Velocity Roof Repair / Commercial Flat Roof Repair Denver

Commercial Flat Roof Repair, Denver — Same-Week Response on Active Leaks

Leaks, ponding, blisters, seam failures, penetration flashings — we diagnose and repair commercial flat and low-slope roofs across Denver metro. Whether you need a targeted patch or a full restoration assessment, the response is fast and the proposal is line-item transparent.

Request Inspection → Call 303-596-3114

Common commercial flat-roof problems we repair

Most flat-roof problems trace back to one of six things. Here’s what they look like, what they’re actually doing to your building, and how we fix them.

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Active leak inside the building? Call us at 303-596-3114. We respond same-week and can usually have a diagnostic crew on the roof within 48 hours.

Issue 1

Active leak / interior water staining

Water inside the building is rarely directly under the roof failure point — it tracks along the deck before it drips. We use moisture mapping to find the actual entry point, not just the visible stain.

Issue 2

Ponding water (>48 hours after rain)

Standing water on a flat roof accelerates UV breakdown and seam failure. Most coating warranties exclude ponding unless specifically endorsed. Fix is either tapered insulation, additional drains, or a ponding-rated coating.

Issue 3

Blisters in the roof surface

Trapped moisture vapor under the membrane expands in heat and lifts the surface. Each blister is a future leak. Fix: cut, dry, and patch with reinforcing fabric in silicone base coat.

Issue 4

Seam & lap failures

Where two pieces of membrane (TPO, EPDM, mod-bit ply) overlap, age and movement open the seam. Fix: clean, prime, reinforce with polyester fabric, and over-coat.

Issue 5

Penetration flashings (vents, HVAC, drains)

The boots, collars, and curbs around roof penetrations are the most common leak point on a flat roof. We strip and rebuild flashings with primer + reinforcing fabric + silicone topcoat.

Issue 6

Wet insulation under the membrane

Water that’s breached the membrane saturates the insulation below. You can’t see it from above — only an infrared moisture scan reveals it. Fix: cut out wet sections, replace insulation, cap with new membrane ply, recoat.

Roof types we repair

Built-Up Roofing (BUR): tar-and-gravel and smooth BUR. Repairs include blister cuts, seam reinforcement, gravel-stop replacement.
TPO: seam welding, patch fabric over punctures, penetration flashing rebuilds.
EPDM (rubber): seam re-gluing, patches with self-adhered cover strip, primer-and-coat repairs.
Modified bitumen: torch or cold-applied patches, seam reinforcement, granule re-broadcast.
Existing silicone or polyurethane coatings: spot recoat, blister cut-and-patch, top-coat refresh to extend warranty.
Metal: rust treatment, fastener seal, primer + silicone over the seams and panels.

What we don’t do

We’re a commercial flat-roof specialist. We don’t do residential pitched-roof work, asphalt shingle, tile, or wood shake. If that’s your roof, we’ll point you to a residential roofer.

Repair vs. restoration vs. replacement — how we decide

Three paths, and the right answer depends on roof age, defect extent, and wet-insulation percentage. Here’s how we triage:

Targeted repair: isolated defects, <5% of roof area, otherwise sound membrane and dry insulation. Lowest cost, no warranty paper, buys you time.
Silicone restoration: aging roof with multiple defects, sound deck, <15% wet insulation. ~50% the cost of tear-off, registered 15- or 20-year manufacturer warranty. More on silicone coatings →
Tear-off & replace: structural deck damage, >15% wet insulation, or a roof that’s already been recoated to maximum warrantable thickness. Most expensive, longest schedule, but sometimes the only honest answer.

Our infrared moisture scan tells us which of the three is right for your roof. We’ll show you the heat-map, walk you through the data, and tell you straight which path makes sense.