Copper Sulfate Crystals For Roof Moss

A brownish color indicates the moss is dead.

Copper sulfate crystals for roof moss.

Unlike the chlorine component in sh which flashes off reverting back to the salt water from whence it came the copper stays put. If the moss is growing in thin layers spraying it with a copper sulphate solution kills it right away and the dead moss can easily be washed off the roof with a hose or pressure washer. Copper sulfate kills moss on contact making it ideal for killing moss growing on your roof. Zinc strips general information.

Copper salts are really reactive with metal so your steel zinc and any cast iron is in peril. This solution has some residual jul 19 2014 watch the fohmertoo spray 4 copper sulfate on a roof. See the before and after shots 1 day after fohman applied the 4 copper sulfate to the roof. Skylights are surrounded by galvanized flashing that has suppressed the growth of mosses below the skylights.

The easiest and cheapest way to kill and prevent moss algae is by using a copper sulfate solution. Also copper sulfate and zinc sulfate comes both as a zinc powder and as zinc sulfate can leave yellow white deposits on some stones which are more acidic or are exposed to acidic lawn fertilizer so generally the pure zinc powder is a safer bet on paving generally leaves little color change and washes off pretty well though leaving it in. 500 to 600 square feet per gallon 25 foot projection. You can also wash moss off with a copper sulfate solution one half ounce to 10 gallons of water.

If the moss is growing in thin layers spraying it with a copper sulfate solution kills it right away and the dead moss can easily be washed off the roof with a hose or pressure washer. 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. 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. Unlike the salts in sh the action is more highly galvanic.

You dissolve the crystals by suspending them in water 1 gal per 16 oz. 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. Zinc strips are usually considered the long term solution to controlling mosses see photo at right.