You've probably noticed those dark streaks creeping down your vinyl siding and assumed a quick scrub would fix it. Wrong. That's not dirt, it's algae. Specifically, gloeocapsa magma, which feeds on the limestone filler in vinyl. Regular soap won't touch it, and aggressive scrubbing can damage your siding's finish. What you need is a professional Pressure Washing Service Port Chester NY that understands the difference between blasting away grime and actually treating organic growth. Most homeowners waste weekends trying DIY methods that don't work. The same issue affects pavers and concrete too, which is why finding a reliable Paver Sealing Company near me makes sense for complete exterior maintenance. Sealcoating By Sam's Landscaping : https://www.google.com/maps?cid=6455514313917383434 Read more : https://gulfsena.com/blogs/59219/Why-Those-Black-Streaks-on-Your-Siding-Won-t-Scrub