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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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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Les Lippold - 355 East 112th Drive , Northglenn, CO, US
Josh was very easy to work with and price was great. James Hardie siding installation was done flawlessly and on time . Installers were easy to work with and done a great job. Highly recommend for anyone looking to have James Hardie siding installed.
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Katie Fahrland - 3370 South Marion Street , Englewood, CO, US
I had an execwexce experience with Aaron, Paul, and Katelyn at CO Siding Repair. They were very professional and communicative. The house looked like new when they finished and they even came back to touch up a few small things. The work was completed faster than expected too.
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Travis Baca - 1645 South Yukon Court , Lakewood, CO, US
The team at CSR was outstanding to work with! They handled every question we had during the process and made sure it was taking care of. Their crew knows was timely and professional. Definitely a must hire for any siding repair needs.
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Jake LaMont - 2557 Cherry Circle , Brighton, CO, US
Colorado Siding Repair resided our home in December 2020. Their crew did an amazing job in a timely manner. They were very nice, thorough and respectful. Cash gave us a very competitive price to do the work and their people went above and beyond expectations with overall performance, daily and final cleanup. They did exactly what they said they would do for the cost proposed, as well as identify any additional costs that may incur up front to avoid surprises. I would recommend Colorado Siding Re... Read more
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Patty Sible - 611 Elizabeth Avenue , Platteville, CO, US
I highly recommend Colorado Siding Repair for their high quality product, quick responsiveness, very competitive pricing & top notch professional staff. When I contacted Colorado Siding Repair, David promptly visited our home to review the siding work that was needed. He explained in detail the reason we were seeing our siding issues & offered some advice to prevent these issues going forward. When sending the quote he offered two options, instead of telling us we needed to replace the siding on... Read more