How To Remove Algae Stains From Roof Shingles

The ugly black red green or brown stains on your roof are likely algae or moss.

How to remove algae stains from roof shingles.

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. Here are some major roofing manufacturer s warranty statements. Getting rid of the problem is important but how do you safely remove algae and moss from roof shingles. Mix up oxygen based cleaner with water in a five gallon bucket following the instructions.

Whenever it rains trace amounts of metals are washed down the roof inhibiting algae growth. Roof shingle algae stains and roof warranties. It takes special care to clean algae roof stains and moss off the roof. It is not uncommon for roof shingles to turn black over time.

Black stains on asphalt shingle roof caused by algae growth. Whether you install the metallic strips or apply the stain blocking solutions you re still going to experience algae regrowth sometime down the road. If you decide to try it apply it shortly after you ve cleaned the roof. While an occasional cleaning might not harm your roof repeated use of harsh chemicals or the erosive effects of pressure washing can damage or shorten the life of asphalt shingles.

Remove black stains from roof shingles to preserve the appearance of your home s roof. Algae stains can be removed by cleaning though they usually return. To clean an asphalt shingle roof to remove black algae stains. Removing algae stains from roof shingles is easy with the right technique.

When that happens it is generally caused by mildew algae mold or dirt stains. Also see warranties for roof shingles. The only way to take care of it is to use a high base chemical solution like zinc sulfate. These black streaks are unsightly and can diminish the appearance of the entire exterior of the home.

How to remove algae from roof shingles here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles. A stain blocking product can buy you up to three years of protection from algae.