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  • Verified reviews icon147
    Verified insulation services reviews

Find Insulation pros in Boulder

Avatar for Guardian Home Energy

Guardian Home Energy

8932 West 81st Lane
5.00(
10
)
Approved Pro

Guardian Home Energy

8932 West 81st Lane
5.00(
10
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
136 local quotes requested

Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.

"They did fantastic work! Katherine that did the quote was very nice and knowledgeable. The guys who came in and did the actual work were very courteous and the work was well done."

Robert W on September 2025

Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.

"They did fantastic work! Katherine that did the quote was very nice and knowledgeable. The guys who came in and did the actual work were very courteous and the work was well done."

Robert W on September 2025


Avatar for Insulation Nation

Insulation Nation

4.78(
9
)
Approved Pro

Insulation Nation

4.78(
9
)
Approved Pro
Customers say: Quick response
28 local quotes requested
2 years of experience

Insulation Nation is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Dustin and Josh were great to deal with up front and stated they would do what I requested. After finishing the crawl space cleanout, it was noticed that the skirt doors were open and the cats were again in the space. I then hired someone to close up the openings. I crawled into the space which had a new vapor barrier and noticed that much insulation repair was not done as paid $500 extra for. Under the vapor barrier was very rough and bumpy and very hard to crawl on. they did not clean the rocks and cat messes up and the insulation was not repaired as promised and paid for.s I would not use them."

Rich J on October 2024

Insulation Nation is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Dustin and Josh were great to deal with up front and stated they would do what I requested. After finishing the crawl space cleanout, it was noticed that the skirt doors were open and the cats were again in the space. I then hired someone to close up the openings. I crawled into the space which had a new vapor barrier and noticed that much insulation repair was not done as paid $500 extra for. Under the vapor barrier was very rough and bumpy and very hard to crawl on. they did not clean the rocks and cat messes up and the insulation was not repaired as promised and paid for.s I would not use them."

Rich J on October 2024


Avatar for NetZero Insulation

NetZero Insulation

5463 S Datura St
5.00(
15
)
Approved Pro

NetZero Insulation

5463 S Datura St
5.00(
15
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 local quotes requested

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


Avatar for Precision Spray Foam

Precision Spray Foam

18530 Pinon Park Road
5.00(
9
)
Approved Pro

Precision Spray Foam

18530 Pinon Park Road
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

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


Foam Seal

123 Main St.
5.00(
1
)
Approved Pro

Foam Seal

123 Main St.
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
28 local quotes requested

We have the experience and dedication to get the job done right! Specializing in Insulation services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Great. Communication- promptness- quality of work- all great. Kyle is not afraid to do extra- such as moving things that were in the way. Extremely careful to not “overspray”. Thanks Kyle!"

Jerry H on November 2023

We have the experience and dedication to get the job done right! Specializing in Insulation services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Great. Communication- promptness- quality of work- all great. Kyle is not afraid to do extra- such as moving things that were in the way. Extremely careful to not “overspray”. Thanks Kyle!"

Jerry H on November 2023


Trust Us Insulation

5.00(
6
)

Trust Us Insulation

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Proper insulation is crucial in maintaining a comfortable more energy-efficient home or business, Insulation plays a vital role in regulating the temperature and comfort of your property so Don’t let poor insulation compromise your comfort of your home or property, We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave, here are some key factors why insulation matters. —Insulating Attic; : We can increase your attic’s current insulation needs and recommend the most effective solutions to create a much more comfortable environment such as blown-in cellulose or fiberglass insulation. —Wall insulation; Our crew can install or upgrade your wall insulation and are expertise in dense packing blown in cavities to improve your home’s energy efficiency and comfort —Crawl space; Our crew can recondition your crawl space properly insulating your crawl space can help prevent moisture issues, air drafts and improve the overall comfort of your home. Call or click to schedule an estimate today!

"Gio did a great job in insulating our pipes that freeze every time the temperature drops. The work was completed and the work area was all cleaned up excellently. We would highly recommend Trust Us Insulation."

Lou A on February 2025

Proper insulation is crucial in maintaining a comfortable more energy-efficient home or business, Insulation plays a vital role in regulating the temperature and comfort of your property so Don’t let poor insulation compromise your comfort of your home or property, We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave, here are some key factors why insulation matters. —Insulating Attic; : We can increase your attic’s current insulation needs and recommend the most effective solutions to create a much more comfortable environment such as blown-in cellulose or fiberglass insulation. —Wall insulation; Our crew can install or upgrade your wall insulation and are expertise in dense packing blown in cavities to improve your home’s energy efficiency and comfort —Crawl space; Our crew can recondition your crawl space properly insulating your crawl space can help prevent moisture issues, air drafts and improve the overall comfort of your home. Call or click to schedule an estimate today!

"Gio did a great job in insulating our pipes that freeze every time the temperature drops. The work was completed and the work area was all cleaned up excellently. We would highly recommend Trust Us Insulation."

Lou A on February 2025


Gary Kainz, LLC

13912 N 87th St
5.00(
1
)

Gary Kainz, LLC

13912 N 87th St
5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I provide renovation services, maintenance services, and general handyman home services to renters, homeowners, and light-commercial customers. I strive to provide quick, transparent, and honest communication to demystify the process of any project. My goal is to meet your goals in a timely, cost-effective, and sustainable manner - in order to deliver quality results that will last.

"Very well! We are thrilled with our new vanity. Though it’s the guest bathroom, I use it all the time now because it’s so beautiful and functional"

Angie H on August 2024

I provide renovation services, maintenance services, and general handyman home services to renters, homeowners, and light-commercial customers. I strive to provide quick, transparent, and honest communication to demystify the process of any project. My goal is to meet your goals in a timely, cost-effective, and sustainable manner - in order to deliver quality results that will last.

"Very well! We are thrilled with our new vanity. Though it’s the guest bathroom, I use it all the time now because it’s so beautiful and functional"

Angie H on August 2024


Walker Home Comfort

No reviews yet

Walker Home Comfort

No reviews yet

We are a local insulation company specializing in home comfort, we offer a wide variety of services from air sealing, blown in fiberglass/ cellulose, fiberglass batts and spray foam! With nearly two decades in the insulation industry our mission is to help homeowners with any budget become more comfortable in their home!

We are a local insulation company specializing in home comfort, we offer a wide variety of services from air sealing, blown in fiberglass/ cellulose, fiberglass batts and spray foam! With nearly two decades in the insulation industry our mission is to help homeowners with any budget become more comfortable in their home!


AR Insulations and Sprayfoam Inc.

5.00(
5
)

AR Insulations and Sprayfoam Inc.

5.00(
5
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Family owned business with over 3 years of experience handling all you Spray Foam and Insulation, Batts, Blow Cellulose insulation.

"The job went quite smoothly! No problems. The workers arrived on time, and finished the work in a timely manner!"

Jim F on September 2024

Family owned business with over 3 years of experience handling all you Spray Foam and Insulation, Batts, Blow Cellulose insulation.

"The job went quite smoothly! No problems. The workers arrived on time, and finished the work in a timely manner!"

Jim F on September 2024


Spectrum Contracting

830 Berthoud Peak Dr
No reviews yet

Spectrum Contracting

830 Berthoud Peak Dr
No reviews yet
10 years of experience

Our company offers a wide range of residential remodel and reconstruction services. With our skilled team of professionals, we are committed to bringing your vision to life and transforming your home into a place you love. Our comprehensive services include: 1. Interior Remodeling: - Kitchen Remodeling: Customized kitchen designs, cabinetry installation, countertop replacement, appliance upgrades, and flooring installation. - Bathroom Remodeling: Complete bathroom makeovers, including fixture replacement, tile installation, shower/bathtub upgrades, and plumbing updates. - Basement Finishing: Transforming underutilized basements into functional living spaces, such as entertainment areas, home offices, or additional bedrooms. 2. Exterior Remodeling: - Siding Replacement: Installation of new siding materials, such as vinyl, fiber cement, or wood, to improve curb appeal and enhance energy efficiency. - Window and Door Replacement: Upgrading windows and doors with energy-efficient options, enhancing security, and improving insulation. - Deck and Patio Construction: Custom deck and patio designs, installation, and refinishing to create outdoor living spaces for relaxation and entertainment. 3. Roofing Services: - Roof Repair: Fixing leaks, damaged shingles, or addressing other issues to ensure the integrity of your roof. - Roof Replacement: Complete roof replacement using high-quality materials and professional installation techniques to protect your home and enhance its appearance. 4. Landscaping and Outdoor Enhancements: - Landscape Design: Creating visually appealing and functional outdoor spaces with features like gardens, walkways, and lighting. - Hardscaping: Installing retaining walls, pavers, or stone pathways to add structure and beauty to your outdoor areas. - Irrigation Systems: Designing and installing irrigation systems for efficient watering of lawns and gardens.

Our company offers a wide range of residential remodel and reconstruction services. With our skilled team of professionals, we are committed to bringing your vision to life and transforming your home into a place you love. Our comprehensive services include: 1. Interior Remodeling: - Kitchen Remodeling: Customized kitchen designs, cabinetry installation, countertop replacement, appliance upgrades, and flooring installation. - Bathroom Remodeling: Complete bathroom makeovers, including fixture replacement, tile installation, shower/bathtub upgrades, and plumbing updates. - Basement Finishing: Transforming underutilized basements into functional living spaces, such as entertainment areas, home offices, or additional bedrooms. 2. Exterior Remodeling: - Siding Replacement: Installation of new siding materials, such as vinyl, fiber cement, or wood, to improve curb appeal and enhance energy efficiency. - Window and Door Replacement: Upgrading windows and doors with energy-efficient options, enhancing security, and improving insulation. - Deck and Patio Construction: Custom deck and patio designs, installation, and refinishing to create outdoor living spaces for relaxation and entertainment. 3. Roofing Services: - Roof Repair: Fixing leaks, damaged shingles, or addressing other issues to ensure the integrity of your roof. - Roof Replacement: Complete roof replacement using high-quality materials and professional installation techniques to protect your home and enhance its appearance. 4. Landscaping and Outdoor Enhancements: - Landscape Design: Creating visually appealing and functional outdoor spaces with features like gardens, walkways, and lighting. - Hardscaping: Installing retaining walls, pavers, or stone pathways to add structure and beauty to your outdoor areas. - Irrigation Systems: Designing and installing irrigation systems for efficient watering of lawns and gardens.

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Insulation questions, answered by experts

The thickness of floor insulation will depend on the R-value you plan to achieve. R-value varies on the type of material as well as its thickness and density. Insulation materials with low R-values can be layered to match the value of denser materials. As long as your floor insulation is packed tightly, seals the area from drafts, and doesn’t prevent ventilation, it can be as thick (or thin) as you need.

In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to keep your crawl space dry.

As long as your existing insulation isn’t compromised, you can add new insulation directly over them. Inspect your insulation thoroughly and make any minor repairs. Then, add new insulation on top of it. You must be completely certain that there is no contamination or mold growth before doing so. That said, when unsure, consider removing old insulation and lay down fresh ones.

If you’re a savvy DIYer around the house, own the basic tools, and have enough time on your hands, you can definitely install fiberglass insulation yourself. Doing the work yourself will certainly keep overall insulation costs down. However, if you’re not confident in your handy skills around the house, call in a professional.

Reduces energy costs, improves comfort, and prevents ice dams in winter.

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The Boulder, CO homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.