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.”
Best Insulation Contractors in Westminster, CO
24 contractors listed · 6 in Westminster · 2 open 24/7 · 10 open weekends · 22 rated 4.5+
Data verified October 28, 2026
New Line Roofing
“I had a leak in my roof and had 3 other companies come look at it, and they all wanted to do a full replacement claiming they could get it covered with hail damage.”
AA Insulation LLC
“Gary and Josh operated very quickly, effectively, and cleaned up after it was done (roughly 1hr).”
Elite Insulation Contractors Westminster
Atlas Roofing Inc.
JCJ Insulation Llc
“I had insulation blown into the attic, This was a quick turn around time from scheduling my appointment, They were able to meet my schedule and on time.”
The 24 contractors listed for Westminster, 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: Westminster, CO
6 of the 24 contractors we list are based in Westminster; the other 18 serve Westminster from towns including Denver (13 mi), Lakewood (13 mi) and Broomfield (5 mi). 23 of the contractors on this page have a rating, from 4.4 to 5.0 across 3,904 reviews; 17 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise responsiveness (87%), quality (87%) and professionalism (84%). 2 are open around the clock; 10 are open on Saturdays and 5 on Sundays. The services the contractors on this page list most often on their websites are residential roofing (5), commercial roofing (3), commercial roofing services (2) and painting (2). 1 shows a license on its website; 3 list staff certifications (GAF and BPI) and 16 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 48 years. 2 offer emergency call-outs; 8 offer financing or payment plans; 13 give free estimates; 9 are family- or locally-owned and 2 list 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 23 of the 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.
Colorado Superior Roofing & Exteriors
“They offered for us to choose a new color, met the claims adjuster at the house so I didn't have to, and worked tirelessly on my behalf to jump through insurance hoops and get me paid.”
Axe Roofing
“Prior to finding Axe Roofing, we had spoken with two other local roofing companies and had serious reservations about both (one tried to coach us on lying to our insurance company, and neither responded to requests for references and proof of insuran...”
Angelo & Sons Doors & More
“They were on time, friendly, respectable to my home, and even gave me a referral to someone they had recently done business with, as they seen I was in the middle of a remodel.”
Ameritech Windows
“He was excellent at explaining to us the differences between the various brands and types of windows, and truly educated us throughout the entire time.”
Bold Brothers Roofing
“From day one of roof inspection from wind and hail damage, Jake was working for me with being there with the insurance inspector to following up on roof replacement, solar removal and reinstalling and gutter replacement.”
Academy Roofing
“I had a problem the other day locating a roofing accessory for a low slope roof and I called up Curt, the owner and he helped me out, so I could finish up my roof repair the correct way.”
J&K Roofing
“The entire process from roof and gutter inspection to the repair quote to working with our insurance company to roof and gutter replacement to cleanup was very painless.”
Roof Worx
“Roof Worx is a very professional company, they have a great video of what to expect when they come to replace a roof and it set expectations perfectly and they followed through on what they said they would do for us.”
Ernie's Roofing
“When heavy March snow put my pergola at risk of collapse, Ernie spent time to research my exact structure and manage to arrange for someone to come out in the middle of the night (after 1 am still answering calls himself.”
Boulder Roofing
“I live in a townhouse with two other roofs that connect to mine and he was willing to coordinate between us in order to save each of us money which I really appreciated!”
Red Diamond Roofing
“Red Diamond worked tirelessly with my insurance company, met with their assessors, prepared reports, and educated them on local roofing codes, until my entire roof was also covered.”
Titan Applicators
“Answering questions on projects, and showing up on time so things can keep moving a critical in today's construction environment and the guys at titan will keep you on schedule.”
Ideal Home Energy
“From the audit, a number of areas were identified for improving energy efficiency and we had the insulation work completed this month by technicians Aaron and Jeremiah.”
Reenergizeco
“Initially we reached out to R Eenergize CO for only an energy audit, but found them so trustworthy and enjoyable to work with that we ended up using them for almost their entire suite of services (windows, insulation, solar installation).”
Rosner Roofing
“Our insurance was a bit of a headache to get the roof approved but Mike came out and did an extra inspection at the insurance's request and really helped the approval along.”
Refined Exteriors
“From the initial contact with them to the final nail being driven, this team worked with a level of professionalism, dedication, and realism that I was not expecting from a roofing company.”
Core Roofing + Solar
“Our adjuster even missed a couple of items that needed to be taken care of and Core's estimating team made the insurance company aware of this and received approval to complete these items.”
PRQ Exteriors
“I also like the fact that they're based in Golden, so they know the ropes here in Colorado and they're not going to disappear overnight like some others I've dealt with.”
Why these companies made our list
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