We recently got new windows and siding and absolutely love the outcome! The crew that came out was so fast and very nice/respectful!
Kooper Stringer
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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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
When we decided it was finally time to replace our siding and windows, we did a lot of research on different companies. We ended up choosing Bellwether and couldn’t be happier! Their price was better than our other quotes and they were so thorough and professional. They were upfront and answered all of questions honestly. We never felt rushed or like they were trying to sell us more than we needed. The project went smoothly and we loved the text thread they set up during the project for communic... Read more
** Update on review **
The owners of Bellwether reached out to me about this project and came on-site to review. They agreed that there were multiple areas that needed to be addressed and worked with a new project lead to get those noted and planned. A different crew came out and re-did these areas to a much higher quality at no cost to me.
Overall I am happy with how they addressed this situation and have updated my review to 4 stars.
** Initial Review **
We used Bellwether for a project that... Read more
The most experienced and professional people in Colorado
Awesome staff super friendly helpful