Moss killing products are generally grouped into to main types.
Is zinc powder for roofs harmful to paint.
According to the manufacturers zinc sulfate will not stain roofs or corrode aluminum and galvanized gutters.
Galvanized steel is often used for building siding roofing downspouts or shed construction.
If you are preparing to paint a rusted galvanized metal roof pay special attention to surface preparation or you will have a recurrence of rust and or flaking.
However paint on metal roofs often peels or rusts in which case it is time to repaint it.
How to kill moss with zinc.
The aluminum creates an exterior layer that protects the zinc and steel inner layers from moisture damage.
Many of us have made reference to an old farm house with a tin roof.
Working with moss killers.
Dry powder and liquid.
To use zinc sulfate one can apply powder directly to moss areas.
Back then the paint itself was just an oil based.
Zinc sulfate general information.
It came as a 2 part can one a standard gallon with the paint in it and the other a short can of the same diameter containing the zinc powder.
A current alternative trend in roofs is the use of aluminum.
When it rains the water mixes with the powder and runs down toward the eaves.
One brand name is moss b ware.
Many metal roofs are made out of galvanized metal which is a type of metal that has been covered with hot zinc in order to protect it from the weather.
Galvanized metal roofs are coated with a layer of zinc that inhibits rust.
Today metal roofs often consist of an alloy steel with a zinc coating applied to it for protection known as galvanized metal.
Aluzinc for instance is an aluminum and zinc coating which is commonly used for hot dipped galvanization.
In addition to being unpleasant to look at moss is also hazardous.
Wet roofs may be slick.
What s galvanized steel used for.
Unfortunately over time this coating can fail leading to minor rust outbreaks.
Moss is an unsightly soft plant that quickly grows over hard surfaces in shady locations.
Avoid climbing on the roof if possible.
My dad used to get the same sort of paint back in the 60 s and 70 s to use for painting outdoor framework for cooling towers and other similar stuff.
Zinc sulfate monohydrate powder 35 5 zn 99 9 pure.
Follow the first aid procedures listed on the package directions.
The active ingredient for some moss killers is zinc sulfate monohydrate usually at concentrations of 99.
From steel slitting to tube manufacture to fabrication powder coating and even zinc according to the manufacturers zinc sulfate will not stain roofs or to use zinc sulfate one can apply powder directly to moss areas.
Dry powder moss killers are applied by sprinkling the powder in multiple lines parallel to the ridge of the house spacing the lines about 2 to 4 feet apart.
