Top Commercial Roofing Companies In Denver For 2027
Lily Roberts
Senior Marketing Strategist - ReVerb
11.06.2026
Commercial roofs in Denver face the same hail and UV as homes, but on a much larger scale and usually on low-slope systems such as TPO, EPDM, PVC and modified bitumen. A failed membrane can shut down a warehouse or soak a server room, so property managers need contractors with the crews, equipment and manufacturer credentials to handle large jobs and fast repairs.
These Denver companies run dedicated commercial operations, from the region’s largest specialty contractor to long-standing family firms with commercial divisions.
Denver Commercial Roofing Companies At A Glance
Company
Base
Known For
Best For
Douglass Colony Group
Denver, Colorado Springs, Greeley
Since 1947, Firestone Master Contractor
Large and complex buildings
Alpine Roofing
Golden and Denver
Founded 1960, veteran-owned
Mid-size commercial properties
Arapahoe Roofing & Sheet Metal
Louisville
Founded 1967, own sheet metal shop
Buildings with custom metal details
Black Roofing & Waterproofing
Boulder
Founded 1975
Building envelope projects
Academy Roofing
Aurora (Jasper St)
45 years in business
Difficult or unusual roofs
Gardner Roofing
Aurora
Since 1998, GAF Master Elite
Small commercial and multifamily
Interstate Roofing
Denver
Since 1994, 10 locations
Portfolios across the Front Range
Best Commercial Roofing Companies In Denver For 2027
Douglass Colony Group was founded in Greeley in 1947 and opened its Denver office in 1973. It describes itself as the largest commercial roofing contractor in Denver and the Rocky Mountain region, with more than 400 employees and work on the State Capitol, Denver International Airport and the Colorado Convention Center.
Beyond roofing, Douglass Colony handles metals, waterproofing, solar and maintenance programs. It holds Firestone Master Contractor and GAF Master Elite status and is the obvious call for large or high-profile buildings.
2. Alpine Roofing: Veteran-Owned Since 1960 With A Commercial Division
Alpine Roofing has worked in the Denver area since 1960 and is veteran-owned. It runs a dedicated commercial roofing division alongside its residential work.
Six decades in the market and a commercial team make Alpine a dependable option for offices, churches and mid-size retail buildings.
Arapahoe Roofing & Sheet Metal has operated since 1967 from Louisville and owns its own architectural sheet metal shop, where it custom-fabricates copings, flashings and other metal accessories.
Commercial roofs often fail at edges and penetrations. A contractor that fabricates its own metal can detail those areas precisely, which suits buildings with complex parapets or architectural metal.
Black Roofing & Waterproofing was founded in 1975 in Boulder and pairs commercial roofing with waterproofing and architectural metal systems.
Property owners dealing with leaks that cross from roof to wall to foundation benefit from one contractor responsible for the whole envelope.
5. Academy Roofing: Aurora Specialist In Complex Roof Projects
Academy Roofing is a full-service Aurora contractor celebrating 45 years in business. It handles residential and commercial roofs and specializes in complex, difficult projects that other contractors turn down.
Academy is worth calling for buildings with unusual geometry, mixed roof systems or tricky access.
6. Gardner Roofing: Certified Commercial Contractor With Family Ownership
Gardner Roofing is a family business founded in 1998 that is certified as a commercial roofing contractor as well as a GAF Master Elite residential installer. It is a Colorado Roofing Association member with an A+ BBB rating.
Gardner suits owners of smaller commercial buildings, HOAs and multifamily properties who want family-level service.
7. Interstate Roofing: Residential And Commercial Capacity Across 10 Locations
Interstate Roofing handles commercial roofing alongside its residential business, with ten locations across Colorado and Wyoming and more than 24,000 completed projects since 1994.
Property managers with buildings spread along the Front Range can work with one contractor across the portfolio.
How To Choose A Commercial Roofing Contractor In Denver
Which membrane systems are they certified to install?
Ask which manufacturers certify the contractor for TPO, EPDM, PVC or modified bitumen. Certification determines which no-dollar-limit warranties they can offer.
Do they offer a maintenance program?
Twice-yearly inspections and post-storm checks catch small punctures and seam failures before they become leaks. Ask for a written maintenance plan with photo reports.
Can they work around your operations?
Ask about phasing, noise, odor from adhesives and how they protect occupants and equipment while the roof is open.
What is their safety record?
Ask for the contractor’s experience modification rate and safety program. Large commercial jobs carry real liability for building owners.
Conclusion
Douglass Colony is the clear choice for large and complex commercial buildings. Arapahoe and Black Roofing stand out for metal and envelope work, Alpine and Academy bring decades of commercial experience, and Gardner and Interstate suit smaller buildings and multi-site portfolios.
