Removing Moss from Roof Shingles
Steps for Preventing and Removing Moss from
By Mark J. Donovan
Moss, algae, and lichen have the
tendency to grow on roof shingles with north facing exposures. They also
have the tendency to grow in regions that have high annual rainfalls.
Removing moss from shingles can easily be done with a brush and a solution
of equal parts water and bleach. It is important, however, to remove moss
from roof shingles before the moss roots work their way too far into the
asphalt shingles. Waiting too long to remove the moss could lead to
irreparable damage to the roof shingles.
Consequently, if you have a
roof that is susceptible to moss growth, you should plan on inspecting and
removing any moss annually.
Though lichens and algae can make a
roof look ugly, unlike moss they will not threaten the integrity of the roof.
|To remove moss from roof shingles, first mix up
a 50/50 ration of bleach and water. Next, spray the grass and shrubs below
the roof line with a water hose to protect them from being damaged by the
Use a brush to apply the bleach solution onto the roof
shingles, and allow the solution to sit on the roof shingles for about 30
minutes. Then rinse the roof off and youíre done. If the moss and algae
growth are minimal, alternatively you can use a garden sprayer to apply the
I do not recommend, however, a pressure washer to remove moss from roof
shingles as it could damage them.
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Photos by Mark Donovan
To prevent moss, algae, and lichens
from growing on your roof shingles, you can install Zinc strips near the peak of
the roof. The Zink strips are installed by fastening them along the length of
the roof line, just underneath the shingle tabs, nearest the roof peak.
For more help on Shingling Your Home's Roof, see HomeAdditionPlus.comís
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