What Does Black Mold Look Like on Drywall?

Black mold growth on drywall usually starts as small, dark spots. These spots can quickly expand into larger patches or streaks with an irregular, fuzzy border. The color ranges from a deep, saturated green to a stark black. You might also notice a yellowish stain surrounding the dark growth, which is a sign of the underlying water damage that must be repaired to stop the mold. This staining on the paper facing of the drywall indicates prolonged dampness.

Mold needs constant moisture, so inspect areas that have been wet or remain damp. Check behind furniture, inside closets on exterior walls, and around plumbing fixtures. Pay close attention to the bottom few feet of walls, corners, and areas near windows or air conditioning vents. Any surface that has experienced a slow, hidden leak is a prime location for colonization, as drywall readily absorbs and holds moisture.

• Along baseboards and wall trim.
• Behind sinks, toilets, and shower enclosures.
• On walls adjacent to washing machines or water heaters.
• In corners of rooms with poor air circulation.
• On ceilings below bathrooms or kitchens.
• Around windows where condensation collects.

If you discover suspected mold, limit disturbance to avoid spreading spores. Do not attempt to scrub or bleach it, as this can aggravate the problem and is unsafe for larger areas. The source of the moisture must be fixed first by a plumber, roofer, or water damage pro. For safe assessment and removal, contact a qualified mold professional. They have the training to handle it correctly and protect your home's air quality. You should also improve ventilation in the area and keep the space dry while waiting for help.