Abstract: An apparatus that supports and positions multiple build up ceiling and crown moldings during installation. The base of the apparatus is temporarily retained on the wall surface at its top through a centered 45 degree slot and a partially driven nail located approximately ? inch down the wall surface vertically from the ceiling. The base has a centered dovetail track to accommodate a vertically moving member that slides up and down and can be locked at a desired position with a thumb screw that engages the dovetail track. The top of this vertically moving member has a flat pivoting support that adjusts to any angled crown mold profile and locked into position with tightening round knobs until molding is secured to ceiling and wall. The base's bottom has a sliding adjustment rod with boot to adjust parallel from the wall surface to accommodate multiple buildups of ceiling and wall crown moldings and a thumb screw to lock adjustment rod and boot in the proper position from the wall.