You scrub that dark streak off your roof, feel pretty good about it, and then six months later it's back again like it never left. Here's the thing most homeowners don't realize, those stains aren't just dirt you can wash away. They're algae that's actually feeding on your shingles, and if you just clean the surface without killing the root system, it grows right back. A Roofing Contractor Wimberley, TX will tell you the spores are probably still living in your shingles even after a good pressure wash. Without proper treatment and prevention, you're fighting a losing battle. Sometimes the damage goes deeper than cosmetic, which is when you need a Siding Contractor Wimberley, TX or even full Roof Replacement Services near me to fix what the algae destroyed underneath. Western Skies Roofing & Construction : https://www.google.com/maps?cid=9229191897320819968 Find out more : https://socialytime.com/blogs/118476/Why-That-Roof-Stain-Keeps-Coming-Back-Even-After-You