this is quite common and is a simple cure. run a continuous bead of caulk along the plate, make sure the floor is clean. try an acrylic type caulk, acrylic will bond well to both wood and concrete and should be compatible with most carpets, underlays and tile.
_________________________
Bart Blainey, B.E.R.
Consultant/Journeyman Carpenter
Building Envelope Specialist
Master Renovator
provip@prodeck.org
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