Roof Worx
“We also replaced all gutters at the same time as the roof, and when we had an issue 18 months later with one of the gutters, they came right out and fixed it - no charge.”
Best Siding Contractors in Thornton, CO
24 companies listed · 6 in Thornton · 4 open 24/7 · 13 open weekends · 23 rated 4.5+
Data verified October 27, 2026
Kelly Construction
“Very pleased with the customer service, clean up of the work crew, respect for my customers that kept coming and going all day, and overall value for the excellent work that they did.”
Sky Manor Roofing & Exteriors
“I was also very pleased doing business with Henry as he is incredibly informative, knowledgeable and answered every single phone call without hesitation.”
MTN Roofing
“Everything from getting the roof damage and repairs approved with the insurance company to the excellent 1 day installation and top quality installation.”
Ultimate Exteriors
“Big shout out to Drew and Don for the instalation and Dan for answering all my emails, questions and dealing with our indecisiveness when it came to choosing a color.”
Carlson Siding & Construction
“Being extremely pleased with the outcome and end results of our experience with Carlson Siding and Construction, we felt compelled to write this review.”
Listed for homeowners in and around Thornton, CO, these 24 companies work on exterior walls. Details about materials, color ranges and fade cover are drawn from each company's own site, and the review quotes underneath are public reviews.
Area overview: Thornton, CO
Of the 24 companies we list here, 6 are in Thornton itself and 18 come from towns including Denver (6, 11 mi), Golden (2, 19 mi) and Federal Heights (1, 4 mi). The companies on this page are rated from 4.4 to 5.0 across 3,264 reviews; 19 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise responsiveness (91%), quality (88%) and professionalism (83%). 4 are open around the clock; 12 are open on Saturdays and 8 on Sundays. The services the companies on this page list most often on their websites are commercial roofing (6), siding (6), residential roofing (5), gutters (4) and roofing (4). 3 show a license on their websites and 13 have a BBB rating of A or A+. Domain records put 16 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 4 offer emergency call-outs; 7 offer financing or payment plans; 13 give free estimates; 6 are family- or locally-owned and 2 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
How many of these companies publish a website?
Websites are listed for all 24 companies on this page. For wall work the site is worth opening, because photographs of finished houses in the same climate tell you more than any description. Look for jobs with the same material you are considering, and for pictures taken from close up rather than across the street.
Synergy Roofing and Solar
“Very satisfied with their work and highly recommend!”
K&G Window Pros
“The sound difference alone is vastly noticeable but ive already noticed within a few hours of the windows being installed my furnace hasnt needed to kick on nearly at all to keep the house stable and warm.”
Native Roofing and Construction
“I contacted a couple local roofing companies and not only did Native Construction come back with the fastest response time, it was a fair price and they held to the price after it was all said and done!”
Colorado Superior Roofing & Exteriors
“The work was done last week and the crew did a GREAT job, the roof looks great, they did a great job of cleaning up, and the follow-up has been fantastic!”
Axe Roofing
“Kyle answered all of my questions and helped me to understand the insurance paperwork while Braden had great communication with me on schedule changes.”
Academy Roofing
“These folks completed a substantial roof repair project at our home recently and were absolutely the most professional organization we have dealt with in a long time.”
Gold Star Premium Roofing
“Had my roof replaced after a wicked storm, Caine and the whole team did a great job on the roof and helped me understand the insurance process through my first claim.”
J&K Roofing
“They also had contractors replace the gate to my back yard, replaced vinyl siding on the front of the house, and replaced the garage, aii for what the insurance company had awarded us.”
Bear Brothers Roofing
“Had a beautiful time beautiful people great experience I'll definitely recommend to all my friends and family want to give a shout out to my little man Summit”
Roper Roofing & Solar
“When Brad arrived he explained everything he was going to do before do it and then meet with me when he was done with the inspection and showed me pictures of what he saw.”
Tiley Roofing
“The weathervane blew off in high winds this week, and I called suggesting one of their guys might want to stop by on his way home and put it back for extra money.”
1st Priority Roofing
“1st Priority did a great job to make our roofing and gutter installation seamless and I appreciated their help throughout the process and would recommend them to a friend or family in the future.”
Ernie's Roofing
“I contacted Ernie a couple of weeks ago and had my gutters and leaf guards installed yesterday, within about two weeks from initially contacting him, They look very nice and he made a slight modification to the gutter system which should make them ...”
New Roof Plus
“We worked with Greg in the process of buying a home and he was wonderful working through the process and in between communications of the seller and us.”
Woodberg Roofing and Restoration
“Jamey came out and from start to finish made me feel like I was being taken care of and explained everything would recommend them they came out when they said and got it done in a timely manner.”
Above All Roofing
“I have not had an insurance claim that I have used them for personally but Aaron came out to my property to do a free inspection on my roof after I saw some shingles blow off.”
Pioneer Home Solutions
“I know coordinating the work schedule was difficlut for Pioneer due to my travel requirements and I thank Spencer, Carlos and Pioneer for their understanding.”
Elite Roofing and Solar
“In a week's time the issue was resolved (flashing was installed incorrectly), repaired the damage from the leak and didn't have any other issues since.”
Why these companies made our list
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