How do I get rid of moss on my ashphalt shingles?
First, trimming overgrown tree branches is a good idea. Your shingles need sunlight to help the roofing system (shingles, sheathing and framing) dry properly. You don’t have to chop down the tree, but you can provide more sunshine by having it trimmed. Once you’ve eliminated the overgrowth, you should clean your roofs. There are several commercial roof cleaning products on the market, many of which contain zinc sulfate. Follow the manufacturers’ directions for these cleaners. Some cleaners can be sprayed on the roof from the ground, but in cases of extreme buildup, you’ll likely have to climb the roof to apply the cleaner. If you do work on the roof, wear shoes with soles that will grip the shingles, and be careful. Before using a cleaner, carefully scrape away moss, lichen and algae. Use scrapers and flat-edged shovels, but work slowly so as not to damage your shingles. House Doctor House Doctor Recent columns After cleaning the shingles, install metal flashing made of zinc or copper
