N. Jack
5/16/2004
Our architect suggests using a nail-on metal roofing instead of the concealed fastener type. He says we can cut the cost substantially this way. What are the pro's and con's?
Todd Miller
Isaiah Industries, Inc.
5/16/2004
The purpose of concealed fasteners is so that you do not have fasteners and fastening holes exposed to the weather. Furthermore, most concealed fastener systems have clip fastening which allows for expansion and contraction of the long sheets of roofing without fastener fatigue or fastener hole wallowing-out. Most nail-through products also come in standard lengths so you have horizontal laps versus concealed fastener products which usually come in continuous lengths. Also, when investigating metal roofing, take a look at the type of coating or finish on the product and its warranty.
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