To Install Metal Doors in Concrete Walls, you have to Position the metal door in place within the concrete door frame. You need to determine which direction you want the door to open and set the door with the hinges facing the proper direction to open on that side. You must Mark the location of each hinge screw attachment hole on the concrete door frame. You should Remove the door and set it aside. After that, Drill into each marked hinge screw position with a masonry bit and a hammer drill.
You have to ensure that the drill is set to the hammer position and on the highest power level. You can back the drill bit out every so often to dump out the concrete dust that accumulates in the screw hole. You need to Replace the masonry bit as necessary if the drill stops making forward progress into the concrete wall. Then, Reposition the door in the frame and line the hinges up with the drilled holes. You must set 3-inch masonry screws into each hole partway and screw them in halfway until all the screws are in place.
You should tighten down the screws completely at this point to complete the door installation. You can Test the opening of the door and make any adjustments you need to allow for a perfect fit of the metal door within the doorway. Next, hold the latch faceplate up to the concrete frame where the latch of the metal door lines up with it. You have to Mark the location of the faceplate screw holes and the larger opening where the latch will click into place. You need to Remove the faceplate and drill out each hole with the masonry bit.
You must Drill out the larger opening with a larger masonry bit if necessary or simply drill it out bit by bit with the small masonry drill bit. Forth, Set the faceplate into position on the concrete door frame and attach the faceplate to the frame with 1-inch masonry screws.