How to remove mold and moss from exterior brick

Written by kaye wagner
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How to remove mold and moss from exterior brick
Use care when removing mould and moss from old brick. (old brick wall with half distroyed brick image by Cherry-Merry from Fotolia.com)

Mold is a variety of fungus that grows in excessively damp areas. If mould growth is extensive, it can decay your home's wood panelling or brick exterior. Moss is a plant that also grows in damp climates that can wear down your home's brick exterior. Prevent mould and moss from weakening your brick by removing it as soon as you notice that it is growing. Prevent mould and moss from growing in the first place by removing trees and shrubbery around your home that might prevent the brick exterior from drying out after precipitation.

Skill level:
Easy

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Things you need

  • Goggles
  • Gloves
  • Old clothes
  • Water
  • Bleach
  • Spray bottle
  • Scrubbing brush
  • Hose

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Instructions

  1. 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. 2

    Mix 1 gallon of water with 1 cup of bleach. Bleach will help loosen the mould and moss growth so that you can scrub it from the brick.

  3. 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. 4

    Let the solution sit on the brick for at least 20 minutes. This will give it time to weaken the mould and moss's hold on the wall. The bleach solution will also clean dirt and debris from the brick mortar.

  5. 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 mould and moss from the wall.

  6. 6

    Rinse the bricks with clear water from a hose to remove the moss and mould as well as the solution residue.

  7. 7

    Let the brick dry completely.

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