*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 March 27, 2025
Serving Longmont, CO and surrounding areas
Approved
In business since 2023
Free estimates
Warranties offered
"We were very impressed with Insulation Nation’s professionalism, promptness, cleanliness and the incredible results we have experienced from the job they did in our attic. They made the process very easy at a reasonable price and we would strongly recommend them!"
+1
Serving Longmont, CO and surrounding areas
Free estimates
Credit card accepted
"We had existing attic insulation removed and new insulation blown in. Net Zero's staff was extremely professional. They did a great job and cleaned up afterwards, and left the house cleaner than when they began. I would definitely recommend them. They are one of the few companies who offer financing as well."
Serving Longmont, CO and surrounding areas
In business since 2006
Free estimates
Emergency services offered
"They installed blanket insulation on my concrete basement walls and air gapped the rim joist. I’m very satisfied with the quality and efficiency of their work."
+10
Serving Longmont, CO and surrounding areas
In business since 2013
Free estimates
Warranties offered
"Very happy with the entire process. I would recommend Guardian to anyone looking for insulation."
Serving Longmont, CO and surrounding areas
In business since 2017
Free estimates
Credit card accepted
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.
+6
Serving Longmont, CO and surrounding areas
In business since 2013
Free estimates
Emergency services offered
"Excellent. Jose was very flexible, efficient, honest, clean and fairly priced. I would trust him for any insulation project you may have."
+5
Serving Longmont, CO and surrounding areas
In business since 1995
Free estimates
Emergency services offered
"Very professional, and showed up on time. He actually put in a little more insulation than needed so that when it settled it would have the R-value that I required. Worked very efficiently, and cleaned up well."
Serving Longmont, CO and surrounding areas
In business since 2010
Free estimates
Emergency services offered
"Amazing service from start to finish I love the customer service they provide great Conversation that was very professional they show me pictures before enough though offer me a wall and thre Conversation that was very professional they show me a before and after pictures of my ducts and attic my dryer was completely clogged and they was able to get everything out , my house used to get so hot becouse of my low insulation and now I can really feel the difrence it's much cooler and feel great . And the best thing Thst make me feel very comfortable with them that they left me a 5 year warranty for everything they performed , highly recommended!"
Serving Longmont, CO and surrounding areas
In business since 1984
Emergency services offered
Credit card accepted
"Responsive, dried carpet and stretched it., dried downstairs drywall. Thought they would clean carpet, but must have misunderstood. This is my second review tor the same serviace."
Serving Longmont, CO and surrounding areas
In business since 2003
Credit card accepted
"Really well. Couldn't have been happier. No pressure to get anything done that wasn't necessary."
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
From average costs to expert advice, get all the answers you need to get your job done.
New insulation makes your home more comfortable and boosts energy efficiency. Use this guide to budget for insulation installation costs in Denver, CO.
The cost of blown-in insulation in Denver, CO varies depending on the type of insulation, labor, prep work, and more. Learn more about the cost factors in this guide.
Your attic insulation removal cost in Denver, CO varies based on multiple factors, including why you're removing it and how easy it is to complete the task.
Poor insulation in your house means a less comfortable living space and higher energy bills. Use this guide to diagnose issues with your insulation.
If you need to add insulation to your home, you’re likely wondering, who installs insulation. Learn why it’s best to hire an insulation pro for this project.
How much does insulation save on energy bills? It depends on where you live and the type of insulation you install.
