Paul CumminsApr 8, 20171 min readCopper kills algae/cyanobacteria on roofs!Updated: Sep 21, 2019Drove by a whole row of houses with copper surrounding their chimneys. Copper is a main ingredient in Wet and Forget. I wonder if the creators saw something like this. #roofRoof9 views
Drove by a whole row of houses with copper surrounding their chimneys. Copper is a main ingredient in Wet and Forget. I wonder if the creators saw something like this. #roof
