Attic Water Damage — Florida

AC air handler failures cause most attic water damage in Florida — not roof leaks. Florida homes typically locate the air handler (indoor HVAC unit) in the attic rather than a basement or utility closet as in northern states. The primary condensate pan overflows when the condensate drain line clogs, pouring water onto the attic floor, insulation, and ceiling drywall below. Secondary condensate drain line failures are the second most common cause. Roof deck penetration leaks (pipe boots, flashing, missing shingles from wind events) are the second category.

It depends entirely on the source. A sudden AC condensate line failure = covered sudden/accidental event (Coverage A). Gradual condensate seepage over weeks or months = excluded (gradual/maintenance exclusion). A roof leak from a specific wind event (identifiable storm, specific breach point) = covered. A roof leak from wear, age, or deferred maintenance = excluded. The distinction requires documentation: date of event, specific failure point, and moisture mapping to confirm the timeline.

Yes — wet attic insulation must be removed and cannot be dried in place. Blown-in fiberglass or cellulose insulation compresses and loses its R-value when wet, and cannot be dried adequately in place in Florida's 75–85% RH summer environment. Wet insulation also accelerates mold growth on the sheathing and rafters beneath it. Insulation removal and replacement is a separate Coverage A line item — commonly missed in adjuster scopes because it isn't visible from below. Most scopes for FL attic events include insulation removal/replacement as a standalone line.

You cannot tell from below. Thermal imaging (infrared scanning) is required to map wet insulation and wet sheathing in an attic space because damp insulation and wet sheathing are not visible without removing insulation. Thermal imaging distinguishes between evaporating moisture (cooler thermal signature) and dry material. A moisture meter grid confirms specific readings. The full extent of wet sheathing — and therefore the full scope of insulation removal and drying equipment placement — cannot be documented without thermal imaging.

The air handler unit itself may be covered under Coverage A (permanently installed mechanical equipment) if the water damage was caused by a covered sudden/accidental event — for example, if a roof leak from a covered wind event caused water to reach the air handler. If the air handler failed due to its own condensate overflow (AC caused the event), the air handler unit itself is typically not covered — you're the source, not the victim. The consequential water damage to surrounding insulation, sheathing, ceiling drywall below, and flooring below = Coverage A for the resulting damage.