Douglass Colony Group has maintained a quality brand reputation in the Rocky Mountain region since 1947.

We are not a fly-by-the night storm chaser. We will always give you a fair quote, quality materials, and friendly service.

As the largest commercial roofing company in Colorado and the Rocky Mountain region, Douglass Colony’s materials, services, and expertise are unparalleled. Due to our experience and size there is no limit to the services or capabilities that we can provide. As installers for every major manufacturer and a proven record of proficiency, we can assist you on any project from budget numbers to design and development.

Our sales staff is LEED AP accredited to help your business go “green.” Whether you’re aiming for a specific LEED certification or simply looking to reduce your environmental footprint, our LEED accredited representatives can recommend a variety of products and applications to fit your needs.

To learn more about out commercial roofing company, contact us today at 877-288-0650.




Douglass Colony Group has four locations throughout Colorado (Commerce City-HQ, Greeley, Glenwood Springs, and Colorado Springs)


We are licensed in AZ, CA, CO, KS, MT, ND, NJ, NM, NV, OH, OR, PA, SD, UT, WA, & WY. Give us a call today to speak with a qualified representative about your commercial project!


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Commercial Roofing
Commercial Roofing Denver
Commercial Solar
Commercial Waterproofing
Commercial Contractors
Commercial Roofing Contractors
Commercial Metal Roofing
Douglass Colony Roofing
Solar Installation
Did you know installing sunscreens could save you
hundreds on your utilities.
Inspecting your roof twice a year can save you
money in repairs and prolong the life of your roof.
Did you know that by adding a white roof you can
trim your energy costs by up to 20%?
Douglass Colony offers PV+Roof™, the only
integrated roof and solar PV option on the market.

Commercial Roof Repair

Douglass Colony Group maintains the largest commercial roof repair department of any commercial roofing contractor in the state of Colorado and can complete any emergency roof repair need 24/7 regardless of size, day or time.  Douglass Colony Group is an Authorized Installer and Approved Applicator for more commercial roofing material manufacturers than any other roofing contractor in the state of Colorado and will perform all repairs without jeopardizing any warranties currently in place.  We perform roof inspections, preventative maintenance, leak investigation and repair, small projects and tenant finishes.

Commercial Solar

Our company designs and installs full-service turn-key photovoltaic (PV)/electric solar systems for commercial, industrial, educational, and government customers all over the United States.  As an industry-leading commercial roofing contractor, we are able to offer PV + RoofTM a single source integrated solution for all commercial solar installations.  We install crystalline modules on a variety of applications including roof mounts, carports, awnings, sunshades and ground mounts.

Commercial Waterproofing

Douglass Colony Group is a premier commercial waterproofing contractor that offers a variety of waterproofing applications and services nationwide. Our waterproofing experts will recommend and perform the necessary waterproofing measures to safeguard your building and fully optimize your building space. Our company also installs horizontal and vertical (or below grade) waterproofing applications. Horizontal applications are used for plazas, parking decks, terraces, garden roofs, and green roofs. Below grade or vertical applications are typically used for foundations, walls, and planters.

With 4 offices throughout Colorado and in the Denver area (Commerce City, Greeley, Colorado Springs, and Glenwood Springs) we are sure to have an office near you! We are licensed in AZ, CA, CO, KS, MT, ND, NJ, NM, NV, OH, OR, PA, SD, UT, WA, & WY.  Give us a call today to speak with a qualified representative about your commercial project!