December 28, 2011 at 5:54 pm
#694247
kootchman
Member
they would work. everything gets green a slimy in the NW… concrete, roofs, brick, wood.. clay fired bricks are chem resistant… hence their use in old industrial smokestacks… nitrous oxides, sulphur dioxide, etc… clay and time in the kiln make em durable… or not for foot traffic… but ya can still see lots or clay brick roads…