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.
A solution of 10-20% bleach to water usually knocks down the moss spores-DO BE SURE TO TEST A SMALL AREA FIRST IN CASE THE BLEACH DISCOLORS YOUR PAVERS! If you have a small area you can use a stiff brush to remove the moss.