Trusted Commercial Roof Repair Experts
A leaking commercial roof threatens your inventory, equipment, and daily operations. At Mimar Construction, we understand the urgency of commercial roof repairs and respond quickly to protect your business. Our team has extensive experience with every type of flat and low-slope roofing system used on commercial buildings throughout Northern New Jersey and Connecticut.
Whether you manage an office building in Ridgewood, a retail center in Greenwich, or a warehouse in Montclair, our certified technicians diagnose the root cause of leaks and deliver lasting repairs — not temporary patches. We specialize in flat roof repair for commercial properties across Bergen County and Fairfield County, with the expertise to handle everything from minor membrane punctures to major storm damage.
Commercial Roofing Systems We Repair
- EPDM (Rubber Roofing): Seam repairs, puncture patching, membrane reattachment, and flashing restoration for single-ply EPDM systems
- TPO (Thermoplastic Polyolefin): Heat-welded seam repair, membrane patching, and flashing detail work for TPO roofing
- Modified Bitumen: Torch-down repairs, cold-applied patch systems, and seam resealing for mod-bit roofs
- Built-Up Roofing (BUR): Blister repair, gravel resurfacing, flood coat restoration, and flashing repairs for multi-ply built-up systems
- Metal Roofing: Panel resealing, fastener replacement, and flashing repairs for standing seam and corrugated commercial metal roofs
Our Commercial Roof Repair Process
- Emergency Response & Assessment: We respond quickly to your call, perform a thorough roof inspection, and identify all areas of concern using infrared moisture scanning when needed.
- Detailed Report & Estimate: You receive a clear, written report of findings with photo documentation, along with a transparent repair estimate — no hidden costs.
- Professional Repair: Our certified crew executes repairs using manufacturer-approved materials and techniques, ensuring warranty compliance.
- Quality Verification: Every repair is inspected and tested to confirm watertight performance before we consider the job complete.
- Preventive Recommendations: We provide maintenance recommendations to extend your roof's life and prevent future issues.
Commercial Roof Repair Projects
Frequently Asked Questions
Yes. We offer emergency commercial roof repair services 7 days a week throughout Northern NJ and CT. When you have an active leak threatening your business, we prioritize rapid response. Call us at (201) 466-4543 for immediate assistance. We typically respond to emergency calls within hours and can deploy temporary waterproofing measures while we plan a permanent repair.
Several factors determine whether repair or replacement is the better investment. If your roof is less than 15 years old and the damage is localized (isolated leaks, small punctures, or limited seam failures), targeted repairs are usually the most cost-effective approach. However, if your roof has widespread ponding water, multiple leak points, extensive membrane deterioration, or is nearing the end of its expected lifespan, a full replacement may save you money in the long run. During our free inspection, we provide an honest assessment and help you weigh the costs of ongoing repairs against the value of a new system.
Flat roof leak detection requires experience because water can travel horizontally along the roof deck before entering the building, making the leak source far from the visible damage inside. We use a combination of visual inspection, infrared thermal imaging, and moisture probing to pinpoint exactly where water is entering. Infrared scanning detects trapped moisture within the roof assembly that is invisible to the naked eye. This precision approach means we repair the actual problem — not just the symptom — saving you from repeated service calls.
We plan every commercial repair to minimize disruption to your operations. Most flat roof repairs can be completed from the roof surface without requiring interior access, and many repairs are finished within a single day. For more extensive work, we coordinate scheduling around your business hours and can perform work during evenings or weekends when needed. We also maintain a clean, organized jobsite and communicate clearly throughout the process so you always know what to expect.
Commercial roof repair costs vary based on the roofing system type, extent of damage, accessibility, and materials required. Minor repairs such as seam resealing or small patches may cost a few hundred dollars, while more extensive repairs involving membrane replacement, insulation, or structural work can be significantly more. We provide free, detailed estimates after our inspection so you know exactly what to expect. We never recommend unnecessary work — if a simple repair will solve the problem, that's what we recommend.
"We had a serious leak in our office building during a rainstorm. Mimar responded the same day, stopped the leak, and came back to do a permanent repair the following week. Their team was professional, fair on pricing, and communicated everything clearly. We now use them for all our commercial roof maintenance."
Commercial Roof Repair Service Areas
We provide commercial roof repair throughout Northern New Jersey and Connecticut, including: