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Jun 7, 2014
What size nails are required for Structural insulated sheeting .5 inch foam board.
Aug 15, 2014

+1 to the previous comments. Depends on what the foam manufacturer specifies as well as what the exterior sheathing is going to be. I would also recommend a thicker foam for additional insulation and thermal break if possible. Depends on what climate you are in and what the wall construction is when it comes to optimal foam depth.

Eric Consuegra answered:

Jul 9, 2014

Hey C.J.,

The manufacturer's installation specifications should specify the type and length of fasteners that should be used with installing the 5 inch foam board.  You may want to contact the local store where you purchased the material for the manufacturer representative in your area. Hope this advice helps!

Eric Consuegra, 

AROCON Roofing and Construction, LLC 

Aug 13, 2014

This is based entirely on the Manufactueres recommended installation techniques per the scope of work to be performed.  Such as location, what your fastening to etc.

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