Green Algae On Roof Tiles

The algae can cause black or gray streaks that seem to run down your roof.

Green algae on roof tiles.

Algae on a roof surface appears as a thin green coating which is mostly a cosmetic concern. It causes the black stains you may see on your roof. It s actually just a blue green algae spread by airborne spores. 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 strips prevent the growth of moss and algae. Step 3 check for cleanliness and rinse. Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight. Allow the solution to soak into the shingles for at least 15 minutes.

Moss is thick algae is paper thin. It is easily spread and causes those colorful stains on so many roofs. Algae growth is common on roof surfaces of several materials including asphalt shingles concrete and clay roof tiles and even slate. Put on rubber gloves and a breathing mask before proceeding you so you can.

Often algae that is identified as green when studied microscopically also looks black or quite dark on a roof surface. Never use a. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach. Take a scrub brush lightly scrub the shingles.

Moss is a thick organic growth. Step 4 take precautions. The green color comes from chlorophyll which is the same substance that makes plants green. If you have green stains on your deck or siding it s probably due to either cholophyta algae green algae or a cyanobacterium related to gloeocapsa magma.

Spray it on the roof and you need to keep the roof wet with the solution for about ten or fifteen minutes. Cleaning step 2 make and apply the bleach solution. Roof algae generally have a black green hue. Here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles.

It needs heat moisture and nutrients to grow. We ll explain more of that in a bit. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. The only way to take care of it is to use a high base chemical solution like zinc sulfate.

The oxygen bleach starts to go ahead and attack the roof algae. It does its best to kill it and take away the stains. Known as black algae or roof mold gloeocapsa magma is usually blamed on dirt accumulation mold and mildew or defective shingles.