I went to our Cape Cod based Home Depot today to purchase "Restora". It is not available here because it contains chemicals that are prohibited for this area. No stores are allowed to carry a wide variety of products that might endanger the ground water supply so I'll need to make a trip somewhere to pick it up at some point. The guy behind the desk at Home Depot said that he gets a dozen or more requests for the product daily so there is some demand for it. I suspect that it might work pretty well for our cladding and may not require the frequent applications that most products require. In fact, three years per application is the advertisement. Would have jumped at the opportunity to try it. I'll post results if I ever get my hands on some of it.

Scott