Abstract: The invention is a method and apparatus for repairing a portion of a floor where a flooring material has become separated from a subfloor, the method includes the steps of: determining a separated area of the flooring material; drilling a first injector hole at the separated area to a void between the flooring material and the subfloor; injecting a liquid adhesive into the first injector hole via an injection nozzle to deliver the liquid adhesive into the void of the separated area; and allowing the liquid adhesive to set. The apparatus is the injection nozzle including a body having a first end, a second end and a passageway extending between the first end and the second end, the first end being configured to receive the liquid adhesive into the passageway, and the second end comprises a pre-formed hole configured to deliver the liquid adhesive from the passageway to the void.