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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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
  • HardiePlank Select Cedarmill Siding: Evening Blue
  • HardiePlank Select Cedarmill Siding: Night Gray
  • HardiePlank Select Cedarmill Siding: Mountain Sage
  • HardiePlank Select Cedarmill Siding: Timber Bark
  • HardiePlank Select Cedarmill Siding: Aged Pewter
  • HardiePlank Select Cedarmill Siding: Iron Gray
  • HardiePlank Select Cedarmill Siding: Cobblestone
  • HardiePlank Select Cedarmill Siding: Gray Slate
  • HardiePlank Select Cedarmill Siding: Arctic White
  • HardiePanel Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Light Mist
  • HardiePlank Select Cedarmill Siding: Khaki Brown
  • HardiePanel Select Cedarmill Siding: Cobblestone
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
151 West Sycamore Lane , Louisville, CO, US
  • HardiePlank Smooth Siding
  • HardiePanel Select Cedarmill Siding: Primed
  • Other Services
  • Other Services: Siding
  • HardiePlank Smooth Siding: Primed
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Aged Pewter
1029 North Garfield Avenue , Loveland, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Arctic White
  • Other Services
  • Other Services: Siding
  • HardiePlank Select Cedarmill Siding: Arctic White
5358 East Costilla Drive , Centennial, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Arctic White
  • Other Services
  • Other Services: Siding
  • HardiePlank Select Cedarmill Siding: Arctic White

Customer Testimonials

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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
CSR was very responsive, I called for an estimate on residing my home & to my surprise David showed up the next day to look at the job. Unlike a previous company I contacted for an estimate who said I needed to replace all the siding on my house for $50,000, David informed me I only needed to replace the siding that was damaged on the front and the other three sides could be painted. This was wonderful news & I hired CSR. It was very refreshing to have an honest person explain to me the problem,... 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
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Dave and Bev Henke - 18284 East Berry Drive , Centennial, CO, US
Excellent products, professional and knowledgeable staff, competent crews, fair pricing.
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Tyra Vickers - 8070 South San Juan Range Road , Littleton, CO, US
Steve Dennis and his team at Bellwether did an amazing job replacing the siding on my entire house. They were fast, efficient and thorough. I highly recommend Bellwether to anyone needing siding work.