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I'm installing Tuff-Rib 26ga 3ft panels over one layer of shingles of my house.
What is the spacing of the screws vertal, i know they go by ea rib mid panel and both sides at edge and peak, but how far apart?
All i have found on this is when using furring strips.
Thanks
4/27/2009
Isaiah Industries, Inc.
4/29/2009