The active ingredient for some moss killers is zinc sulfate monohydrate usually at concentrations of 99.
Zinc sulfate roof moss killer.
Apply the zinc sulfate at a rate of 3 pounds for every 600 square feet of space as recommended by.
Sprinkle a product that contains the main ingredient zinc sulfate over the moss you wish to kill.
Zinc sulfate is toxic to fish and other invertebrates.
According to the manufacturers zinc sulfate will not stain roofs or corrode aluminum and galvanized gutters.
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Gently remove the rest with a wire or nylon brush.
The technique most roofing contractors use when putting a zinc sulfate or zinc chloride compound is conducive to killing moss in patches creating a dalmatian like pattern.
Zinc sulfate general information.
Zinc is known to be toxic to fish and ncap does not recommend this as a first option.
As rain runs over the strips zinc drips down your roof.
It will also corrode all of your fasteners allowing water to get underneath your shingles causing costly roof leak repairs.
If you collect water from your roof in rain barrels avoid using the water for your vegetable garden.
Over time as rain falls zinc residue coats the roof to prevent moss growth.
Among the products to use with caution are zinc potassium salts of fatty acids and oxidizing bleaching agents that do not contain chlorine.
To use zinc sulfate one can apply powder directly to moss areas.
One brand name is moss b ware.
With either treatment method some moss will slough off naturally as it dies.
Zinc strips can be installed at the top of your roof to prevent moss from growing.
If you install zinc strips or zinc impregnated composition roofing ensure that roof runoff doesn t flow directly into storm drains streams or other bodies of water.
Moss is more than just ugly it can dam and divert water runoff causing water to leak into your home.
However while mixing and spraying a zinc sulfate solution you must be careful to protect the surrounding vegetation and watershed.