What is a roof insurance supplement? A plain-English guide

What a supplement actually is

A supplement is an addition to an existing, approved claim. When work begins and hidden damage appears, or when the first estimate simply missed code-required or standard items, the supplement documents those items and asks the carrier to cover them. It is not a new claim and it is not an accusation - it is the paperwork that reconciles the estimate with the real job.

Signs your roof claim may be underpaid

Common gaps in a first insurance estimate: no line for tear-off of a second layer, no drip edge or starter strip, no ice-and-water barrier where code now requires it, no permit fee, steep-slope or high-roof labor left out, and detach-and-reset of solar, satellite, or gutters ignored. Any of these can make an approved amount fall well short of a complete replacement.

If you were paid actual cash value (ACV) only, the depreciation is usually recoverable once the work is done and invoiced - that recoverable depreciation is not the same as an underpayment, but it is money you have to claim rather than assume.

Who submits it, and how

The supplement is prepared and submitted by your roofing contractor, or by a licensed public adjuster you have chosen to hire - not by you alone, and not by a review service. It should include photos, measurements, and references to the building code or manufacturer requirements that justify each added item. The more specific and documented it is, the smoother it goes.

In Florida, a supplement has a deadline

This is the part that costs people money, and it is rarely mentioned until it is too late. Under section 627.70132 of the Florida Statutes, notice of a supplemental claim must be given to the insurer within 18 months after the date of loss. The underlying claim itself has to be noticed within 1 year.

For weather events the clock does not start when you noticed the damage. It starts on the date the hurricane made landfall, or the date the tornado, windstorm, severe rain, or other weather event is verified by the National Oceanic and Atmospheric Administration.

So a supplement is not something to leave until the contractor gets round to it. If hidden damage appears at month sixteen, the paperwork has weeks, not months. Put the date of loss at the top of your claim file and count forward from it.

These are Florida deadlines. Other states set their own, and your policy can have its own notice requirements on top - read the claim conditions rather than assuming.

What the insurer owes you in return

Florida also puts clocks on the carrier. Section 627.70131 gives an insurer 7 calendar days to review and acknowledge a communication about a claim, and requires it to begin a reasonably necessary investigation within 7 days of receiving proof-of-loss statements.

The one that matters for a supplement: within 60 days after receiving notice of an initial, reopened, or supplemental property insurance claim, the insurer must pay or deny that claim or a portion of it. The statute names supplemental claims specifically, so a supplement is not a request that can sit indefinitely without an answer.

The statute does allow extensions for factors beyond the insurer's control. But knowing the default means you can ask where a supplement sits rather than waiting and hoping - and a dated, documented submission is what starts that clock.

How to prepare - and where ScopeCheck fits

Before any supplement, it helps to know exactly where your insurance estimate and your contractor's estimate diverge. ScopeCheck compares the two in plain English and flags the differences, so you understand what is being requested and why. It is educational only: it does not adjust, negotiate, or submit claims. Use it to walk into the process informed, then let your licensed contractor or adjuster handle the filing.

One item worth checking before you file: whether any of the additions are driven by building code rather than by storm damage. Those are covered by a different part of the policy, and our guide at /learn/ordinance-or-law-coverage-florida explains how that works in Florida.