Algae Growth On Roof Shingles

Algae and moss growth on roofs at a minimum is an unsightly nuisance.

Algae growth on roof shingles.

Simple cover your plants just as painters do. 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. Gaf royal sovereign golden cedar algae resistant 3 tab roofing shingles 33 33 sq. Moss build up can lead to roof damage or shingle blow off if left unchecked.

The most effective method of cleaning algae and moss from a roof is w ith a 50 50 mix of laundry strength liquid chlorine bleach and w ater. Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. Method of inhibiting algae growth on asphalt shingles u s. Contact a roofing professional the day you notice signs of potential algae growth on your 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. A contractor can then recommend ways to prevent future algae growth such as special roof coatings or gutter replacement. The longer you wait the harder it will be to. That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.