Are the fasteners for metal roofs allowed tlo be exposed. I've seen some with an exposed fastener with a rubber washer. The potential problem in Arizona would be that our intense heat and sunlighttends to deteriorate rubber products quickly.
Thank You
Guest User
2012-07-24 18:56:49.000000
Some products have exposed fasteners and some do not.
Todd Miller
2012-07-24 20:05:08.000000
+1
There are both.
For the reasons that you mention, I prefer a concealed system but there are plenty of well engineered and proven exposed systems.