Mold on Drywall: Can It Be Cleaned or Must It Go?

If the mold is only on the surface and the drywall is still firm, you can try cleaning it. Use a mild detergent and water, or a mix of vinegar and water. Scrub gently, then dry the area completely with fans or a dehumidifier.

Cleaning only works if the mold has not soaked into the paper facing of the drywall. If you see dark spots that return after cleaning, the mold has likely penetrated deeper. In that case, replacement is the honest answer.

• Surface mold on painted drywall may be cleanable
• Drywall that is still hard and dry can be cleaned
• Use a sponge and soapy water, not bleach
• Dry the area thoroughly after cleaning
• If mold returns, it is deeper than the surface

For a small patch, first fix the water source. If a leak is still active, stop it before any cleaning or removal. Then, use a spray bottle with water and a little dish soap to dampen the moldy area. This keeps spores from flying into the air.

Cut out the damaged drywall with a utility knife, cutting about a foot beyond the visible mold. Place the removed piece in a plastic bag and seal it. Dry the open cavity with fans for a day or two before installing new drywall.

If the mold covers more than a small patch, or if you feel unwell from the smell or spores, call local water damage pros. They have the equipment to test moisture levels and the experience to know what must go. For large areas, a mold professional is the right call.

The pros can also handle the drying and dehumidification that follows removal. They will make sure the cavity is completely dry before new drywall goes in. For severe cases, you might also need to check your policy. Policies vary, and your insurer decides what is covered.