More about Moss Removal

The Northwest is a hostile environment for roofs. All the “liquid sunshine” we get makes our roofs damp, which causes moss and algae grow like crazy. Not only are they an eyesore, but they reduce the life of your roof.

So what’s the answer to mold and algae? Prevention. The best plan of attack is to never let the moss and algae take root. And with a yearly maintenance spray of your roof, we can help keep the moss and algae from ever growing.

And if your roof is already being taken over, give us a call. We’ll remove the moss and algae with a thorough wash, and then come back regularly to make sure they never return.

What are my options?


Step one: Prevention, let us treat your roof with a zinc spray every year to keep the moss and algae from ever growing.

Step two: You have moss and Algae. Let us manually (gently as possible) remove the moss and do a light pressure wash to remove the algae. Then we will do the zinc spray to keep it from coming back.

Why is algae bad for roofs?


The algae feed on inorganic filler materials such as calcium carbonate in asphalt shingle. This loosens the granules that the inorganic material holds in place. When the asphalt granules are loosed and fall off your roof your roof life is greatly reduced.

Why is moss bad for roofs?


Moss holds moisture on the roof, it lifts shingles and draws moisture up underneath the shingles, causes
water to back up in valley producing leaks, clogs gutters and downspouts, produces airborne spores which produces moss all over the neighborhood, and when it is knocked off it takes shingle particles with it. Plus, the look brings down property value.