, which enables us to offer factory-direct prices along with great financing options. If you are looking into having a window or siding project done, give Paramount an opportunity to show you what we have to offer. You have no obligation to make an on-the-spot decision the day of the appointment. Our prices are as good today as they are tomorrow.
"Perfect. My dog ran through the screen and stretched it. I called and filled out service request. They called back and we scheduled the repair (service). Got a call today and they were here within 45 minutes. Quoted me a price (more than fair). They replaced the screen and it works perfectly. Really appreciate the professional team.Steve and Todd were the BEST."
William M on September 2022

Uncle Brian's Home Improvements
Uncle Brian's Home Improvements
Uncle Brian has 39 years of experience in the Home Improvement Industry and has completed thousands of jobs -leaving many customers not only satisfied, but feeling they received more than they were promised. Treating Clients as I would want to be treated is my philosophy in business and life in general. I have undertaken projects in various aspects of the Home Improvement business and specialize in Kitchen and Bathroom Remodeling, as well as the Installation of Interior and Exterior Doors. My strengths include (1) Finding Real Value and completing jobs with quality materials at a price I would be willing to pay! (2) Our slogan is "Getting it Done Right -the First Time" and this is the principle I use to bring Real Value to Each new Client. (3) I rarely ask for money upfront -unless I'm ordering Special Order Materials. (3) Simply stated, I enjoy making peoples' dreams a reality and making the process more of a pleasure than a hassle. (4) I come prepared to get your project complete with the experience and equipment necessary to get your project done right - the first time! I'm equipped to handle small to midsize projects that require Quality Results. Our specialties are Kitchen & Bathroom Remodels and Window & Door Installations. Each year we receive hundreds of requests for quotes that don't fall within our specialties. We provide free estimates for well over 100 projects per year, but we do not give free estimates to everyone that calls - for the following 4 reasons: 1. When our calendar is closed, we do not estimate new jobs. 2. We only supply free estimates to folks in our service area. 3. We decide which jobs to quote based on our prior commitments, manpower, and experience, among other things. 4. Our minimum labor for free estimates is $5,000. We Don't Work On RENTAL Properties, but if you're a landlord, we'd be happy to work on your primary residence. Due to federal regulations (EPA), we don't work on houses older than 1970. Thanks, Uncle Brian
"We hired Uncle Brian for two master bathroom remodeling projects. They are both beautiful, functional, and within budget, despite my lofty ideas. He gave us great advice, helped us with decision making ,and created bathrooms that look like they're out of a home magazine, but without the price tag. He is absolutely the best contractor we've ever worked with. Brian and his crew do thorough, excellent work and they clean up after themselves. Brian is very responsive with communications. He is transparent, honest, extremely hard working, and will be the first person we call for our next remodeling project."
Juli D on October 2020
Uncle Brian has 39 years of experience in the Home Improvement Industry and has completed thousands of jobs -leaving many customers not only satisfied, but feeling they received more than they were promised. Treating Clients as I would want to be treated is my philosophy in business and life in general. I have undertaken projects in various aspects of the Home Improvement business and specialize in Kitchen and Bathroom Remodeling, as well as the Installation of Interior and Exterior Doors. My strengths include (1) Finding Real Value and completing jobs with quality materials at a price I would be willing to pay! (2) Our slogan is "Getting it Done Right -the First Time" and this is the principle I use to bring Real Value to Each new Client. (3) I rarely ask for money upfront -unless I'm ordering Special Order Materials. (3) Simply stated, I enjoy making peoples' dreams a reality and making the process more of a pleasure than a hassle. (4) I come prepared to get your project complete with the experience and equipment necessary to get your project done right - the first time! I'm equipped to handle small to midsize projects that require Quality Results. Our specialties are Kitchen & Bathroom Remodels and Window & Door Installations. Each year we receive hundreds of requests for quotes that don't fall within our specialties. We provide free estimates for well over 100 projects per year, but we do not give free estimates to everyone that calls - for the following 4 reasons: 1. When our calendar is closed, we do not estimate new jobs. 2. We only supply free estimates to folks in our service area. 3. We decide which jobs to quote based on our prior commitments, manpower, and experience, among other things. 4. Our minimum labor for free estimates is $5,000. We Don't Work On RENTAL Properties, but if you're a landlord, we'd be happy to work on your primary residence. Due to federal regulations (EPA), we don't work on houses older than 1970. Thanks, Uncle Brian
"We hired Uncle Brian for two master bathroom remodeling projects. They are both beautiful, functional, and within budget, despite my lofty ideas. He gave us great advice, helped us with decision making ,and created bathrooms that look like they're out of a home magazine, but without the price tag. He is absolutely the best contractor we've ever worked with. Brian and his crew do thorough, excellent work and they clean up after themselves. Brian is very responsive with communications. He is transparent, honest, extremely hard working, and will be the first person we call for our next remodeling project."
Juli D on October 2020
FAQs for insulation service projects in Longmont, CO
When choosing a professional insulation installer, consider asking these questions to determine the best fit.
Will you address air leaks in my house?
Can you provide an R-value (heat resistance) fact sheet?
What kind of insulation will work best for my home?
How do you handle signs of a water leak?
Are you licensed and insured?
Can you provide customer references?
The best type of insulation for your home depends on what you need, so the answer will depend on your specific situation. If you’re building a house, structural panels are easy to install during the building process in addition to being the most energy efficient type. If you live in a warm climate, reflective insulation may benefit you more as it costs less than other insulation types. And for standard attics, loose-fill, spray foam, or blown-in insulation work well.
If you plan to heat or cool your garage, you’ll need to insulate the garage ceiling. Insulating your garage ceiling will make your garage much more energy efficient and save on heating and cooling costs. Not only does insulation make your garage more energy efficient, it helps reduce noise and can extend the life of your garage roof. You can use fiberglass, cellulose, mineral wool, or spray foam insulation for this project.
In some cases, you may not have enough insulation to properly regulate your home’s temperature. Watch for a few signs your home needs more insulation, such as:
High heating and cooling bills
Uncomfortable room temperatures
Ice dams on the edge of your roof
Roof leaks
Cold floors and walls
Freezing pipes
Temperature fluctuations
Visibly low insulation
Noise problems
Pest problems
On average, insulating an attic costs about $2,500, ranging from $1,500 to $3,500, depending on the insulation type, amount, and your attic’s accessibility. Additional cost factors include sealing air leaks, removal or replacement of insulation, and inspections. Types of insulation include:
Blown-in: $1–$4 per square foot
Spray foam: $2–$5 per square foot
Batt: $2–$4 per square foot
Structural insulated panels: $4–$7 per square foot
Loose-fill: $2–$5 per square foot
Reflective: $0.50–$1.50 per square foot
The Longmont, CO homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.

Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you.

How much does a radiant barrier cost? Our guide breaks down prices by type of barrier and size of your attic space.

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

Learning how to install insulation requires technique, patience, and safety training. Read our guide to see if it’s a DIY project you should take on yourself.

What is a radiant barrier? This reflective building material is designed to reduce heat transfer and save you money on energy costs.

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.
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