Bellwether resided my home and I can’t recommend them enough. Great customer support, friendly and professional workers.
Ben Moses
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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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:
- Siding
- Windows
- Multifamily Siding Replacement
- Stucco Removal
- Insulation
- Decks
- Roofs
- Remote Sales Estimates
- Bellwether Referral Rewards+
- Exterior Design
- Free Online Quote
- Financing
- Blog
- FAQs
- About Us
- Contact
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
I was paid to remove my old review but I had a new issue come up because of their neglect and over promised and under delivered service...when Seth came to the house for our consultation I asked multiple times if they would be removing the old insulation he assured me they would which somehow didn't make it into the itemized list along with a window which is how they got the bid...anyway the crew stripped my house down when I asked why they weren't taking the old insulation that the paper had st... Read more
When we decided to replace all of our home's windows, we talked to a number of window contractors at the annual home and garden show. We really liked the folks at Bellwether and decided they were who we wanted to do business with. They did not disappoint. From the sales and bidding process through the installation, Bellwether was nothing short of excellent in their performance. I've dealt with a lot of contractors over the years while my wife and I remodeled our large 1997 fixer-upper. Wind... Read more
The Bellwether team provided excellent services throughout the process of developing and carrying out our fire-resistant (James Hardie) siding project. Teri on the sales side was very responsive and happily answered all of our questions. Dennis and the installation team communicated the requirement of our project well and did an impeccable job with the installation. We didn't even find anything to put on a punch list after they were done. Karen was patient and flexible -- a pleasure to work with... Read more
Workmanship on the outside was good. Some of the inside boards were not aligned correctly. Also, communication with the company was not as good as when we had used them in the past. However, we would not hesitate to use Bellwether for future projects.