Algae On Roof Tiles

Can have moss and algae accumulate on their roofs.

Algae on roof tiles.

We provide a list of type of stains and colors that appear on roof shingles and on other. Algae growth on your roof looks bad. 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. It s actually just a blue green algae spread by airborne spores.

Roof or wall tiles are often covered with moss or algae if not clean for more than 3 months. Those places that receive more rainfall and have sustained high levels of humidity have more moss and algae growth as the moss and algae need water to grow and multiply. One alga plant is unlikely to cause a fuss on your tile roof. Algae growth is common on roof surfaces of several materials including asphalt shingles concrete and clay roof tiles and even slate.

The black streaks on your roof don t appear for everyone they usually only appear on roofs in humid parts of the country. Roof algae generally have a black green hue. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. Stop roof algae from coming back.

Algae stains don t show up below the metal flashing around chimneys or roof vents because the copper and the zinc coating on galvanized sheet metal are toxic to algae. You may think you have roof algae when really you have moss mildew or mold. Algae provide a foothold for other organisms. Whenever it rains trace amounts of metals are washed down the roof inhibiting algae growth.

If your household water pressure isn t enough to generate the proper nozzle pressure at the jets the manufacturer recommends boosting it. Often algae that is identified as green when studied microscopically also looks black or quite dark on a roof surface. It discolors your tile roof absorbs heat unevenly and absorbs moisture. Use a roof scraper to scrape the extra debris from the tiles.

In the hundreds of thousands though algae such as pond scum seaweed and the algae blighting your roof can cause real damage. Just be careful to not damaging the tile. Remove moss and algae. Random moss spots here and there are easy to clear but the excessive build up of algae and moss is pretty hard to remove.

Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.