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How do you kill black algae on your roof?

In: Lawns and Grass, Mycology or Fungi [Edit categories]

Answer:

To just KILL Roof Algae, simply spray it with some Copper or Zinc Sulfate mixed with water.

1 8 oz cup of copper sulfate per gallon of water will kill any plant growing on a roof, and provide lasting protection against re growth for awhile.

Be sure and wet ALL plants and grass down before application.

It can be applied with a pump up sprayer.

The Roof Algea will die, and so will roof moss, and roof lichens!

Eventually, the rain will wash the dead plant matter away, but it does take a long time.

First answer by ID3633100636. Last edit by Apple Roof Cleaning Tampa. Contributor trust: 5 [recommend contributor ]. Question popularity: 11 [recommend question].

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