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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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

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Lindsay L
Since we moved into our home four months ago, we have been making lots of improvements to the house. We’ve worked with about eight companies of various trades, and our experience with Colorado Siding Repair has been the best of them all. Our new siding is durable, low-maintenance, and beautiful, and the whole process from design to completion was honestly a pleasure. The entire team is amazing—cofounders Cash and Paul are passionate, creative, and responsive; project coordinator Katelyn is knowl... Read more
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Miriam T
I highly recommend Colorado Siding and Repair. Cash was great to work with. He met me on time and spent a long time discussing the project and going over options. The quality of the siding is great and I've gotten a lot of compliments on how the house looks now. The whole team was communicative throughout the process and worked to accommodate my schedule. Paul went through everything with me on the final walk through to make sure I was happy and kindly had someone come back to put up my house nu... Read more
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Bruce Kaiser
We have used Colorado Siding Repair on two separate projects to replace worn siding with weather resistant hardy board siding. They were timely and very complete with their recommendations resulting in outstanding results in upgrading our house wrapping, trim and flashing installation and paint work. I will use them again on future siding work.
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Keegan Deignan
Cash and the rest of the crew did an incredible job with my recent siding repair and paint job. I would highly recommend them to anyone looking for professional and reliable siding work. They communicated through every step of the process, and made sure I was happy with the work that was completed.
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Anna Hamp
Cash, Paul, Katelyn, and the entire team at Colorado Siding Repair were professional, courteous, and responsive. Our most recent project was finished even faster than we had anticipated. Since we were on a tight budget, they worked with us to replace the siding on one side of the house at a time. We really appreciate their beautiful work (see before and after photos below) and can't wait to have them finish the last wall of our house soon.