The entire process, from proposal to completion, was a breeze. My home looks beautiful, and I am secure in knowing that the new siding installed by Bellwether is superior to the one it replaces.
Michelle Bailey
Bellwether Windows, Siding, & Doors
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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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.
Check out some important pages from our company's website:
- Siding
- Windows
- Multifamily Siding Replacement
- Stucco Removal
- Insulation
- Decks
- Roofs
- Remote Sales Estimates
- Bellwether Referral Rewards+
- Exterior Design
- Free Online Quote
- Financing
- Blog
- FAQs
- About Us
- Contact
Read what 190+ clients have said about our services:
Our Work
355 East 112th Drive , Northglenn, CO, US
- HardiePlank Select Cedarmill Siding
- HardiePlank Select Cedarmill Siding: Trad Red
- Other Services
- Other Services: Siding
274 Washington Street , Golden, CO, US
- HardiePlank Select Cedarmill Siding
- HardiePlank Select Cedarmill Siding: Monterey Taupe
- Other Services
- Other Services: Siding
10238 Andee Way , Littleton, CO, US
- HardiePlank Select Cedarmill Siding
- HardiePanel Select Cedarmill Siding: Primed
- Other Services
- Other Services: Siding
Harlan Street , Westminster, CO, US
- Norandex Woodsman Select Siding
- Norandex Woodsman Select Siding: Olive
- Other Services
- Other Services: Siding
3370 South Marion Street , Englewood, CO, US
- HardiePlank Select Cedarmill Siding
- HardiePanel Select Cedarmill Siding: Boothbay Blue
- Other Services
- Other Services: Siding
Customer Testimonials
** Update on review **
The owners of Bellwether reached out to me about this project and came on-site to review. They agreed that there were multiple areas that needed to be addressed and worked with a new project lead to get those noted and planned. A different crew came out and re-did these areas to a much higher quality at no cost to me.
Overall I am happy with how they addressed this situation and have updated my review to 4 stars.
** Initial Review **
We used Bellwether for a project that... Read more
Scammy unsolicited calls and text messages. Real companies don’t need to harass everyone. They’re good enough word of mouth and good reputation will find them work.
I really did not want to write a poor review for this company, however it is a disservice to the public to not be transparent. We had problems from beginning to end.
I can not fault the actual siding crew for anything as most problems occurred from the management of the crew. We had windows trimmed out incorrectly, as the home owner, because there was no one on site managing what was going on, I had to intervene to have this corrected using google translate to communicate with the crew.
There... Read more
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