At a glance
- Who
- Homeowners with wet drywall or insulation after a storm, leak or flood.
- What
- FEMA: remove all drywall and insulation that was in contact with floodwaters. EPA and FEMA: dry within 24 to 48 hours or discard.
- When
- Start drying right away. The 24 to 48 hour window is the one both agencies name.
- Where
- Any room in the home. Permits depend on the scope and whether you are in a flood zone.
- Why
- EPA ties drying within 24 to 48 hours to preventing mold growth.
The short answer
If drywall and insulation touched floodwater, FEMA's guidance is to remove all of it. If material got wet some other way, EPA says to dry water-damaged areas and items within 24 to 48 hours, and FEMA says items that cannot be properly cleaned and dried in that time must be discarded.
So the question is not how wet the wall looks. It is whether it can be fully dried fast enough, and whether floodwater was involved.
What the two agencies actually say
- EPA (guide updated February 18, 2026): "dry water-damaged areas and items within 24-48 hours." EPA ties this to preventing mold growth.
- FEMA (mold fact sheet, updated January 21, 2025): items that cannot be properly cleaned and dried within 24 to 48 hours must be discarded.
- FEMA (fact sheet dated July 16, 2025): remove all drywall and insulation that has been in contact with floodwaters.
You may hear a name for cutting wet drywall off partway up a wall. We did not find that term in the official sources we read, so we do not use it here. We use FEMA's wording.
The federal pages we read do not give a cut height or a rule by insulation type. Where a cut stops is a decision made on site, by looking at the wall.
Wet drywall in your home?
Leave your name and number. We call back by the next business day to set up a free in-home visit and written estimate.
Prefer to talk now? Call or text (941) 284-2218.
How to tell what you are dealing with
Three questions help sort it out.
- Did floodwater touch it? If yes, FEMA says remove the drywall and insulation.
- Has it been more than 24 to 48 hours? If wet material has not been dried in that window, treat it as something that may need to be discarded.
- Is there mold? EPA says a do-it-yourself cleanup applies when the moldy area is less than about 10 square feet. Larger areas are a job for a professional. See our guide on mold after water damage.
When in doubt, an in-person look is better than guessing. Photos do not show what is inside a wall.
Do you need a permit to replace drywall?
Maybe not. Manatee County's post-storm guidance says drywall repair outside a flood zone may not need a permit, and the scope of work decides. If your home is in a flood zone, a Substantial Damage Review is required first. The guidance also says to obtain permits before starting repairs.
Check with the building department for your address: Manatee County Building and Permitting is at 941-748-4501 ext. 3800. The city of Palmetto and the city of Bradenton run their own permitting. The county's page is dated February 12, 2025, so check for a newer one.
What happens after the wet material is out
Once the wet drywall and insulation are removed, the framing needs to dry. Only then does new drywall go up, followed by taping, finishing and paint. For the full order of events after a storm, see our guide on storm damage repair steps.
If your insurer is covering the loss, tell them before you tear anything out and ask what they need from you. We do not have an official source on how to document damage before cleanup, so ask your insurer directly.
How Hildebrand handles water-damaged drywall
Hildebrand does home restoration after storm or water damage: drywall, framing and finish work. We also do drywall and painting. We document the damage and coordinate the construction scope with your insurance adjuster, then rebuild to code. We do not negotiate your claim.
We do not do mold remediation. If your home needs it, that is done by a separate professional, and the rebuild follows. Where plumbing or electrical work is part of the repair, licensed trade partners we manage and coordinate do it.
We are open Monday to Friday, 8 AM to 5 PM, with no emergency or after-hours service. The visit and written estimate are free. The price does not change without your written approval.
Questions homeowners ask
How long can drywall stay wet before it has to be replaced?
EPA says to dry water-damaged areas and items within 24 to 48 hours, and FEMA says items that cannot be properly cleaned and dried in that time must be discarded.
Does insulation have to be removed too?
If it was in contact with floodwaters, yes. FEMA says to remove all drywall and insulation that has been in contact with floodwaters.
Do I need a permit to replace water-damaged drywall?
Manatee County says drywall repair outside a flood zone may not need a permit, and the scope of work decides. In a flood zone, a Substantial Damage Review is required.
Can I just paint over a stained wall?
The official sources we read do not cover painting over stains. They say wet material that cannot be dried in 24 to 48 hours should be discarded. Have the wall looked at before covering it.
Get the wet drywall looked at
Get a free in-home consultation and written estimate from a Florida licensed general contractor serving Manatee and Sarasota Counties.