Moss Algae On Roof

Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.

Moss algae on roof.

It can be brown gray blue or green. Copper strips prevent the growth of moss and algae. Moss is a thick organic growth. Because moss or lichens growing on a roof surface will hold moisture on the roof longer than other areas these growths can reduce the life of the roof covering.

Moss develops in perennially shady areas and in places that tend to be cool and damp. Roof moss removal usually requires a broom or heavy stream of water. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach. Moss on your roof is typically green throughout the wet times of the year but can turn greenish brown during the drier seasons.

Algae will grow flush against the shingles and fixtures on your roof. Moss build up can lead to roof damage or shingle blow off if left unchecked. Stop a moss problem from returning by installing strips of zinc or copper coated sheet metal just below the top ridge on both sides of the roof. Keeping branches trimmed back from the roof and removing any debris that begins to accumulate should be part of a regular roof maintenance program.

What is roof algae. Algae is not a plant but an organism spread by spores. Though algae resistant shingles will not prevent moss they will help you avoid pesky algae. Algae and moss growth on roofs at a minimum is an unsightly nuisance.

The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Copper is more toxic to moss and algae but zinc is. You can avoid an algae infestation by installing algae resistant shingles such as iko s nordic shingles. How to get rid of algae on the roof.