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Whether you're replacing outdated wood siding, upgrading to vinyl or fiberglass windows, or enhancing curb appeal with a new front door, we deliver expert craftsmanship and personal service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

355 East 112th Drive , Northglenn, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Trad Red
  • Other Services
  • Other Services: Siding
274 Washington Street , Golden, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePlank Select Cedarmill Siding: Monterey Taupe
  • Other Services
  • Other Services: Siding
10238 Andee Way , Littleton, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Primed
  • Other Services
  • Other Services: Siding
Harlan Street , Westminster, CO, US
  • Norandex Woodsman Select Siding
  • Norandex Woodsman Select Siding: Olive
  • Other Services
  • Other Services: Siding
3370 South Marion Street , Englewood, CO, US
  • HardiePlank Select Cedarmill Siding
  • HardiePanel Select Cedarmill Siding: Boothbay Blue
  • Other Services
  • Other Services: Siding

Customer Testimonials

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Bell L
Cash Stricker was great and caught a couple of punchout items we hadn't noticed! It's stressful living in a construction zone for a week but the end result looks so good. Looking forward to comparing heating bills from past years now that our home has been ungraded to have OSB sheathing and Hardiewrap.
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A Williams
The installation of the siding was excellent.
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paul jost
Bellweather Windows, Siding and Doors team updated our 1975 windows & siding and did a awesome job! The entire team from up front to the execution has been an incredible group to work with and was amazed by the speed of execution and quality of work during install. Will be definitely recommending them to friends, family and neighbors.
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Stephanie Melzer
We had Bellwether replace our siding and it was a great experience! The whole process was quick and went smoothly. The office was very easy to communicate with and talked us through everything and the contractors were excellent. We literally have no complaints and are very happy with the end result!
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John Savoy
Bellwether exceeded my expectations! From my first contact with salesman Steve Dennis and then Project Manager Paul Dickens, both listened and answered my questions and assured me the project would be done to my expectations. Well the day of the job 15 men showed up, headed by lead man Angel. His crew was so well orchestrated, they stripped the whole house of all cedar siding, wrapped and started siding the first day. The attention to detail was amazing and the house was fully sided with Hardie ... Read more