How to Kill Moss on a Brick Patio

Moss on a brick patio can be a hazard as it increases the risk of slipping over on the patio. If you want to get rid of moss from your patio, there are a couple of methods that will work. If you have moss on your patio, chances are there will be mildew as well (usually patches of black stain) and the moss removal should remove the mildew as well.

Power washer
Bucket
Rubber gloves
Face mask and goggles
Chlorine bleach
Hard-bristled scrub brush

Instructions

- 1
  Spray the patio with the power washer, using a low setting at first then upping the setting to achieve a power level that strips the moss without damaging the brick. A power washer of around 2500 pounds per inch should be adequate; over 3000 psi will damage the bricks.
- 2
  Inspect the patio after the first round with the power washer and spot-wash any patches of moss that still cling to the patio brick using the power washer.
- 3
  Put on your rubber gloves, face mask and goggles and mix a bucket of water with 10 percent chlorine bleach. This will kill the remaining moss spores in the brick and prevent regrowth.
- 4
  Scrub the patio with the chlorine bleach solution and a hard-bristled scrub brush to remove the final traces of moss.

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