On a medical office roof, the warranty usually gets voided by a phone call that never happens. A mechanical contractor mounts a new rooftop unit, cuts three penetrations, caulks around them and leaves. Nobody tells the manufacturer, nobody tells the roofer, and the next leak lands on a roof the warranty no longer covers. A manager should check the warranty terms before any trade goes on the roof. Warranty management keeps the paper, the roof and the trades lined up, so the coverage the owner paid for is still there when it is needed.
Kinds of Warranty and What They Cover
Two documents are often confused. A manufacturer warranty covers the roofing materials, and sometimes the installed system, against defects for a stated term. A workmanship warranty from the installing contractor covers the quality of the installation for its own term. Some roofs carry both. Some carry only one, and some, after years of repairs, carry neither in practice.
Terms differ by manufacturer, by system and by the grade of warranty purchased. Coverage can include or exclude ponding water, wind speed above a limit, damage from foot traffic, or leaks that start at penetrations installed after the roof. We do not state any term as a rule. The first step is always to read the document the owner holds.
Transfer matters too. Many warranties are tied to the original owner or need a notice and a fee when the building sells. A buyer who assumes coverage passed automatically may find otherwise. We flag the transfer clause in the file so it is handled at closing instead of after the first leak.
Building the Warranty File
We assemble one file per roof, and it sits beside the roof register. It holds the warranty certificate, the specification it refers to, the installation date, the contractor's name, the system description, the registered owner and the contact for claims. It also holds the notice rules: how many days the owner has to report a leak, who must be told and what must be done before repairs begin. These items are routinely missing from the folder that comes with a building.
When the paper is lost, we help trace it through the original contractor, the building's closing documents or the manufacturer's records. The warranty cannot be managed until someone knows what it says, and many owners are surprised by what the document asks of them.
What Quietly Voids Coverage
Four actions cause most warranty trouble. The first is unapproved repairs by a contractor the manufacturer has not accepted. The second is new penetrations or equipment added without notice. The third is missed maintenance, such as drains left clogged until the roof ponded. The fourth is a change to the roof, a coating or an added layer, that the warranty does not allow.
Each is easy to prevent. A single rule covers the first two: nobody goes on the roof without a log entry and a call to the warranty contact. A rooftop equipment installer should know before the work begins that the roof has coverage, and who to call about the flashing.
The trades are the hard part. HVAC crews, sign installers, antenna companies and electricians all reach the roof for their own reasons. Posting the warranty contact at the roof hatch and requiring a sign-in sheet catches most of them. When an uncleared crew has already been on the roof, the right move is to inspect and document the work, not to hope nobody notices.
Maintenance as a Warranty Condition
Many warranties expect regular maintenance, and they may ask for proof. A scheduled maintenance program produces that proof: dated visits, photographs of cleared drains, notes on repairs. When a claim comes up, the owner hands over the record, and the question of neglect has an answer.
Ida's record hour of 3.15 inches in September 2021 makes the drain record matter on any roof that ponded afterward. If the log shows the strainers were clear the week before, the owner is in a stronger position than one with no log at all.
Making a Claim
When a leak appears on a warrantied roof, the order of steps matters. Stop the water with a temporary measure, document the damage, check the notice rules and give notice in writing within the stated window. Do not start permanent repairs until the manufacturer has had a chance to inspect, unless the warranty allows it. We prepare the notice package: photographs, moisture map, the roof description and the date of first discovery.
The manufacturer will send an inspector. We can meet them on the roof and answer questions about the system. We do not speak for the manufacturer or promise a result. Our job is to make sure the roof's record is complete and the temporary repair did not disturb the evidence.
Keep every receipt for the temporary repair. Many policies and warranties reimburse reasonable emergency costs when they are documented, and some do not. The file notes which applies, so the superintendent knows what to keep before the first storm.
Where Warranties Matter Most
Newer and larger roofs carry the most value in coverage. Montefiore's Bronx campuses sit in Norwood, Morris Park and Wakefield, and a hospital or medical office roof tends to carry tight rules about penetrations and access. In Morris Park and elsewhere, a recent re-roof is worth protecting with a file, a log and a clear process for trades.
Older walk-ups often have no warranty left, and for them the record is the next best thing. A registered log of repairs, with dates and photographs, tells a buyer, an insurer and the next roofer what was done and what held.
Cost, Code and Handover
A warranty file review is a short engagement: gather documents, walk the roof, compare the roof to the paper and report gaps. Price follows the number of roofs and the state of the records. Ongoing management, logging every trade visit and scheduling maintenance, is billed by the visit or by the year. The Department of Buildings distributes the 2022 NYC Construction Codes. Call them first. When a building is sold, the file goes to the buyer with the roof report, and the condition report shows the roof's state at handover.
Commercial Roofing Questions
How do I find out whether a roof still has a warranty?
Start with the closing documents, the original contractor and the property file. Look for a certificate with a term and a registration number. If nothing turns up, the manufacturer may have a record by the building address or the original contractor's name.
Does a coating or recover void the warranty?
It can, depending on the document. Some warranties prohibit coatings or added layers, and some allow them with approval. We read the terms first, and if the warranty has value, we ask the manufacturer in writing before work begins.
Who can repair a roof that is still under warranty?
The warranty says. Some require the original installer, some any approved contractor, and some allow minor repairs by the owner. We check the document and tell you before touching the roof.
What should a tenant know before putting equipment on the roof?
They should know the roof has coverage, who to call, and that every new penetration needs approval and a flashing detail. A one-page rule sheet kept at the roof hatch works well.
Is a warranty worth keeping on an old roof?
If it has years left and the roof is sound, yes, and the file is cheap to maintain. If it is about to expire, a final inspection before the end date can catch defects while they are still covered.
Send the Warranty Paper and the Roof Age
Send whatever warranty paper you have, the roof age, the building type and the last tenant complaint, and ask for a flat-roof walk before anyone writes a scope. We will compare the paper with the roof.
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