Commercial Roof Repair
Targeted commercial roof repair for failed seams, punctures, flashing, and ponding — fixed with system-matched materials so the repair bonds and lasts, with minimal disruption to the business below.
Flat and low-slope roofing for businesses.
Commercial Roofing in West Covina, CA
A leaking commercial roof does not just damage a building — it interrupts stock, equipment, staff, and customers. StormPeak provides commercial roofing in West Covina for warehouses, retail stores, offices, and multi-family buildings: commercial roof repair, commercial roof replacement, and commercial roof maintenance on flat roof and low-slope roof systems, including TPO roofing, EPDM, PVC, modified bitumen, and built-up roofs. Our licensed and insured crew works around your business hours, schedules disruptive stages after hours when needed, and keeps your doors open while the roof gets fixed.
Careful work. Honest options.
About this service
Understanding Commercial Roofing
Commercial roofing is a different job from residential roofing. The roofs are larger, the systems are low-slope, and the stakes are higher — a single failed seam can soak stock, shut down a workspace, or damage tenants' belongings. A commercial roofing contractor has to understand drainage across thousands of square feet, not just one slope.
As a commercial roofing contractor in West Covina, California, StormPeak works on the flat and low-slope systems most local businesses rely on: TPO roofing, EPDM rubber, PVC, modified bitumen, and built-up roofs. We serve warehouses, retail centers, offices, and multi-family buildings across West Covina and nearby areas including Baldwin Park, Azusa, Glendora, San Dimas, Pomona, Irwindale, Charter Oak, Vincent, and Covina. California's Title 24 cool-roof rules shape many low-slope roof choices here, favouring reflective membranes that cut heat gain on large flat roofs, and we help property owners and managers choose systems that meet those rules while standing up to intense sun, Santa Ana winds, and heavy winter rain. Ponding is the quiet enemy of large flat roofs: water that sits for days adds weight, stresses seams, and finds its way inside. Our surveys map ponding, drainage, and trapped moisture before we recommend anything, so a repair targets the real failure instead of the stain on the ceiling below. When a leak is active, our 24/7 emergency roof leak repair crew stops the water fast so your business can keep operating, and a full roof inspection and assessment gives you a written picture of the whole roof.
- ✓ Minimal Disruption to Your Business
- ✓ After-Hours Scheduling Available
- ✓ Written Maintenance Plans
- ✓ Safety-First Work on Every Site
What's included
What Commercial Roofing Includes
Our commercial roofing service covers the full life of a business roof — from fast commercial roof repair and full commercial roof replacement to scheduled commercial roof maintenance that prevents the next leak. Every job is planned around your operations, with safety barriers, clear communication, and a written record of what was done. Most commercial roofs we work on are flat roof or low-slope systems, and we match materials to the system already on your building.
Roof Replacement
Full commercial roof replacement when the membrane is worn out across the roof. We plan phasing, after-hours work, and weather windows so your building stays protected and operational throughout.
Maintenance Plans
Written commercial roof maintenance plans with scheduled inspections, drain clearing, seam and flashing checks, and minor repairs — plus a photo report after every visit, so nothing is left to guesswork.
Inspections & Reporting
Detailed inspections and reporting for owners, property managers, and multi-family buildings: roof condition, remaining service life, priorities, and recommended next steps in plain language.
How it works
Our Commercial Roofing Process
We walk the full commercial roof, mapping ponding areas, seam condition, flashing, drains, and every penetration from HVAC units to vents.
We scan for trapped moisture under the membrane to learn how far the damage has spread before we recommend repair or replacement.
You receive a clear written estimate with your options explained, a schedule built around your business hours, and no work starting without your approval.
Our crew carries out the agreed repair or replacement safely, keeping entrances clear, protecting the interior below, and working after hours where the job calls for it.
We hand over a written record of the work, photos, and a maintenance plan with inspection dates, so your roof stays protected long after we leave.
STEP 01Roof Survey
We walk the full commercial roof, mapping ponding areas, seam condition, flashing, drains, and every penetration from HVAC units to vents.
Tools & methods
Tools and Methods for Commercial Roofing
Heat Welder
Fuses TPO and PVC membrane seams into a single watertight sheet across large commercial roof areas.
Moisture Scanner
Finds trapped water under the membrane without cutting into it, so repairs target the true wet area.
Infrared Camera
Reveals hidden wet insulation and leak paths across a wide flat roof that the eye cannot see.
Drain & Slope Gauge
Verifies water flows to drains and scuppers instead of ponding on the low-slope roof surface.
Real results
Before and after.
Commercial Roofing
Warehouse Ponding Fix
A West Covina warehouse had standing water across a large section of its flat roof after every rain, and leaks were appearing above stored stock in the aisles below.
After: We cleared the blocked drains, replaced the saturated membrane in the ponding area, and corrected the low spots so water moves off the roof. The warehouse floor stays dry and operations were never shut down.
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Commercial Roofing
Retail TPO Seam Failure
Heat and age had pulled TPO seams apart on a retail building in West Covina, letting water under the membrane and staining the sales-floor ceiling during storms.
After: We re-welded the failed seams with a heat welder and reinforced the perimeter flashing, working after closing time so the store traded normally. The TPO roofing membrane is watertight again and backed in writing.
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Commercial Roofing
Office EPDM Puncture Repair
Foot traffic from HVAC servicing had punctured the EPDM membrane on an office roof in several spots, and every heavy rain brought new ceiling stains over the workspaces below.
After: We patched each puncture with reinforced EPDM, sealed the surrounding seams, and added walkway pads along the service routes to prevent future damage. The office stayed open throughout the work.
Book this service → Problems we solve
Problems Solved by Commercial Roofing
Commercial roofing solves the failures that threaten a business most: water where stock, staff, and customers should be dry. Here are the critical problems we fix: regular roof maintenance and yearly roof inspections catch these early, and our TPO / EPDM / PVC membrane roofing service covers the single-ply systems most commercial buildings use. For metal commercial roofs, see our metal roofing service.
Ask a pro →Ponding water on large flat roofs
We correct low spots, clear drains and scuppers, and replace saturated membrane so water leaves the roof instead of soaking through into your building.
Leaks disrupting business operations
Active leaks get a fast temporary stop first, then a permanent repair planned around your hours — so stock stays dry and your business keeps running.
Aging membrane past its service life
When a membrane is worn across most of the roof, we recommend honest commercial roof replacement with a phased schedule and a written maintenance plan.
Proof you can check
Our Trust and Proof
Our team follows NRCA guidelines and OSHA safety standards.
Contact us for a free estimate, or browse the areas we serve across the San Gabriel Valley.
We plan the work around your hours, schedule noisy or disruptive stages after hours when needed, keep entrances and customer areas clear, and stage materials so your staff and customers can move safely. Active leaks get a fast temporary stop first so trading can continue while the permanent repair is planned.
At least twice a year, in spring and autumn, and after any major storm or Santa Ana wind event. Twice-yearly inspections catch seam failures, punctures, blocked drains, and ponding early, before they become interior leaks.
Repair is right when the membrane is mostly sound and the problem is local, such as a failed seam, a puncture, or a blocked drain. Replacement is the honest answer when the membrane is worn across most of the roof, moisture is trapped over a wide area, or repairs keep failing. Our survey and moisture mapping give you a clear recommendation with options.
Yes. A written maintenance plan covers scheduled inspections, drain and gutter clearing, seam and flashing checks, minor repairs, and a report with photos after every visit, so you always know the condition of your roof and what is coming next.
Yes, our crew is available 24/7 for active commercial roof leaks. We stop the water, protect stock, equipment, and interiors, then complete the permanent repair. Call (626) 778-2088 any time.
Ready when you are
Get Your Commercial Roofing in West Covina, CA Today!
Don't let ponding water or a failing membrane disrupt your business. Contact us now for reliable commercial roofing services.
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Request an appointment
Get in Touch with Us
Tell us about your commercial roofing needs and we will arrange a survey visit for your business.
Call anytime+1 626-778-2088Email the officeinfo@roofleakrepaircovinaca.com
Office hoursOpen 24 hours · 7 days a week