Elastomeric roof coatings are applied thicker than paint. These elastomeric roof coatings are used for roof leaks repair. An elastomeric roof coating seal roof leaks, saves and extends the life of old roofs. Elastomeric roof coatings are an excellent choice for roof leaks repair.
How to Clean Algae and Moss from a Roof. Apply the bleach solution with a garden sprayer. Let it stand on the surface for about 20 minutes, then rinse it off with spray from a garden hose. Don't let the bleach solution stand on the roof for more than 30 minutes or so without rinsing.
Algae: They like dampness and shade, so algae spores can grow on wood shingles or shakes and asphalt shingles that donât get much sunlight. Because roof algae retain moisture, they can cause shingles to deteriorate and eventually rot completely. Algae also like the humid conditions in gutters and downspouts and can grow there as well. Algae are recognizable by their black-green coloring. Moss: It likes moisture, so it typically grows on moist wood shingles or shakes. As the moss grows, it contains even more moisture, all resting on the surface of your roof.