Denver's Most Trusted Home Improvement Company

When you work with Colorado Classic Exteriors, we guarantee you will receive:

  • An easy and comfortable sales process
  • Quality products and craftsmanship
  • Open and clear communication
  • A lifetime warrantee on the products and work

We love our work and are on a mission to improve our neighborhoods one home at a time.

Our Story

Preston and Sherrie Lewis founded Trademark Windows in 1982. In the beginning, Preston worked as a general construction contractor, first handling replacement siding, and later windows and exterior doors.

After a period of expansion, Preston and Sherrie felt the business had strayed from the service they wanted to provide in order to sell to too many homeowners. Preston didn’t like the odd pricing structures or high-pressure sales tactics that had become industry standard. He also didn’t want to be a business owner that was too busy to personally work with his customers.

In the 1990’s, Preston and Sherrie rebranded as Colorado Classic Windows and adjusted the business to provide 100% transparent pricing, more customer touch points, and more training and oversight of crews and project managers. Preston said he wanted customers to believe what he had to say and buy when they were ready. He also wanted customers to be completely satisfied with his company’s work not just immediately after a job is complete, but satisfied for the rest of their lives thanks to the enduring quality of his installations.

Preston’s honest style of business has continued to win over Denver homeowners for decades. As more customers called Preston about other types of jobs, the company again expanded its crews to provide additional services. Today Colorado Classic Exteriors offers a full range of home improvement projects including exterior doors, replacement windows, pergolas and patio covers, and replacement siding.

We're Here to Help You, Not Sell You

One of the most distinctive qualities of our company is our no-pressure approach to sales. We want you to have a peaceful buying experience and be happy with whatever decision you make. If it’s not the right time for you to upgrade your home, that’s ok with us! Our team is not on commission or aiming to hit a quota.

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