- 1). Put on goggles and gloves to protect yourself from potentially harmful bleach fumes. Wear old clothes if you are concerned about bleaching your clothing.
- 2). Mix 1 gallon of water with 1 cup of bleach. Bleach will help loosen the mold and moss growth so that you can scrub it from the brick.
- 3). Pour the solution into a spray bottle and spray the entire surface of the exterior brick. Do not spray the solution directly onto any plants that you want to keep, such as ivy or shrubs.
- 4). Let the solution sit on the brick for at least 20 minutes. This will give it time to weaken the mold and moss's hold on the wall. The bleach solution will also clean dirt and debris from the brick mortar.
- 5). Scrub the solution with a scrubbing brush. Be careful not to scrub the brick mortar too vigorously if your bricks are old. Scrubbing will completely remove the mold and moss from the wall.
- 6). Rinse the bricks with clear water from a hose to remove the moss and mold as well as the solution residue.
- 7). Let the brick dry completely.
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