Copper Sulphate Roof Moss

A brownish color indicates the moss is dead.

Copper sulphate roof moss.

Mix thoroughly and then wet the problem moss with the solution. You can find copper sulfate at stores like lowes and tru value hardware being sold as root killer dries out the roots so they break away from the sides of the pipe. Spray copper sulfate over the moss affected roof using a garden or hose end sprayer blending and applying the material at a rate of 1 4 to 1 2 ounce of material per 10 gallons of water. The sight of moss growing on a roof lends a house a romantic old fashioned air but the moss can lead to leaks and structural damage.

This product reacts electrolyticallly with water to stimulate a slow release reaction. Copper strips and copper impregnated shingles should be avoided due to copper s toxicity. See the before and after shots 1 day after fohman applied the 4 copper sulfate to the roof. Zinc and copper sulfate comes dry but can be applied as a powder or mixed with water.

The easiest and cheapest way to kill and prevent moss algae is by using a copper sulfate solution. Apply copper sulphate to a roof to kill moss and limit regrowth. Allow it to sit for 10 to 20 minutes and then rinse the solution off the roof with water. Copper is roughly 10 25 times more toxic to aquatic life than zinc.

Copper sulphate kills moss on contact making it ideal for killing moss growing on your roof. However zinc and copper sulfate may react with red bricks. The copper sulfate solution will only kill the moss if it s allowed to remain on the moss for 24 hours prior to any watering including rain. While moss on your roof or driveway is a common problem in our region some moss removal methods can pollute our streams lakes and wetlands and harm fish and plants in our waterways.

To kill moss add half an ounce of copper sulfate to 10 gallons of water.