- 1). Lay plastic sheeting over the ground at the base of the brick wall. Plastic sheeting protects vegetation from the chemicals in cleaning solutions.
- 2). Scrub the brick wall with a heavy-duty scrub brush to loosen the green moss. Dislodge as much moss from the wall as possible.
- 3). Create a moss-killing solution of 1 cup of chlorine bleach and 10 cups of cool water. Mix the bleach solution in a plastic pail.
- 4). Apply the bleach solution to the brick wall to expunge all lingering moss. Using the heavy-duty brush, scrub the solution over the affected bricks.
- 5). Rinse the wall to flush away the loosened moss and bleach solution. Let the wall air-dry.
- 6). Expose the brick wall to more sunlight to discourage future moss growth. Using pruning shears, cut back nearby shrubs and overhanging tree branches.
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