What a cosmetic damage endorsement does
This endorsement carves out coverage for cosmetic damage: dents, dings, scratches, or discoloration to roofing (especially metal roofs), gutters, vents, screens, or siding that, in the carrier's view, do not affect the item's ability to function or keep water out. When it is on your policy, the carrier can pay for structural or functional damage but deny the aesthetic portion, even though the panels no longer match and the marred surface is plainly visible.
How Florida carriers apply it
These endorsements have become common on Florida wind and hail policies, often on metal or tile roofs. The dispute is almost always about where cosmetic ends and functional begins. A dented metal panel may still shed water, but denting can void the manufacturer's warranty, and mismatched replacement panels raise a matching problem. Read your declarations page and endorsement schedule before a storm: if a cosmetic endorsement is attached, you carry the aesthetic risk; if it is not attached, the carrier cannot invent a cosmetic exclusion after the loss.