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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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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Michael Adkins - 13672 West Bates Avenue , Lakewood, CO, US
Awesome work by Colorado Siding Repair! Cash looked at my siding and gave me several different price options to work with my budget. I am selling my house and CSR moved me up in their schedule on short notice so I was able to stay on track to put my home on the market in early February.
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Tracy Ramsey - 6341 North Dunkirk Court , Aurora, CO, US
I called Colorado Siding Repair because of some loose siding and just needed someone to reinforce it. My concern was that what I needed done would be too small of a project for any siding company and that they would try to upsell. Well, I didn't need to worry.. Josh, one of the owners, came to my home to give an estimate, and without hesitation said they would be happy to do the work AND at a fair price, putting my mind at ease! They were very thorough, checking all the siding and reinforcing a... Read more
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Peter Emerson - 3653 East 133rd Court , Thornton, CO, US
Cash and his crew did a great job on my house. They performed the work at a very competitive price and went above and beyond in completing the job to our satisfaction. Both cash , his scheduler, and the lead installer communicated with me throughout the process by phone at work and through scheduled meetings. I have experience in construction and would highly recommend Colorado siding repair
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Rob Butts - 916 Meade Street , Denver, CO, US
Great experience, no complaints. They installed new siding on my house, installation was fast and professional, new siding looks great.
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Nate Reed - 4701 East Iliff Avenue , Denver, CO, US
Josh and Tanisha run a tight ship. I’m pleased with their ability to get our project completed on budget and on schedule. We had a huge 18 unit siding replace of our townhomes and they were better than I could have expected. Trusting these guys was a great choice. Will do my work again and highly recommended!!