Boulder Roofing
“Jesse, the project manager, communicated with me throughout the entire process, advising me in the decision making when needed and including me in all aspects of the project.”
Best Insulation Contractors in Boulder, CO
24 contractors listed · 4 in Boulder · 1 open 24/7 · 10 open weekends · 23 rated 4.5+
Data verified October 27, 2026
Black Roofing & Waterproofing
“Not only did the guys show up on time and complete the work in a timely manner; they covered all of our stuff in the garage and did a full cleanup when they left.”
Eco Handyman
“They gave me the most complete and thorough bid to have more attic insulation blown, Radon mitigation, as well as a vapor barrier and insulation added to my crawl space.”
Roof Masters
“She clearly knew her business and went out of her way to work with me and give me an honest and fair estimate of what it would take to make the roof integral.”
Axe Roofing
“They assisted with getting the insurance claims filed and processed, as well as doing a great job on roof replacement and clean up after their work was complete.”
Bulldog Roofing
“Clay spent the time to explain the process, take detailed photos, meet with the insurance adjuster, and point out the hail damage not only on the roof, but also non roof-related damage on our property.”
The 24 contractors listed for Boulder, CO insulate attics, walls, crawl spaces and rim joists. Details under each one about materials, hours and the services advertised are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Boulder, CO
4 of the 24 contractors we list are based in Boulder; the other 20 serve Boulder from towns including Longmont (13 mi), Broomfield (12 mi) and Denver (27 mi). The contractors on this page are rated from 4.2 to 5.0 across 3,910 reviews; 17 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise quality (88%), responsiveness (85%) and professionalism (84%). 1 is open around the clock; 10 are open on Saturdays and 3 on Sundays. The services the contractors on this page list most often on their websites are residential roofing (4), commercial roofing (3), spray foam insulation (3), insurance claims (2) and roof coating (2). 4 show a license on their websites; 1 lists staff certifications (GAF) and 9 have a BBB rating of A or A+. 14 have ten or more years of experience, the longest 46 years. 1 offers emergency call-outs; 12 offer financing or payment plans; 16 give free estimates; 12 are family- or locally-owned and 1 lists coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
How many listings here have a website?
A website is on file for all 24 contractors here. Use it to see which materials they actually install, since a firm that only sprays foam will recommend foam. A contractor with no site is not automatically worse, but you will have to ask on the phone what the site would have told you.
Ameritech Windows
“We realized the other night after opening this window for the first time, it's because there is a small gap up top and the window doesn't quite fit the frame.”
Colorado Roof Toppers
“Living in Northern Colorado with the hail we can get, I've had some experience with roofing contractors and my only wish is that I had tried Colorado Roof Toppers first!”
Westpro
“They guided us through the insurance process and kept us fully informed as we worked through the local shingle shortage due to the extent of that storm.”
Greenpoint Roofing
“Andrew Snyder and crew are best in class going above and beyond to serve and contribute to the Longmont community from toy drives at the holidays to blood drives to community events.”
Roof Worx
“From that point, Roof Worx worked directly with our insurance company and was able to get them to completely cover the cost of replacing the roof on our house and barn.”
Red Diamond Roofing
“Alan at Red Diamond Roofing met with me to discuss options for roof repair and replacement and he and his team helped me after my roof was damaged during a storm.”
Rosner Roofing
“Helped walk us through the daunting process, allaying any fears or apprehension with solid knowledge of products, permits, instillation and technical know how.”
Roof Check Inc
“Amazing attention to detail and doing whatever was necessary to go above and beyond on my new roof to make me happy, amazing clean up afterwards and very professional all round, Patrick and Sean were amazing to work with.”
Rocky Mountain Roof Doctors
“They listened to our concerns about drainage, especially having a flat roof and added a second layer to the gutter system to address this and the gutters.”
Arrow Roofing and Exteriors
“Jacob was on prompt, knowledgeable and detailed to assess, interface with insurance adjuster, and manage the multiple roof repairs we needed in a short window of time.”
CIG Construction
“Kelly fought long and hard with our insurance company to make sure all the code upgrades and extras the roof needed to comply with current codes we done.”
Rooftec Precision Exteriors
“I contacted several roofers but Roof Tec won my business for their professionalism and friendliness in their presentation, and they got the job done with my total satisfaction.”
Francia's Painting LLC
“Francia's agreed to take on the most difficult job for a painter, repair and repaint of a multistory home that had been "repaired" and "painted" very badly.”
Koala Insulation
“Our AC & heater were running nonstop the past year until we made this improvement, now we can easily keep our whole home a comfortable temperature without spending so much on utilities.”
Red Rock Roofing
“We had some hiccups along the way, but I was able to work with Stevan and ultimately he addressed our concerns and we feel like we were treated fairly.”
Rise Construction
“We were referred to Rise Construction from our neighbor who had his roof replaced and said they were very happy with the work Rise Construction did for them.”
Advanced Insulation Solutions
“(no wonder it was freezing in there) But now that all the work has been completed, we no longer need space heaters in those spaces and everything is just more comfortable!”
Storm Contracting Solutions
“My house was literally turning into the Fight Club House every time it rained and the other bids were super high for normal shingles, to say nothing about the stone coated stainless steel that SCS uses.”
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
