Bellwether Windows, Siding, & Doors of Colorado

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About Us

Based in Denver, we proudly serve the greater Colorado Front Range and mountain communities, including cities such as Aurora, Boulder, Colorado Springs, Fort Collins, and surrounding areas, even reaching into Cheyenne, Wyoming.. Reach out to us if you’d like a consultation, (303) 323-8578

About Us

At Bellwether, we’re Colorado’s top-rated exterior remodeling company specializing in fiber cement siding, energy-efficient window replacement, and custom entry doors. As the #1 James Hardie siding installer in Colorado, we help homeowners protect and beautify their homes with durable, weather-resistant materials built for Colorado’s unique climate.

Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service every step of the way. Our award-winning designs and certified installation teams ensure long-lasting value and stunning results.

We’re proud to serve the Front Range and beyond, helping families fall in love with their homes again.

Recent Work

2981 East 163rd Place ,Thornton, CO, US

2981 East 163rd Place , Thornton, CO, US
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6824 Olympus Drive ,Evergreen, CO, US

Installing new siding can significantly enhance the appearance and durability of a home. Here in Evergreen, CO, our team at Bellwether Windows, Siding, & Doors is skilled at providing top-notch siding services to protect properties from harsh weather. Our focus is always on delivering quality installations that add value and beauty to the client's home. By choosing us, customers benefit from a seamless process and end results that stand the test of time.

6824 Olympus Drive , Evergreen, CO, US
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  • Other Services
  • Other Services: Siding

Customer Reviews

See what our customers are saying — click any logo to read our reviews on that platform.

Bellwether Windows, Siding, & Doors reviews on Project Map ItBellwether Windows, Siding, & Doors reviews on Facebook
Craig Richardson — review for Bellwether Windows, Siding, & Doors
Craig Richardson - 9371 South Alcosta Place , Littleton, CO, US
We had a great experience with Bellwether. They were competitive on pricing and very high-quality in installation. Couldn't be more pleased. And, when time came for the inevitable punch-list of issues in a big, complex project at the end, they stood behind their work, resolved the punch list to my complete satisfaction. That's what we call integrity and character. Hard to find sometimes in this world. I would use Bellwether again and recommend them to my closest friends. As we say in the N... Read more
Rich Torres — review for Bellwether Windows, Siding, & Doors
Rich Torres - 2402 South Eagle Way , Aurora, CO, US
I was recommended to Bellwether from my family because I was impressed about the quality of Bellwether's work. Fast forward 6 months later, and Bellwether did my house.. From start to finish, I wouldn't have it any other way. Travis Towers with Bellwether was so awesome, professional, and all around a friendly person. Karen in financing works with you financially from beginning to end. Bellwether's prices are are so great, I ended up getting the fiber cement siding. Project manager Dylan and ... Read more
Sherri Veneziano — review for Bellwether Windows, Siding, & Doors
Sherri Veneziano - 2204 County Road 15 , Berthoud, CO, US
This was a huge project and I am so thankful we hired Bellwether! From the very beginning, my first phone call with Amy to schedule someone to come out to give us an estimate, which in itself was amazing because the house was all brick and no other company even wanted to come out and give us an estimate for siding until the brick was completely removed. I spoke with Amy and she said, no problem, we can come out right away...yea!! Then we met with Seth and he gave us an amazing estimate for th... Read more
John Savoy — review for Bellwether Windows, Siding, & Doors
John Savoy - 12933 Upper Ridge Road , Conifer, CO, US
Bellwether exceeded my expectations! From my first contact with salesman Steve Dennis and then Project Manager Paul Dickens, both listened and answered my questions and assured me the project would be done to my expectations. Well the day of the job 15 men showed up, headed by lead man Angel. His crew was so well orchestrated, they stripped the whole house of all cedar siding, wrapped and started siding the first day. The attention to detail was amazing and the house was fully sided with Hardie ... Read more
Katie Wood — review for Bellwether Windows, Siding, & Doors
Katie Wood - 1292 West Long Avenue , Littleton, CO, US
Overall, Bellwether is priced in the middle of the pack, they have quality workmanship and are incredibly fast. My siding was removed and replaced and painted in four days (compared to a neighbor's siding, where the other company took several weeks). It looks great! I had some issues with disorganized or missed communication, but after the project the owner sat down with me to discuss lessons learned so he could take that feedback forward. To me, that speaks to the companies dedication to qualit... Read more

Frequently Asked Questions

Denver homeowners choose us because we offer award-winning design and installation services, backed by decades of experience and numerous industry certifications. Our commitment to quality is reflected in our A+ BBB rating and our reputation as Colorado's #1 James Hardie siding installer.

We offer a comprehensive range of services in Denver, including siding installation, window replacements, and door installations. Our expert team is trained to provide high-quality craftsmanship that enhances your home's exterior.

Yes, we offer financing options to help Denver homeowners achieve their dream exterior renovations. Our flexible plans make it easier to invest in your home's future without breaking the bank.

We are deeply committed to the Denver community, providing high-quality exterior remodeling services that homeowners can trust. Our team is local, and we understand the unique needs of homes in this area, ensuring every project meets Colorado's specific climate challenges.

Bellwether stands out in the Denver market due to our award-winning designs, expert installations, and strong manufacturer partnerships, such as our status as a Pella Platinum Certified contractor. Our focus on quality and customer satisfaction sets us apart.