September 2008 Archives

The HOA recently sent notices to several homeowners stating black algae stains are a maintenance violation that requires mitigation (cleaning). These black stains typically occur on north facing roofs (receives little sunshine and can remain damp for long periods) and are caused by an airborne algae (type of mold) that is endemic to the east coast from Florida to New England. Once a roof is affected, the spores can literally spread from home to home. There are several remedies not the least of which is roof replacement (ouch). There are also several products and countless businesses that claim the offending spores and resulting stains can be removed. Here are the remedies: