Algae Growth On Roof Shingles

A contractor can then recommend ways to prevent future algae growth such as special roof coatings or gutter replacement.

Algae growth on roof shingles.

Algae and moss growth on roofs at a minimum is an unsightly nuisance. Patent 5 356 664 issued october 18 1994. A method of inhibiting algae growth on an asphalt shingle surface exposed to varying humidity using a blend of copper containing algae resistant granules and non algae resistant granules. If the algae have damaged your roofing system a contractor can schedule repairs.

Gaf royal sovereign golden cedar algae resistant 3 tab roofing shingles 33 33 sq. 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. Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.

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. 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. Keeping branches trimmed back from the roof and removing any debris that begins to accumulate should be part of a regular roof maintenance program. Moss build up can lead to roof damage or shingle blow off if left unchecked.