Membrane Patching
We cut out damaged sections and heat-weld or adhere new membrane that bonds seamlessly.
Commercial & residential flat roof specialists.
Flat Roof Repair in West Covina, CA
Ponding water, blistered membrane, or a leak that keeps coming back? Flat roofs fail differently than pitched roofs — and they need a crew that understands low-slope systems. StormPeak's licensed technicians repair TPO, EPDM, and built-up flat roofs across West Covina, with free estimates and every repair backed in writing.
Careful work. Honest options.
About this service
Understanding Flat Roof Repair
Flat roof repair is a specialized trade. Unlike pitched shingle roofs that shed water, flat and low-slope roofs must be fully waterproof — every seam, flashing, and drain has to hold. When any of those fail, water sits, seeps, and spreads across the deck.
West Covina's heat, UV exposure, and seasonal downpours punish flat roofing membranes. TPO can shrink and pull at seams, EPDM can puncture under foot traffic, and older built-up roofs develop blisters and cracks. Our local crew diagnoses the true failure point — then repairs it with compatible materials, so the patch bonds and lasts. Not sure where the water is entering? Start with our roof leak detection service.
- ✓ Stop Ponding Water Damage
- ✓ Extend Membrane Life
- ✓ Prevent Interior Leaks
- ✓ Peace of Mind
What's included
What Flat Roof Repair Includes
Our flat roof repairs cover everything your low-slope system needs to stay watertight — from seam welding and patching to drainage correction. For urgent situations, we also offer 24/7 emergency roof leak repair.
Seam & Flashing Repair
Failing seams, curbs, and penetrations are resealed with system-matched materials.
Ponding Correction
We address low spots and drainage so water moves off the roof instead of sitting.
Final Water Test
Every repair gets a final inspection to confirm the roof sheds water properly.
How it works
Our Flat Roof Repair Process
Our technicians walk the full roof, mapping ponding areas, blisters, and membrane damage. This survey typically takes 45-60 minutes.
We check for trapped moisture under the membrane to see how far the damage has spread before quoting.
You get a clear written estimate with your repair options explained — no work starts without your approval.
Our crew patches, welds, or reseals the damaged areas using materials matched to your roof system.
We confirm drains, scuppers, and slopes move water off the roof, then back the repair in writing.
STEP 01Roof Survey
Our technicians walk the full roof, mapping ponding areas, blisters, and membrane damage. This survey typically takes 45-60 minutes.
Tools & methods
Tools and Methods for Flat Roof Repair
Heat Welder
Fuses TPO and PVC membrane seams into a single watertight sheet.
Moisture Scanner
Finds trapped water under the membrane without cutting into it.
EPDM Primer & Adhesive
Bonds patches to rubber roofing for a lasting seal.
Drain & Slope Gauge
Verifies water flows to drains instead of ponding.
Real results
Before and after.
Flat Roof Repair
Ponding Water Fix
A West Covina warehouse had standing water near the drains after every rain, and leaks started appearing in the offices below.
After: We cleared the drains, patched the saturated membrane, and corrected the low spots. The roof now drains fully — no more interior leaks.
Book this service →
Flat Roof Repair
TPO Seam Failure
Heat shrinkage had pulled TPO seams apart on a retail building, letting water under the membrane.
After: We re-welded the failed seams and reinforced the perimeter flashing. The membrane is watertight again and backed in writing.
Book this service →
Flat Roof Repair
EPDM Puncture Repair
Foot traffic from HVAC servicing had punctured the EPDM membrane on an office roof in several spots.
After: We patched each puncture with reinforced EPDM and added walkway pads to prevent future damage.
Book this service → Problems we solve
Problems Solved by Flat Roof Repair
Flat roof repair solves the specific failures that plague low-slope roofs in West Covina. Here are the critical problems we fix: Regular roof maintenance and yearly roof inspections catch these early.
Ask a pro →Ponding water that won't drain
We correct low spots and clear drainage so water leaves the roof instead of soaking through.
Blistered or bubbled membrane
Trapped moisture blisters are cut out and patched with compatible membrane.
Failed seams and flashing
We re-weld or reseal every seam, curb, and penetration with system-matched materials.
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.
Look for ponding water that stays more than 48 hours after rain, blisters or bubbles in the membrane, visible seam gaps, and interior ceiling stains. Any of these means water is getting in — call (626) 778-2088 for a free inspection before the damage spreads.
Most flat roof problems — punctures, seam failures, flashing issues, isolated ponding — can be repaired. We only recommend replacement when the membrane is worn across most of the roof or the deck underneath is compromised. Our inspection gives you an honest answer with options.
We repair TPO, EPDM rubber, PVC, modified bitumen, and built-up (tar and gravel) roofs on both commercial and residential buildings across West Covina and the San Gabriel Valley.
Most repairs are completed in a single day. Larger commercial sections with drainage correction can take two days. You get a clear timeline in your written estimate before we start.
Yes. Our crew is available 24/7 for active flat roof leaks. We stop the water with temporary measures, then complete the permanent repair. Call (626) 778-2088 any time.
Ready when you are
Get Your Flat Roof Repair in West Covina, CA Today!
Don't let ponding water or a failing membrane damage your building. Contact us now for reliable flat roof repair services.
Schedule a Repair +1 626-778-2088 →
Request an appointment
Get in Touch with Us
Tell us about your flat roof issue and we will arrange a repair visit.
Call anytime+1 626-778-2088Email the officeinfo@roofleakrepaircovinaca.com
Office hoursOpen 24 hours · 7 days a week