Panel Fastners on Standing Seam Install

Guest User
5/5/2008
I am laying a panel fastened standing seam roof over 5/8 plywood decking on a house. The pancake head screws are an inch long, so they protude through the roof deck by about 1/8". The roof is vented from soffit to ridge through out the house. Is it Ok for the roof screws to go through the roof decking and be exposed to the attic?
Nate Libbey
5/6/2008
Brian, That should be fine. Most pancake head screws are zinc coated, so that will protect them. This is a common occurance. It is far better for them to stick out a little than not to have enough penetration into the wood.
Todd Miller
Isaiah Industries, Inc.
5/6/2008
Nate hits the nail on the head as always!
Guest User
5/9/2008
I imagine the question about screws penetrating into the attic might concern not so much the effect on the screw but on the metal tip being a cold point for moisture condensation. Is that a problem?
Todd Miller
Isaiah Industries, Inc.
5/10/2008
Not if the attic is properly vented it should not be.
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