Moss Algae On Roof

Moss on a roof begins with a thin dusting of green that you may notice only from low angles.

Moss algae on roof.

Moss is a thick organic growth. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach. Moss develops in perennially shady areas and in places that tend to be cool and damp. So even if you do live in a cool damp climate sections of the roof that get strong sunlight every day may not develop moss.

Roof moss removal usually requires a broom or heavy stream of water. It can be brown gray blue or green. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Moss on your roof is typically green throughout the wet times of the year but can turn greenish brown during the drier seasons.

Copper strips prevent the growth of moss and algae. Keeping branches trimmed back from the roof and removing any debris that begins to accumulate should be part of a regular roof maintenance program. 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. 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.

Algae will grow flush against the shingles and fixtures on your roof. How to get rid of algae on the roof. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. You can avoid an algae infestation by installing algae resistant shingles such as iko s nordic shingles.

What is roof algae. Algae and moss growth on roofs at a minimum is an unsightly nuisance. Where there s moss there is also algae as they thrive on the same wet and shady conditions. Moss build up can lead to roof damage or shingle blow off if left unchecked.