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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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
Donna Gordon — review for Bellwether Windows, Siding, & Doors
Donna Gordon - 7481 Exeter Court , Castle Pines, CO, US
Bellwether did a great job of replacing the siding on our home with pre-primed Hardie board in Castle Pines. The siding looks perfect and the detailing was done with precision. We couldn't have been happier with the responsiveness of the company to any questions or concerns we might have and the crew worked well to complete the project in a timely fashion. It was a pleasure to work with the administrative staff, too. There was always a friendly and helpful voice on the other side of the line ... Read more
Dan Rowe — review for Bellwether Windows, Siding, & Doors
Dan Rowe - 133 South Sherman Street , Denver, CO, US
My project was very unique. I only needed to replace my gables and side a shed to match. I had 5 different quotes and Bellwether was the only reasonable one that was eager to do the job. I couldn't be happier with how it came out. It was such a small 4-day project and they worked outside of their comfort zone on my unique shed situation (4 doors and swing-in window). Thank you so much for doing the great work at a reasonable price!
Rich Fisher — review for Bellwether Windows, Siding, & Doors
Rich Fisher - 684 South Galena Street , Denver, CO, US
Bellwether is a reputable and responsive company with highly professional construction experts who will expertly advise you on your project. I highly recommend Bellwether for your home project.
Dustin Centofanti — review for Bellwether Windows, Siding, & Doors
Dustin Centofanti - 4059 Histead Way , Evergreen, CO, US
Bellwether did a James Hardie siding installation. From helping figure out design to communicating on pre-job walk through to getting the job done they did excellent. Their crews have a great eye and attention for detail. You can tell they install the siding to manufacturer specification and take pride in their work. Finally I found the project manager to really care about customer satisfaction - they made sure to take care of final little details to make sure the job was fully complete and done... Read more
Sara Gonzales — review for Bellwether Windows, Siding, & Doors
Sara Gonzales - 824 Powderhorn Drive , Fort Collins, CO, US
I had a great experience with Bellwether for replacing all the siding on my home in November 2023. It was a major project, that came together beautifully! I’m so pleased with the final product, the excellent service I received, the attention to detail and getting the project done right on schedule. I especially appreciated Paul as my project manager-he was SO responsive anytime I texted him a question. There were a couple of minor hiccups in the process, but Paul addressed them very quickly,... 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.