Install a metal strip.
Moss on north side of roof.
The company recommends that the powder should be applied only when the wind speed is less than 10 mph to avoid spreading corrosive dust.
Moss develops in perennially shady areas and in places that tend to be cool and damp.
Moss grows in dark or shady moist areas.
On the other side of the equator the sun is mostly to the north which means that the north side of trees is hot and dry.
Moss thrives in damp moist areas including roofs that are north facing or shaded by trees.
However on the north side of that same tree its darker cooler and moist the perfect conditions for moss.
A copper zinc or a galvanized metal strip installed on the ridge of the roof can prevent the growth of moss algae and lichen.
Preventing moss from growing on your house siding can keep your home looking beautiful and protect your family from potential health hazards that moss can cause.
If you ignore it overtime moss will grow beneath your shingles and lead to more severe damage.
Moss which tends to appear on areas of roofs that are shaded by trees and on north facing slopes is sometimes killed and re invasions prevented by simply correcting the shady humid conditions.
The sun dries out that side of the tree and doesn t give moss the environment it needs to grow.
Moss growth is especially common on the north side of homes as this surface receives the smallest amount of sunlight during the day.
Over time it can cause roofing to degrade.
This is why you will typically see moss growing on the north side of trees fence posts and yes roofs.
The dangers of moss growth.
North facing roof areas that receive little sunlight are prone to moss.
The strip will oxidize over time and wash down the roof plane when it rains making the roof plane much less habitable for moss algae and lichen.
Moss grows in areas that get little to no sunlight but a decent amount of moisture buildup.
Within these areas though moss does not grow in equal quantities everywhere.
Moss b ware is sprinkled along the roof ridge where subsequent rainfall distributes the chemical zinc sulfate monohydrate over the roof surface.
A simple mixture of bleach and water will kill the moss causing it to dry up release from your roof and blow off in the wind.