"Fred" wrote in message
...
Pound on the concrete nail on the strip but it only break the concrete or
the nail bend itself. My concrete carbide drill diameter is larger than
the nails. Concrete is old and hard, any suggestions? Time to get some
Loctite Power Grab?

Liquid nails will help as a glue. As far as nailing the tack strip, you
only get two blows per nail with the hammer. If you are meekly tapping at
them the only thing you will do is bend the masonry nails or chip holes in
the concrete.

Bill