John Ransford
3/24/2008
Any thoughts on placement of fasteners on ribbed roofing? Many diagrams show placement on the flat. It seems like the flat area would be a stong connection, but would be the most prone to leaks.
Todd Miller
Classic Products, Inc.
3/26/2008
Always follow manufacturer instructions as they will show you the manner in which their products have been tested. Most companies show fastening through the ribs and sometimes the flats.
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