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Growth left too long on an asphalt roof 4-5 years. You should clean every 3 years to maximize roof life. |
After a low pressure wash you can see how the heavy moss has taken some of the grannuals off the shingles only because moss was lsft on the roof too long. |
This picture displays how moss will tear away at the shimgles all the way down to the tar which takes life away from your roof. |
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Heavy Moss. Never let it get this heavy - zinc strips don’t work either that were installed along ridge line - always use zinc powder. This roof is only 4 years old. |
Zinc powder is the best and strongest way to fight moss and fungus growth after a good clean. |
This picture shows how debris was left in a valley for an extended period of time and then cleaned. Extensive premature wear & tear on shingles. Roof blow off on valleys are very important on a yearly basis. |
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