How to Remove Moss From Asphalt

Written by kimberly johnson
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How to Remove Moss From Asphalt
Moss on asphalt creates a slipping hazard. (Ryan McVay/Digital Vision/Getty Images)

Moss is a green, furry plant growth that thrives in areas of high moisture and low sunlight. It does not require fertile soil to live and often clings to hard surfaces such as driveways and paths made of asphalt. Although the moss will not damage the asphalt, it does cause a slipping hazard for humans walking on it. Additionally, some homeowners simply do not like the appearance of moss. Removing it requires the use of special cleaners and abrasive cleaning methods.

Skill level:

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Things you need

  • Bucket
  • Water
  • Bleach
  • Long-handled, stiff-bristled push broom
  • Garden hose
  • Pressure washer (optional)

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  1. 1

    Fill a large bucket with 1 gallon of water and add 1.6 cups of household bleach to it, thus creating a 10-percent bleach cleaner.

  2. 2

    Pour a light layer of the bleach mixture onto the asphalt in the areas of high moss growth. Allow the bleach to sit for two to three minutes to begin killing the moss.

  3. 3

    Place a long-handled, stiff-bristled push broom on the asphalt and scrub it firmly using back and forth motions to dislodge the moss from it. Moss does not have roots and will detach fairly easily.

  4. 4

    Rinse the entire asphalt area with a spray from a garden hose to detach any remaining moss and to wash away all of loosened moss. Direct the spray to an area of the yard where there are no plants or grass, since the bleach may damage them.

Tips and warnings

  • The moss you remove will not regrow, because the bleach solution kills it. However, if the asphalt area remains moist or in the shade, it is likely that new moss will regrow later.
  • If the moss covers a large area, you can also remove it using a pressure washer to speed the process along.
  • It's a good idea to wear old clothes and shoes when removing the moss, since the bleach solution may damage them.

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