How Long Should a Tarp Stay on a Roof After Storm Damage?
A blue tarp on a roof means something different depending on when you're looking at it. Two weeks after a hailstorm, it's just a homeowner keeping water out while they wait on an adjuster. Eight months later, on a policy that's up for renewal, it's a different animal entirely.
The normal window
Most tarp jobs are meant to last 30 to 90 days. That window covers the realistic stretch of events after a storm: the roofer gets the call, the adjuster inspects, the estimate gets written, materials get ordered, and a crew gets scheduled. In a bad catastrophe year, with every contractor in the county booked solid, that window can stretch past 90 days without anything being wrong. Supply delays on architectural shingle in particular have pushed some legitimate repairs well past the three-month mark.
Tarps themselves aren't built for much longer than that anyway. A standard poly tarp starts degrading under UV exposure somewhere around the 60-90 day mark, depending on thickness and how it was fastened down. Past that, you're not looking at "temporary protection" anymore. You're looking at a tarp that's becoming part of the roof's ongoing condition, which is its own problem for a covered claim and a different problem for you.
When it stops being routine and starts being a flag
The useful line for a renewal review isn't a strict day count. It's whether the tarp is still doing the job it was put there to do, or whether it's weathered, torn at the edges, held down with mismatched boards and cinder blocks, or layered over a patch that's clearly been there through more than one season. A single tarp spotted on current imagery, cleanly fastened, is consistent with an open claim in progress. A tarp that shows up on this year's renewal imagery in roughly the same condition it showed up in last year's is a different story, and it usually means the repair never happened, the claim stalled, or the homeowner is managing damage without ever filing one.
That second case is the one that actually matters for a renewal decision. A roof under a tarp for a year or more has had water finding its way under the edges through every rain event in between, whether or not the tarp looks intact from above. Decking rot, mold in the attic, and compromised sheathing don't show up in a satellite pass, but a long-sitting tarp is usually the visible marker that they're accumulating underneath.
Patching tells a related but separate story. A roof with multiple generations of patch material, mismatched shingle color from a partial replacement, or a tarp over what looks like a patch job that didn't hold, points to a maintenance pattern rather than a single storm event. That's worth distinguishing from the tarp-after-a-named-storm case, because it changes what you'd ask the insured for: a completion timeline in one case, a fuller roof history in the other.
Working this into a renewal review that doesn't involve a site visit
None of this requires sending anyone out to the property. A tarp, a patch, or a line of stress staining running down from a flashing point is visible in a current, high-resolution image taken from above, which is the same information a field inspector would be noting on a windshield survey anyway, just without the windshield. The question for a book-wide renewal pass isn't whether any one address has a tarp on it today. It's which addresses on the book have one that's been there long enough, or looks weathered enough, to be worth a call before the renewal goes out.
That's the sorting problem Roof Scoring was built around: reading roof condition, including tarps, patch work, and granule loss, off annual VHR imagery for every address in a renewal book, so the ones actually worth a second look don't get lost in a stack of files that otherwise look fine from the street.
If a tarp-on-renewal question keeps coming up across your book and you're tired of chasing it address by address, it might be worth seeing what a per-address read looks like before your next renewal cycle runs.