Prevention is always the best option for dealing with roof algae.
Roof algae control.
Z stop is a zinc roof moss algae and fungus inhibitor that is applied in strips to old or new roofs.
You cannot control whether the wind deposits spores onto your roof but you can prevent the spores from developing into algae.
You must make the roof an unhealthy environment for spores.
Zinc armor 3 inch wide zinc strip 1 roll of 50 feet prevent algae moss for roofs fungus mildew made in usa.
4 7 out of 5 stars 142.
Common algae that form on roof surfaces including asphalt shingles and roll roofing include the algae shown above and gleocapsa magma a species that generally appears black on the roof surface but under some lighting conditions even on the roof gleocapsa magma can appear as a blue green color as might other algae genera species.
That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.
Zincshield pure zinc strip to avoid ugly roof stains from moss algae fungus and mildew 50 foot roll 2 5 includes bag of zincshield nails made in the usa.
To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.
It works with any wood or composition roof.