At Bellwether Exteriors, they have you covered for all your siding needs… but what about the rest of your home? New windows and new siding go hand in hand to drastically increase your home’s energy efficiency and improve its curb appeal, while providing the highest return on investment into your home’s long-term value. When it comes to your home's exterior, they are your trusted siding and window pros. Contact them today to find the windows you want with the right look and right price!

Services Offered:

  • Window Replacement
  • Basement Windows
  • Egress Windows
  • Vinyl Windows
  • Wood Windows
  • Interior and Exterior Doors
  • Security Doors
  • Siding Repair / Replacement
  • James Hardie Siding

Google Reviews

Bellwether Windows, Siding, & Doors Rating: 4.8

Ed Hester

Nov 17, 2023
Had all of our siding replaced by Bellwether with James Hardie siding. They finished off the job by sealing and painting all eaves […]

Clemens Wan

Jan 16, 2024
We installed a new Sierra Pacific door and 3 Pelle windows in our Lennar house in the northend area. The process took around 3 […]

Ada Van Roekel

Aug 11, 2023
Bellwether was phenomenal. Cash came to the house in May after a large hail storm that damaged the vinyl on multiple sides. He spent […]

Andrea Lively

Nov 09, 2021
The best experience! I work in construction and am sad to say that most folks these days do not take any ownership, pride or […]


May 23, 2023
Bellwether replaced our 100 year old shingle siding with James Hardy, paying great attention to the detail of our home. From our sales person, […]

50 Recommendations

Please provide us with the following before posting your endorsement

I have used CSR (Now Bellwether) on three separate properties over the last year and have had great results! Their quality of work, communication, and follow-up by Cash and Paul and other CSR employees exceeded my expectations. Cash and Paul always made sure that the work was done properly and followed up with Covid based supply chain difficulties. I would definitely recommend them for any of the work that is listed below and will use them again on other properties. Property one had a full exterior siding replacement with James Hardie prefinished siding, new exterior doors and hardware, new gutters, new windows, new interior window/door trim and paint. Property two had new windows, exterior doors and hardware, siding repair/replacement with James Hardie siding, exterior paint, and interior window/door trim and paint. Property three was a full exterior paint and stain job consisting of 4 colors.

David Lavigne
  • They provided excellent service from beginning to end. Our new windows are beautiful, and the process of planning and installation was so easy. The installation team was extremely professional and considerate, we could not be happier with Colorado Siding and Repair!

    Joyce Touchton
  • Colorado siding repair (now Bellwether) is certainly interested in providing the best service and workmanship possible. Their siding crews are excellent, taking great care and pride in installation to the customer’s satisfaction. Communication is excellent. Paul, one of the owners personally ensures that everything is done accurately and to your specifications. When you get a bid, they are not high pressure and give you a fair estimate, unlike some of the other five-star rated companies we interviewed. We are very pleased that we chose them over three or four other bids. The results were excellent and would not hesitate to use them for any other services they provide.

    Kim Ruhland
  • Overall, this was an incredible and painless project. Keith worked with us to get our vision for the new siding and windows and walked us through the plan and process. Vicente was an excellent project manager, and we were so happy with the crew. Siding installation was quick, and I really appreciated how the crew cleaned up at the end of each day. Alex and his team were fantastic with the paint; Oscar’s gutter installation was stunningly quick; Rigoberto’s work finishing the punch list items brought it all together. Kari was so responsive with questions and finalizing our project on the back end. When you end such a big upgrade and can’t think of anything you would have done differently, it’s such a relief. From start to finish, working with CSR (Bellwether) was wonderful.

    Kalin Ivany
  • Colorado Siding Repair, now Bellwether replaced our old siding with Hardie Plank and also added a couple of new windows we wanted, where many others were not able to. Excellent job overall. Was all done virtually as well before our moving in showing us detailed pictures of the work they did, and they also took care of some minor issues we brought up once we were there.

    Ro Mistry
  • Great experience, professional, and quality work. On time great friendly crew. Complete siding, window, and door Replacement project! Highly recommended!!!

    Robert Jeffery
  • Cash was exceptional to work with. Most honest contractor we ever dealt with!

    Stephanie Lindgren
  • Everyone on their team was friendly and professional. After the job was complete they followed up to make sure we were happy and asked if we had any concerns. They did a great job.

    Vicki K
  • We really couldn't be more happy about it. We were most satisfied with the price, quality & professionalism of the staff. The quality of work was excellent. They did everything they could to accommodate our needs and make sure we were pleased. The price was fair and the finished project is better than we expected

    Sheryl J.
  • Very professional and executed the work quickly and efficiently. I’d recommend this group to anyone I know."

    Fallon H.
  • Cash and crew did great work. This is a very genuine business that cares about their customers."

    Tim D.
  • CSR and the team there are great! They have completed a few projects for us ranging from small to large. Trustworthy, responsive, thorough, fair...what more could you want. We will definitely use them for any future projects

    Brady M.
  • Working within the restoration industry I routinely need to refer my customers to many different tradesmen outside of my expertise. Colorado Siding Repair consistently exceeds my expectations with the responsiveness to both myself and my clients and does amazing work! The value they bring with their consultative and educational process is a breath of fresh air! For jobs both large and small they show amazing attention to detail and communication!"

    Ken S.
  • We had a fabulous experience with CSR. We worked closely with Cash for every detail from design, color, financing and timing. He made it fun and easy! I would highly recommend them!"

    Regina T.
  • I would give these guys 100 stars if I could! I am VERY, VERY picky about this kind of work being done on my house and I couldn't recommend them more highly! Cash was our sales rep and he never pressured me in any way. He presented all options to me equally and let me decide if I wanted to move forward and what level of siding to choose. One of our huge issues is that our 1970 house was roasting in the summer and freezing in the winter. He suggested that we put new insulation in as part of the project (although he made NO promises that it would help with heating/cooling of the house). We both HOPED it would and let me tell you, with these upper-90 degree days, we are completely, totally comfortable in our house now. WOW!
    I have never in my life seen a group of guys work so hard on a project. Emerson and the rest of the crew who worked on our house were here 12-14 hour days, always smiling, positive, friendly with us and each other, professional.....AND SUPER respectful of our property. I am a freak about my flowers and grass and during this entire project, the siding crew did not injure one blade of grass or one petal on one flower. They cleaned up thoroughly at the end of each day as well.
    I added a few things along the way to the project, including wrapping the existing beams (would highly recommend doing this), and Cash, as well as the crew, were happy to do so and did this quickly and professionally.
    Our house honestly looks like a brand new house. I realize it costs a lot of money to reside a house and it's a big investment. So of course, you want to choose a reputable, honest company that does great work. Colorado Siding Repair is that company. This is the best money we've ever spent! One of my neighbors told me that he'll never be able to sell his house now because ours looks so good - ha! He is looking at doing siding next year - I hope he chooses this company!
    Thank you, Colorado Siding Repair!

    Carri S.
  • Fast and efficient. The crew did an amazing job. I am very happy with their work and would highly recommend them to any homeowner who needs siding work.

    Bill E.
  • Referred them to my neighbor. They did an excellent job and my neighbor hired them too.

    Wolfgang M.
  • Knowledge of the problem I was experiencing. I was included in the discussion of how to best resolve the problem and why. The work looks wonderful, the workers were all professional and timely, and I was extremely happy with the process and results.

    Northglenn Homeowner
  • I needed help with a problem that I could no longer could take care of myself since I have battling Multiple Sclerosis and a fractured femur in my right leg. No one else could even be bothered with this small repair job. Cash came out and did the repair at a very reasonable price. I can’t thank him enough.

    Douglas B.
  • Cash came out and gave an excellent consultation. He described exactly what needed to be done to repair my siding.

    Justin S.
  • All facets of the project have been easy, from the original estimate, through the quote/contract, and now the work is done. I worked with 3 crews: demolition and replacing battens/facia; paint prep that caulked the whole house; and the guys that replace all my gutters. All three crews were great. Cash and Paul were easy to work with as well. Strongly recommend them for your project.

    Kelly M.
  • I hired CO Siding Repair for my rental home that was going on the market for repairing and replacing damaged siding and they did a great job at a fantastic price. I've passed their number on to my friends with rental properties and private homes who have had recent hail damage and encouraged them to give them a call. I highly recommend them!

    Jordan M.
  • Very professional and honest. Quotes are clear, lower than competition and truly honest in assessment of work or repairs to be done. Cash went the extra mile to address all questions and concerns.

    Jason L.
  • Colorado Siding Repair was a pleasure to work with and did excellent work!! We contracted them to do a large hail damage repair project on our house - it included a full roof replacement (including a section of the house that had cedar shakes under multiple layers of composite, so required sheeting), gutters, window replacement and modification (replacing a sliding door with a window), and painting of the entire house. It was a complex project, and they coordinated the teams to consolidate work as much as possible, and make it as easy as possible for us in terms of scheduling. We worked with Cash and Paul, and I can't say enough about how pleasant and efficient they were. The work teams were also great, and did an excellent job of cleaning up after each project - especially the roofers, using a magnet to clean up all the nails, which is a huge plus for a home with small kids. And the quality of workmanship on every component is excellent. We will definitely be calling them again for future projects!

    Kristi G.
  • Responded almost immediately to my original inquiry, even on a holiday weekend. Reasonably priced and professional. Promptly took care of minor discrepancies and made sure all work was completed to a superior level of quality. Would definitely use them again. Without question.

    Mark S.
  • Rare to find such kind and honest people in the construction business. They are the best!

    Mary M.
  • Excellent in all respects!

    Pat D.
  • Cash always responded to phone calls and e-mails in a timely manner, and he was always professional. His crew did an excellent job on all work.

    Susan S.
  • CO Siding repair did an excellent job replacing my siding! It is a very old house, full of surprises , the crew was very experienced and did a great job! Thanks guys!

    Linda K.
  • Quick, efficient, value for money, five stars!

    Alexy P.
  • Cash was upfront, honest and helpful. His team did a great job and was done faster than scheduled. Would definitely recommend!

    Kevin C.
  • Great company to work with!

    Anna H.
  • Very easy to work with and provided some great suggestions in paint selection and a variety of siding designs.

    Allen W.
  • Amazing company, fair prices. Cash, the manager was great . A +++++ in my book, thanks.

    Sam N.
  • Very nice folks, good work, would recommend!

    Debbie W.
  • Great company to work with. Fair price and attention to detail. Josh, the owner, is reachable and great to work with. Manuel is a great carpenter and paint team very efficient.

    Rod N.
  • I would highly recommend Colorado siding repair they were very professional and completed the trim in a very short amount of time. Their cost were more than competitive my cost came under the estimate that tells you they are your trim company.

    Ted L.
  • Home located in Lakewood, CO: Josh was extremely helpful on my extensive hail damage, responded immediately to my questions and offered Excellent advice on a problem I encountered with another contractor. Prices were good and customer service was top notch. I highly recommend their services.

    Shay C.
  • Cash is great to work with. Does what he says he is going to do. Followed up with me, explained EVERYTHING and was patient in dealing with the extra hoops needed on an insurance claim and pricing is competitive. This company was recommended to me and I highly recommend this company to others.

    Diana S.
  • We worked with Cash, Paul, and foreman Mario on a big siding, gutter, painting job. Absolutely pleased with these guys, from the workmanship and attention to detail to their work ethic and honesty. We've done a lot of work on our house and CSR is one of the rare teams that compel me to go out and write a review.
    They helped us stage colors and design, stayed on budget, worked quickly and effectively, and did very clean quality work. Clean cuts, extra coats of paint, flashing on everything (which was painted to match), clean angles where there were grades, caulk dyed to match, ongoing supervision of the workmanship.
    Highly recommended.

    Paul L.
  • Excellent job. Worked hard and die good work.

    R. Penn
  • Top notch service and fair prices. Definitely recommend this crew

    Abigail T.
  • Great service start to finish with Cash, Paul, and Tanisha. Reassuring expertise for a puzzling problem. Beautiful repair work - just what we needed but nothing more. Finished quickly. Everything left clean and orderly. Thanks to all. Highly recommended.

    Annette E.
  • They went above my expectations and had to move a lot of my junk to do their job. Took care not to damage my roses which I had planted across the front of my house. When I called or texted with a concern, they would always respond quickly. I’m a stressed person and worried about everything, they helped by addressing all my concerns. So far this is by far the best experience I’ve ever had with hiring someone to work on my home. They treated my property as if it was their own!

    Darlene F.
  • Colorado Siding Repair is a rare company to find. Their willingness to get the job done right and continue to strive for complete customer satisfaction is unlike anything I have encountered in the construction industry. Cash and Paul are terrific human beings guided by their integrity and honesty. Despite several set-backs, they showed every day and always made sure we knew they were going to do everything they could to make us satisfied.

    Ryan M.
  • The project went smooth from start to finish. They started exactly when expected and ended when as they said. They did a good clean job. Our house looks so good now. The rates were very competitive and I believe we got a great deal! I am getting compliments all the time. It was money well spent. You can't go wrong with this company!

    Luke M.
  • The quality of work was excellent. They did everything they to make sure we were pleased. The price was fair and the finished project is better than we expected.

    Sam N.
  • The quality of work was excellent. They did everything they to make sure we were pleased. The price was fair and the finished project is better than we expected.

    Rae J.
  • We really couldn't be more happy about it. We were most satisfied with the price, quality & professionalism of the staff. The quality of work was excellent. They did everything they could to accommodate our needs and make sure we were pleased. The price was fair and the finished project is better than we expected.

    Sheryl J.
  • Customer service was amazing, they responded to all questions and concerns very quickly and effectively. Cash was wonderful to work with he all ways got right back to me and took care of any questions or concerns. We had an electrical issue and he went above and beyond to resolve it quickly.

    Melissa C.
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