Copper Sulphate Roof Moss

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.

Copper sulphate roof moss.

To kill moss add half an ounce of copper sulfate to 10 gallons of water. Copper is roughly 10 25 times more toxic to aquatic life than zinc. The rinsing action should carry most of the moss off the roof although you could need to sweep some patches off with a broom. 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. Copper sulphate kills moss on contact making it ideal for killing moss growing on your roof. 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 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.

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. 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. However zinc and copper sulfate may react with red bricks. Allow it to sit for 10 to 20 minutes and then rinse the solution off the roof with water.

Zinc and copper sulfate will not stain patios decks walls walkways buildings or roofs. See the before and after shots 1 day after fohman applied the 4 copper sulfate to the roof. A brownish color indicates the moss is dead. Copper strips and copper impregnated shingles should be avoided due to copper s toxicity.

This product reacts electrolyticallly with water to stimulate a slow release reaction.