Take a look at our past work!

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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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:


Read what 190+ clients have said about our services:

Our Work

1555 West Thomas Avenue , Englewood, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Boothbay Blue
  • Other Services
  • Other Services: Siding
  • HardiePlank Select Cedarmill Siding: Boothbay Blue
199 County Road 8038 , Fraser, CO, US
  • HardiePanel Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Rich Espresso
  • Other Services
  • Other Services: Siding
  • HardiePanel Select Cedarmill Siding: Rich Espresso
1555 West Thomas Avenue , Englewood, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Aged Pewter
  • Other Services
  • Other Services: Siding
1555 West Thomas Avenue , Englewood, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Timber Bark
  • Other Services
  • Other Services: Siding
1555 West Thomas Avenue , Englewood, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Timber Bark
  • Other Services
  • Other Services: Siding

Customer Testimonials

Reviewer photo
Julie May
I contacted Colorado Siding Repair knowing we would need a full replacement. Cash was so helpful, he spent 2 hours with us during our initial meeting at our home. He gave us great ideas and really listened to our concerns. What began as a necessary project, turned into an exciting transformation. We LOVE how our house turned out and are still shocked at how good it looks now! Everyone at Colorado siding repair was great to work with. Katelyn was responsive and extremely helpful, the crews ... Read more
Reviewer photo
Office Account
Colorado Siding Repair has been our go to siding company when our customers need work done. Customer service is top priority for us and we’ve been able to fully entrust our clients to CSR on big projects to small repairs. We will continue to send work their way and you should too! - TSV Construction and Roofing, Inc.
Reviewer photo
Michael Regier
Josh is awesome. He is nice and very helpful.
Reviewer photo
Kristen Puffer
Had to have some siding repaired at my home, these guys came highly recommended and did not disappoint! Beautiful job and fit me into their schedule quickly.
Reviewer photo
Linda Hess
Such a amazing experience! I have not always been lucky with contractors, but Josh and the rest of the team from Colorado Siding Repair were always so prompt and helpful! I was not able to move forward at this time, but will ABSOLUTELY be calling them in the future for my siding project.