Port Charlotte took a heavy hit from Hurricane Charlie when it slammed through our area in 2004.
many of the roofs in Port Charlotte and Punta Gorda Florida were replaced back then.
It's been 9 years now and most of those new roofs are now covered in black algae. New shingled roofs come with a zinc or copper particle [powder] on them, that slowly leaches itself out and stops algae from infesting the roofing. That usually lasts about 7 years and then you will see the black algae [gray at firs