Serving NYC & Long Island

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Commercial roof leak detection, NYC

Commercial roof leak detection in New York City means finding an entry point on a roof crowded with mechanical equipment, pavers, curbs and access paths — any of which can be the source. We survey the field thermally after sunset, map the saturated area, and identify which penetration is actually failing rather than recommending that every flashing detail be redone.

Infraspection Institute Certified Infrared Thermographer seal

Certified Infrared ThermographerInfraspection Institute · FLIR E96 & T865

Aerial thermal image of a large low-slope commercial roof at dusk, cool where dry with warmer patches near curbs and drains.
A roof field after sunset. The warm areas are where the survey concentrates.

Equipment, curbs and pavers

A tower or multifamily roof in the city is rarely open field. Condensers, duct runs, antenna mounts and paver walkways interrupt it, and each penetration through the membrane is a candidate.

Surveying identifies which of them is leaking. That distinction is the difference between a targeted repair and a proposal to re-flash the entire roof.

Findings a board can act on

Reports pair thermal and visual images with a marked plan and the extent of saturation, in a format a managing agent, board or carrier can use directly.

Access is arranged with building staff in advance, since surveys typically run in the evening.

  • Co-op and condo buildings
  • Multifamily and mixed-use
  • Office and commercial towers
  • Hotels
  • Schools and institutions
  • Industrial and loft conversions

Common questions

Commercial roof leak detection, NYC — answered.

Do you need to access apartments to find a roof leak?

Usually only the units reporting damage, and often not even those. The survey happens on the roof; interior access is used to confirm where water is exiting, not to search for it.

What if the roof is under warranty?

A documented survey is exactly what a warranty claim needs. Identifying saturation before the warranty period closes is frequently the difference between the manufacturer's obligation and your expense.

Why us and not a plumber

We write the report. We never bid the repair.

A plumber who finds your leak also sells you the repair. A roofer who inspects your roof also quotes the replacement. That isn't dishonesty — it's structure, and it quietly shapes every finding. We are an independent diagnostic company: we do not perform repairs, we do not sell materials, and we take no referral fee from any contractor. The report is the entire product, so there is nothing for us to gain by finding more than is there.

No repair revenue

We can't profit from the work we recommend, because we don't do the work. If your roof is 8% wet, the report says 8% — not "replace the field."

No referral fees

We accept nothing from contractors for sending work their way. Take our findings to your own plumber, roofer, or electrician, or put them out to bid.

Findings that carry weight

Boards, managing agents, and insurance carriers treat an independent finding differently than an estimate from the company that wants the job.

We'll tell you it's nothing

Sometimes the answer is condensation, or a warm duct, or a neighbor's roof. We're paid the same either way, so we say so.

Read why independence matters →

Request an inspection in your building

Tell us what you're dealing with.

Send the details and we'll come back with a scope, a time window, and a price — including what the survey covers and what it doesn't.

Direct line

(516) 234-5012
Or call (516) 234-5012

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We'll review the details and follow up within one business day.

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