Black Mold & Bleach Spraying

Black mold is caused by the fungus Stachybotrys atra—one of the most dangerous of all molds. If this mold starts growing in your house, it must be removed. A bleach solution is your best weapon for destroying black mold.

Identification

• Black mold is actually a greenish black color and tends to grow on material with a low nitrogen content, such as drywall board and fiberboard.

Considerations

• Black mold requires constant moisture for growth and tends to grow in ceilings and walls that have suffered from water leaks or flooding. Dripping pipes and excessive humidity can also encourage mold growth.

Warning

• When cleaning black mold, it's important to take precautions to avoid inhaling particles. You should always wear a mask, as well as gloves and eye protection.

Cleaning Solution

• To destroy black mold, you can use a solution of 10 percent bleach and 90 percent water. Spray the solution on walls and porous surfaces and allow to dry. On nonporous surfaces, spray the solution, then wipe it off completely.

Prevention

• To prevent a recurrence of black mold, use paints that contain mold inhibitors; a dehumidifier during humid times; and an exhaust fan in high humidity areas like bathrooms and laundry rooms. You should also weatherize your house and stop any pipe leaks.