Abstract: A retainer apparatus and method is disclosed for retaining a form mold in a selected position that includes a beam having a longitudinal axis and a retaining member slidably engaged to the beam allowing for free movement along the longitudinal axis when said retaining member is in a free state. The retaining member has a lengthwise axis substantially perpendicular to the longitudinal axis in the free state, with the retaining member also including a leg substantially parallel to the lengthwise axis, the leg extending from the slidable engagement and terminating in a form mold interface portion. The retaining member also including a head portion extending from the slidable engagement being substantially oppositely disposed from the leg. The retainer apparatus is place into the locked state by applying a force to the leg to substantially lock the slidable engagement and retaining the form mold.