How to Remove a Wall Plate from a Concrete Floor

Examine the wall plate to see how it is attached to the floor. If the installer used concrete screws or bolts, they may be able to be backed out with enough force. Place the correct sized bit into the screwdriver or the socket on the wrench. Carefully and slowly attempt to back the connector out of the concrete. With a little luck they will easily slide out and you can lift the plate up.

If the installer used a pin and sleeve, or if the screw or bolt do not back out, then you will have to grind the heads off flush with the plate. Put on the safety equipment for protection. Place the grinder wheel into the grinder and turn it on full speed. A pin or screw head is normally quick to come off when touched with the grinder but a bolt may need a minute or two of grinding down depending upon the size and hardness.

Wait a minute or two after grinding the connectors to allow the plate to cool down. Inspect the area to ensure that the complete head is removed from the connector.

Slide the pry bar under the middle of the plate. If necessary hit the end with the maul to force it under the plate. Lift up and force the plate up and over the remaining portion of the connectors. If the plate was also glued down, you may have to chip away at the concrete along the side of the plate to have enough room to get at least some portion of the pry bar under the plate. You may wind up with a chipped and gouged floor as you work the plate up.

Remove the plate and grind the connectors down to just below the surface of the floor. Use the concrete repair kit as per its instructions to fix any gouges and nicks, and level the floor off.