Algae Growth On Roof Shingles

Identifying removing preventing algae fungus lichens moss on roof shingles.

Algae growth on roof shingles. Dark streaks or roof discoloration caused by algae happens in varying degrees across the u s especially in areas exposed to. 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. Asphalt roof shingle defects. Simple cover your plants just as painters do.

While studies show that algae growth is not harmful to the building envelope the growth of algae on cool roof specialty shingles can reduce the performance of solar reflectance because the algae spreads across the face of the shingle and covers the reflecting granules that reflect thermal energy from the sun. Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. Algae may be mistaken for soot dirt or tree droppings most of which typically produce only localized discoloration. 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.

Patent 5 356 664 issued october 18 1994. Gaf timberline hdz charcoal algae resistant laminated high definition shingles 33 33 sq. Per bundle 21 pieces model 0489180 view the timberline hdz shingle collection. The longer you wait the harder it will be to.

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. Homeowners who take steps to prevent moss and algae growth can protect their home s structure for years to come. How to prevent algae and moss on roof shingles. 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.

The best way to get rid of algae once it s taken hold on your roof is to have a professional roof cleaning team come with a low pressure washer and cleaner that will kill the algae and mold but not hurt the plants and. Method of inhibiting algae growth on asphalt shingles u s. Algae growth may cause discoloration on roofs resulting in brown or black streaks on a rooftop. Here we discuss the causes of algae moss lichens or fungal growth on roof shingles the effects of these conditions and how to cure or prevent them.

A contractor can then recommend ways to prevent future algae growth such as special roof coatings or gutter replacement. Moss and algae growth can be prevented regardless of your roofing system or climate. If the algae have damaged your roofing system a contractor can schedule repairs.