You can find more information on these special roofing shingles here.
Moss or algae on roof terra cotta shingles.
Moss doesn t tend to leave residual stains after removal but if your roof is prone to moss it is likely prone to algae too which does leave a stain.
Discuss this option with your roofer when it s time to replace the roof.
Exterior house cleaning the project s estimated cost is 275 000 and would include cleaning and repointing the brick stone and terra cotta facade house roof cleaning remove algae from roof shingles mildew and algae can be removed with an asphalt wash available at home improvement stores or with simple household bleach and water.
Moss commonly thrives in moss and algae growing on roof shingles and tiles can be unsightly not to mention damaging.
It can be brown gray blue or green.
Left to grow and embed themselves these types of organisms can cause thousands of pounds of damage.
Algae is not a plant but an organism spread by spores.
3m is not a manufacturer of asphalt shingles just the granules.
Left untreated moss will shorten the lifespan of wooden shingles and even asphalt shingles.
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.
Chemically treated roof shingles are available from several asphalt roofing manufacturers who offer these products which are resistant to moss lichens or algae growth on roofs.
Moss is like a sponge that holds in dampness rotting wood and corroding asphalt.
Moss on your roof is typically green throughout the wet times of the year but can turn greenish brown during the drier seasons.
After the algae is removed it may affect the overall aesthetics of your roof and home.
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.
Moss lichens algae resistant roof shingles use algae resistant shingles when re roofing.
They call it the algaeblock system.
In extreme cases the moisture may seep beneath the shingles or tiles rotting the wooden structure beneath the roofing.
Jun 9 2014 however moss growing on your roof top is not considered lovely and should be deemed as a nemesis to your roof.