How Do I Clean Mold From a Masonary Inside Wall?

Hydrogen Peroxide

1). Put on gloves and a face mask to protect yourself from the mold. Pour 1 cup hydrogen peroxide and 2 cups hot water in a spray bottle. Shake to mix well.
2). Spray the affected areas of the wall with the peroxide solution, and let it sit for at least an hour. Respray the wall, then remove the mold with a scrub brush. Continue to scrub the wall until all of the mold is removed.
3). Rinse the wall well with a sponge and hot water.

1). Fill a spray bottle with white vinegar. Do not add water.
2). Spray the moldy walls with the vinegar. Do not rinse.
3). Wait a day or two, and respray the walls with straight vinegar to ensure that all of the mold is gone.