Quick Answer: Most commercial roof leaks start at seams, flashing, and penetrations rather than in the open membrane field, and ponding water makes any weak point worse. Repair when a moisture scan shows less than about 25 percent saturation and the membrane is generally sound; replace when saturation is widespread or the membrane has failed broadly. We provide free inspections, moisture scans, and emergency response from Denver and Grand Junction.
Commercial Roofing Contractor repairs commercial roof leaks on office buildings, retail centers, and industrial facilities across Colorado. Our Denver and Grand Junction crews repair TPO, EPDM, PVC, modified bitumen, and metal roof systems, and we respond fast when a leak or storm creates an emergency.
Common Causes of Commercial Roof Leaks
Most commercial roof leaks start at seams, flashing, and penetrations, not in the open field of the membrane. Rooftop penetrations for HVAC units, drains, vents, and pipes are the most common failure points, along with parapet and edge flashing and aging or separated seams. Ponding water makes any weak point worse by keeping it under constant hydrostatic pressure, so drainage issues often show up as recurring leaks at the same spot.
Repair vs Replace: How We Decide
We run a moisture scan, typically infrared thermal imaging or a capacitance meter, across the roof to check for trapped moisture in the insulation that is not visible from the surface. As a general rule of thumb, a roof with less than about 25 percent saturation is usually a good repair or restoration candidate. Broader saturation, widespread membrane failure, or structural deck damage points to a full roof replacement instead of a repair, because repairing over trapped moisture just seals the problem in rather than solving it.
Emergency Roof Repair
When a storm or sudden failure creates an active leak, we provide emergency tarping and temporary repair to stop water intrusion and protect your building's interior, equipment, and inventory while a permanent repair or replacement is scheduled. Active leaks and storm damage are prioritized ahead of routine service calls.
How a Proper Repair Preserves Your Warranty
Repairs made by an unauthorized contractor, or with materials incompatible with your existing system, can void a manufacturer warranty. We are authorized to service the major commercial roofing systems we install, and a proper repair performed to manufacturer specification preserves your existing warranty rather than jeopardizing it. If your roof is under warranty, we confirm the repair approach protects that coverage before any work begins.
Our Repair Process
- Free inspection and moisture survey. We locate the leak source and scan for trapped moisture, not just patch the visible symptom.
- Diagnosis and recommendation. We give you an honest repair-vs-replace recommendation in writing, based on the actual condition of the roof.
- Repair to manufacturer specification. Seams, flashing, and penetrations are repaired using materials and methods compatible with your existing system and warranty.
- Verification. Repaired areas are inspected to confirm the leak path is fully resolved, not just masked.
Service Areas
Denver Metro and Front Range: Denver, Aurora, Arvada, Lakewood, Westminster, Broomfield, Commerce City, Parker, Golden, Englewood, Littleton, Centennial, Castle Rock, and surrounding communities. Office: 5300 Broadway, Denver, CO 80216.
Western Slope and Grand Valley: Grand Junction, Fruita, Clifton, Palisade, Loma, Orchard Mesa, Delta, Montrose, Rifle, and Glenwood Springs. Office: 2863 North Ave Unit 2, Grand Junction, CO 81501.
Frequently Asked Questions About Commercial Roof Repair
What causes most commercial roof leaks?
Most commercial roof leaks start at seams, flashing, and penetrations, not in the open field of the membrane. Rooftop penetrations for HVAC units, drains, vents, and pipes are the most common failure points, along with parapet and edge flashing and aging or separated seams. Ponding water makes any weak point worse by keeping it under constant hydrostatic pressure.
How do you decide between repair and replacement?
We run a moisture scan across the roof to check for trapped moisture in the insulation. As a general rule of thumb, a roof with less than about 25 percent saturation is usually a good repair or restoration candidate, while broader saturation, widespread membrane failure, or structural deck damage points to a full replacement instead of a repair.
What is a moisture scan and why does it matter?
A moisture scan (often done with infrared thermal imaging or a capacitance meter) locates wet insulation hidden beneath the membrane that is not visible from the surface. Repairing over trapped moisture just seals the problem in, so a scan is standard on any repair-vs-replace decision, not an upsell.
Do you offer emergency roof repair?
Yes. When a storm or sudden failure creates an active leak, we provide emergency tarping and temporary repair to stop water intrusion and protect your building's interior and contents while a permanent repair or replacement is scheduled.
Will a repair void my roof's manufacturer warranty?
It depends on who performs the work and how. Repairs made by an unauthorized contractor, or with incompatible materials, can void a manufacturer warranty. We are authorized to service the major commercial systems we install, and a proper repair performed to manufacturer specification preserves your existing warranty rather than jeopardizing it.
How quickly can you respond to a commercial roof leak?
We prioritize active leaks and storm damage and typically schedule an inspection within a day or two of your call, sooner for an active emergency. Denver metro and Western Slope crews are dispatched from our two offices, so response time depends on where your building is located.
What does commercial roof repair cost in Colorado?
Repair costs vary widely based on the roof system, the extent of damage, and roof access, ranging from a few hundred dollars for a localized seam or flashing repair to several thousand for a larger detail-driven repair. We do not quote firm repair pricing without an inspection. Denver metro: (720) 893-7663. Western Slope: (970) 877-7663.