"Rob Reali" wrote in message
news:Pjy4f.1132$mV4.485@dukeread02...
Anyone ever heard of tacking a piece of bare copper wire on the ridge line
of a house to prevent asphalt shingle mold?

The theory sounds solid, since most of the mold inhibitors contain copper.


I've used this stuff on two different homes here in Central Florida with
perfect results, no mildew/fungus build-up. One home has had it in place
for 10+ years and no signs of a problem.

http://www.shingleshield.com/product.html