How to Spray to Kill Moss on a Roof

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Roof moss is a common annoyance for many homeowners. Not only does it look unappealing, but it can also damage the structure of the roof over time. The damp moss can often accelerate the decomposition of asphalt roofing shingles and cause you future headaches. Thankfully for those distraught homeowners with a moss problem, the moss can be removed from an asphalt shingled roof rather easily with the application of a household product. Once applied, you can quickly remove the moss and restore the appeal of your home

Things You'll Need

  • Household bleach
  • Water
  • Garden sprayer
  • Drop cloths
  • Push broom
  • Garden hose
  • Fill a garden sprayer with equal parts household bleach and water. Pump the garden sprayer as instructed in the user manual to prepare it for spraying.

  • Cover plants below the roof and surrounding the house with drop cloths to protect them from the bleach application.

  • Remove any loose moss on the roof with a push broom.

  • Soak the shingles growing moss on your roof with the bleach in the garden sprayer.

  • Wait 15 to 25 minutes for the bleach to actively break apart the moss and any mold/mildew that is also on the roof.

  • Thoroughly scrub the roof with the push broom again to pull up the moss and clear away debris.

  • Spray down the roof using a garden hose to rinse the bleach away.

References

  • Photo Credit Jupiterimages/Photos.com/Getty Images
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