Commercial Flat Roof Repair in Los Angeles
Most commercial buildings in Los Angeles have flat or low-slope roofs, and each system fails in its own way. We repair TPO, PVC, EPDM, modified bitumen and built-up roofs across Los Angeles County, using materials and methods matched to the system already on your building.
Flat roof problems?
Tell us about the building and what you’re seeing. We’ll inspect it and send a photo report.
Call (323) 551-9034Request an inspectionNo obligation. Photo report included.Common Flat Roof Problems
- Open seams on single-ply membranes like TPO, PVC and EPDM.
- Blisters, cracks and splits on built-up and modified bitumen roofs.
- Ponding water from clogged drains or low spots.
- Failed flashing at parapets, edges and penetrations.
- Punctures from foot traffic and equipment service.
How we repair each flat roof system
| System | Typical failures | How it's repaired |
|---|---|---|
| TPO | Seam separation, punctures, aging membrane | Hot-air welded patches and seam repairs |
| PVC | Seam failures, shrinkage at edges | Hot-air welded patches and reinforced edge details |
| EPDM | Seam tape failure, shrinkage, punctures | Cleaned and primed seams with tape and patches |
| Modified bitumen | Blisters, cracked laps, worn granule surface | Cut-and-patch repairs and new cap sheet sections |
| Built-up (BUR) | Blisters, alligatoring, gravel loss | Repairs with compatible asphalt plies and resurfacing |
Why standing water matters
Water that sits on a flat roof long after rain speeds up membrane wear, adds weight and finds every weak seam. Clearing and repairing drains often solves it. Persistent low spots may need tapered insulation or crickets during a larger repair or replacement.
Repair, restore or replace
Flat roof repair makes sense when damage is localized and the roof is otherwise sound. When the membrane is failing across the roof but the insulation is dry, a roof coating can restore it. When insulation is wet or the system is at the end of its life, replacement is usually the better investment. See TPO roofing and PVC roofing for the systems we install most.
For Los Angeles commercial roofing repairs on any flat roof system, start with an inspection. Have an active leak? See commercial roof leak repair.
Frequently asked questions
What kinds of flat roofs do you repair?
TPO, PVC, EPDM, modified bitumen and built-up roofs, plus spray foam and coated roofs.
Can a flat roof be repaired instead of replaced?
Often, when damage is localized and the insulation is dry. Widespread failure or wet insulation usually means replacement.
Is ponding water a problem on a flat roof?
Yes. Water that stays long after rain speeds up wear and finds weak seams. Clearing drains or adding slope fixes it.
How do you repair a TPO roof?
Damaged areas and open seams are cleaned and repaired with hot-air welded TPO patches.
Related services and guides
Most flat roof problems are connected, which is why our commercial roofing in Los Angeles starts with the whole roof system.
Fix the Flat Roof Before It Spreads
(323) 551-9034Request an inspection
Los Angeles Commercial Roofing Pros · 629 S Central Ave, Los Angeles, CA 90021