Commercial Roof Repair Services

A roof problem on a commercial building is never just a roofing issue. It is a tenant issue, an operations issue, a liability issue, and if it goes on long enough, an asset value issue. We have been handling commercial roof repairs for over 30 years, working with property managers, building owners, facility directors, and business operators who need the job done right, documented properly, and completed without shutting their building down. We work on all commercial roofing systems, flat roofs, low-slope membranes, metal roofing, and built-up systems, and we bring the diagnostic experience to locate the actual source of failure rather than applying a surface patch over it. When we repair a commercial roof, the goal is a fix that lasts, backed by a written warranty, with photo documentation you can use for insurance and asset records.

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Commercial Roof Repair Services We Provide

Commercial roof failures have specific causes and require system-specific repair approaches. We repair every type of commercial roofing failure across all major system types.

Commercial Roof Leak Detection and Repair

Leaks in commercial buildings are often discovered by tenants or staff long after water has already spread through the roof assembly. We locate the true source using systematic membrane inspection, drain assessment, and interior tracing rather than repairing the most visible wet spot. Accurate leak diagnosis is what separates a repair that holds from one that fails again in the next rain.

Flat Roof Membrane Repair

Flat roof membrane failures include seam separations, punctures, blistering, and surface cracking from UV exposure and thermal cycling. We repair membranes using the correct technique for each system type, heat welding for TPO and PVC, adhesive bonding for EPDM, torch-applied or cold-applied patches for modified bitumen. Material compatibility is not optional on commercial roof repairs, and we never use the wrong method to save time.

Commercial Roof Flashing Repair

Flashings at parapet walls, equipment curbs, pipe penetrations, expansion joints, and edge terminations are the most common failure points on any commercial roof. When flashing separates from a wall or curb, water bypasses the membrane entirely and enters the building undetected. We repair and replace all flashing types using correct detailing techniques for each system, substrate, and transition condition.

HVAC Curb and Equipment Surround Repair

Rooftop mechanical units are a major source of commercial roof damage. The curbs they sit on concentrate foot traffic, create thermal stress at the membrane-to-curb junction, and vibrate constantly during operation. We repair membrane failures around rooftop units, reseal curb flashings, and address any penetration failures caused by mechanical installation or service work.

Commercial Roof Drain Repair

Blocked or damaged internal roof drains cause immediate ponding across the entire roof surface. Standing water on a commercial flat roof accelerates membrane deterioration and adds structural load. We clear blocked drains, repair damaged drain bodies and collars, and assess whether drainage slope corrections are needed to prevent repeat pooling.

Storm and Hail Damage Repair for Commercial Roofs

Hailstorms puncture single-ply membranes, crack and dislodge ballast on BUR systems, and damage metal roofing panels. High-wind events lift edge metal, pull flashings from parapets, and displace seam welds. We respond quickly to post-storm situations, assess the full scope of damage, and execute repairs before additional weather exposure makes the damage worse.

Parapet Wall and Coping Repair

Parapet walls that are cracking, have failed coping caps, or show deteriorated through-wall flashings allow water to enter through the vertical surface and migrate into the building structure below. Damage is often more extensive than the visible signs suggest. We repair masonry cracks, reseat and seal coping caps, and replace through-wall and counter-flashings at parapet terminations to stop water at the source.

Roof Coating and Sealant Repair for Commercial Buildings

Coatings on commercial roofs degrade from UV exposure, physical abrasion, and ponding water. A failed coating no longer protects the membrane underneath. We assess coating condition, prepare surfaces properly, and apply the correct coating product for each membrane type to extend service life and restore waterproofing integrity.

Commercial Roof Systems We Repair

We work across every major commercial roofing system. Each requires specific repair methods, materials, and sequencing.

TPO (Thermoplastic Polyolefin)

Heat-welded membrane repairs, seam reinforcement, and penetration flashing replacement. We use hot-air welding to ensure proper membrane fusion rather than adhesive workarounds.

EPDM (Ethylene Propylene Diene Monomer)

Lap seam rebonding, puncture patching with appropriate EPDM patches, and penetration collar replacement. EPDM repairs require adhesive compatibility, we do not mix incompatible products.

Modified Bitumen

Torch-applied or cold-applied cap sheet repairs, blister cuts and re-adhesion, and base flashing replacement. We identify whether failures are at the cap sheet or base sheet level before executing repairs.

Built-Up Roofing (BUR)

Gravel displacement, ply separation, and drain area repairs. BUR systems require understanding of the full assembly, not just the surface layer.

PVC (Polyvinyl Chloride)

Heat-welded seam repair and penetration re-flashing. PVC near rooftop equipment with grease discharge requires chemical-resistant repair materials.

Metal roofing

Panel seam re-crimping and sealing, fastener replacement, and penetration resealing. We repair both standing seam and exposed fastener metal commercial roofing systems.

Warning Signs Your Commercial Roof Needs Repair Now

Don’t wait for interior damage before addressing roofing problems. Ponding water that remains for more than 48 hours often indicates drainage failure and places constant stress on the roofing system. Visible seam separations, open membrane laps, and lifted flashing create direct pathways for water intrusion that worsen over time. Blistering or bubbling in the membrane can signal trapped moisture and may eventually rupture, leading to leaks.

Inside the building, water stains, damaged ceiling tiles, or deteriorating finishes are signs that moisture has already entered the structure. Clogged drains or scuppers can cause immediate ponding and excess roof loading, making prompt repairs essential. Damaged edge metal or drip edge components may allow water to penetrate beneath the membrane and spread deterioration along the roof perimeter. Addressing these issues early can help prevent costly repairs and extend the life of your commercial roof.

Expert Roof Work You Can Trust

Licensed, Insured & Guaranteed

Our Commercial Roof Repair Process

Commercial Roof Inspection and Damage Assessment

We inspect the full roof surface, all flashings, all drainage points, and any interior areas showing symptoms. For large roofs, we walk every section. You receive an honest, accurate assessment of what failed and why.

02

Written Repair Quote with Full Scope

You receive a detailed written quote identifying the failure locations, the repair method for each, materials involved, and total cost. No verbal estimates on commercial jobs.

03

Scheduling Around Your Operations

We confirm a repair schedule that minimizes impact on your tenants and building operations. We work early morning, evening, or weekend windows when needed.

04

System-Specific Repair Execution

Our crew executes repairs using the correct technique and materials for your specific membrane type. Every repair is done to manufacturer specifications and local code requirements.

05

Post-Repair Inspection and Documentation

Once repairs are complete, we inspect the finished work, photograph every repaired area, and confirm drainage function where relevant.

06

Written Report and Workmanship Warranty

You receive a written post-repair report with photos and a written workmanship warranty. This documentation also serves as maintenance and repair history for your asset records and insurance file.

Why Choose Us for Commercial Roof Repair

We are licensed and fully insured on every commercial project, which matters when work is happening on an occupied building with tenants and operational exposure below. Our team is manufacturer certified on the major commercial membrane systems, meaning repairs are executed to the standards that keep manufacturer warranties intact rather than voiding them through improper technique. We have 30 years of commercial roofing experience across every building type, retail, industrial, institutional, and multi-tenant and we bring that depth of knowledge to every diagnostic assessment. We schedule around your operations and communicate clearly throughout the job so your building staff always know what is happening and when.

Our commercial repair quotes are written, itemized, and fixed-price so there are no surprises on the invoice. We do not recommend scope that is not needed. If a targeted repair is the right answer, that is what we quote, not a full reroof you do not yet need. Every job ends with written documentation that serves your asset records, insurance files, and warranty compliance requirements.

Free Consultation & Quote

Transparent Pricing

No hidden fees; you know exactly what you are paying for.

Workmanship Warranty

Repairs backed by a warranty for your peace of mind.

Experienced Workforce

Skilled roofers with years of local Chicago experience.

24/7 Emergency Services

Fast response for leaks, storm damage, or ice dams.

Award Wining

Excellence You Can Trust

Frequently Asked Questions

How do you locate the source of a leak on a large flat commercial roof?

We perform a detailed inspection of the membrane, seams, flashings, and drains, then compare our findings with interior leak locations. For complex issues, we use infrared scanning or flood testing to accurately identify moisture and leak sources.

Can you repair a commercial roof without disrupting our tenants or operations?

Yes. We schedule work around your operating hours and complete repairs in phases to minimize disruption. Most tenants are unaware that repairs are taking place.

Will repairing the roof affect our manufacturer warranty?

Not when repairs are completed correctly. We use manufacturer-approved materials and methods and can provide documentation to maintain warranty compliance.

How much does commercial roof repair cost?

Minor repairs typically range from $400 to $1,200, while larger repairs may range from $1,200 to $5,000 or more. Every project receives a written, itemized quote before work begins.

Do you work with property managers handling multiple buildings?

Yes. We support multi-building portfolios with consistent scheduling, reporting, and maintenance programs tailored to property managers' needs.