Homeowner Forum / Construction / September 2006

Hi,
A friend of mine has an existing home with an insulating concrete form
foundation.  On one side there is a walkway outside this foundation
(sidewalk slab at approximate basement slab level).  So he stripped off
the stucco and got down to the plywood and some of the ply is not
attached well so he is trying to attach it.  The original contractor
shot nails thru the plywood and some of them hit the concrete in the
ICF and embedded ok.  He wanted to attach the ply better but most nails
don't embed well enough into the concrete because of the thickness of
the syrophoam.  What would be a good way to attach the plywood before
he puts the stucco on it?
Thanks