This microscopic bits of metal poisoned the algae and it simply would not grow.
Roofing materials that will not grow moss.
How long does it take.
This creates the perfect environment for moss to grow.
A moss s roots are rhizoids and can anchor the moss to your roof.
Unlike algae and moss mold is not a healthy plant.
It can take a good deal of time for the moss to grow around your roof.
Cut the limbs that hang from the roof or install stripe copper or zinc sling this ridge.
If you want to prevent moss as best possible consider at least taking down branches over your roof if not cutting down the trees that are very close to your house.
Each time it rained some of the copper or zinc washed down on to the roofs.
This not only prevents the growth of moss on the roof but also algae.
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.
As wind leads particles to your roof and leaves or twigs fall onto its structure the debris and other organic materials on your roof give moss the sugar and nutrients it needs to survive and grow.
Algae algae is trickier than moss to prevent but some shingle manufacturers are making strides with copper composite.
New asphalt roof shingles are available with an inclusion of chemicals that resist moss lichens algae and even fungal growth.
Resist does not mean moss proof or lichens proof however for shingles subject to difficult conditions such as extensive shade under trees and lots of organic debris left on the roof surface.
They are zinc and copper.
Install a metal strip.
The moss treatment is similar to the algae stain s treatment.
Two elements disrupt the ideal moss s environment.
Roof mold can appear as black or brown blotches or slimy foul smelling accumulations.
The materials can provide your roof with the materials necessary to help moss grow all around.
The moss can then create a layer of algae lichen growth on your roof by collecting windblown soil and spores.
Shaded areas where the sun cannot evaporate all of the moisture on your roof provides the perfect region for moss to flourish.
Copper wire can also be used here.
The moss is not going to develop right away but it can become a burden if you do not keep it under control.
You can also prevent growing moss from your roof.