possibly...i will read up.. we use metal panels of all types now... corrugated, flat seam, standing seam...you name it. copper panels are great...but zinc panels are my favorite. example of zinc panels at University of Hartford ISET building: <img src=http://www.high-profile.com/2005/nov/images/UHartExterior.JPG> <A HREF="http://www.high-profile.com/2005/nov/wilson.html" target="_blank">http://www.high-profile.com/2005/nov/wilson.html</A>