View Single Post
  #22354  
Old Posted Apr 15, 2012, 5:29 PM
rjb001's Avatar
rjb001 rjb001 is offline
Eagle Scout since 9/28/09
 
Join Date: Jul 2010
Location: Chicago
Posts: 355
Quote:
Originally Posted by WTCman7301 View Post
This is a bit off topic. I've been noticing the roof of 4 World Financial is getting greener
Yeah, it's been oxidizing a lot lately. The only reason it's taken longer than the roofs of 1, 2, & 3 WFC is because the copper is vertical on the roof, making it harder for water to stay on and oxidize it.
__________________
Pshh... What dark ages?!