Does wet attic insulation have to be replaced?
Usually, yes. The EPA's guidance for water-damaged materials is to discard and replace wet fiberglass insulation and wet cellulose insulation (EPA). Insulation that sits wet also holds water against the drywall ceiling below.
Read the video transcript
A roof leak soaks the attic insulation before it ever shows on the ceiling. Here is what to do in an Atlanta home. Does it have to be replaced? The EPA's guidance is to discard and replace wet fiberglass insulation and wet cellulose insulation. Check the roof deck and rafters too. The EPA lists roof materials above ceilings as a place mold hides after roof leaks. Stop more water from coming in. Georgia's insurance commissioner says to cover a damaged roof with a tarp, because most policies will not cover damage from later rain. Keep all receipts for temporary repairs. For the ceiling below, the EPA says drywall can be dried in place if it has not swelled and the seams are intact. The Red Cross says a sagging ceiling has to be replaced. The full guide, with sources, is at 404waterdamage.com.
What else should be checked in the attic?
The roof deck, rafters, the top of the ceiling drywall and any wiring near the wet area. The EPA lists roof materials above ceilings as a place mold hides after roof leaks (EPA). Bathroom fans should vent outdoors; the building code says exhaust air shall not be discharged into an attic (International Residential Code).
What does my insurer expect me to do?
Stop more water from coming in. Georgia's insurance commissioner says to cover a damaged roof with a tarp to prevent water damage from later rain, because most policies will not cover that damage (Georgia OCI). It also says to keep all receipts for temporary repairs (Georgia OCI). Washington's insurance commissioner warns that insurance won't cover water damage if you delay repairs (Washington OIC).
What about the ceiling below?
Drywall can be dried in place if it has not swelled and the seams are intact; otherwise it is removed and replaced (EPA). A sagging ceiling has to be replaced (American Red Cross).
Common questions
Can I dry attic insulation with a fan?
The EPA's guidance is to discard and replace wet fiberglass and cellulose insulation rather than dry it.
Do I need a roofer or a restoration company?
Often both. The roofer stops the leak. A restoration company removes wet insulation and dries the attic and ceiling.
Is a tarp on the roof enough for now?
A tarp is a common temporary repair. Keep the receipt and photos for your claim.
Related guides
Sources
- EPA: Mold Remediation in Schools and Commercial Buildings, Table 1
- EPA: A Brief Guide to Mold, Moisture and Your Home
- International Residential Code M1501.1: exhaust outdoor discharge
- Georgia Office of Insurance and Safety Fire Commissioner: safety tips for severe weather
- Georgia Office of Insurance and Safety Fire Commissioner: insurance claim tips
- Washington Office of the Insurance Commissioner: leaks, water damage and mold
- American Red Cross: checking your home's structural elements
Last reviewed November 13, 2026. This guide is general information, not legal, insurance or medical advice.