How To Install a Metal Door Frame to a Brick Opening

Measure the metal door frame you are installing, and note the measurements. Transfer the measurements to the brick opening to determine whether any cuts are necessary, and mark the outline of the door frame on the brick with chalk if any pieces need to be removed.

Cut out the door frame outline using a saw with a mortar blade, working slowly and carefully without forcing the saw. Remove any rough edges carefully, using a hammer and chisel.

Hold a lintel recommended for your door's size and for your project above the door frame to determine how many bricks must be removed. Mark the outline of the lintel in chalk. Cut out the lintel outline with the saw, being careful to anticipate a few bricks falling from the top of the door frame. Put the lintel in place as soon as possible.

Set the metal door frame into position under the lintel. Set the carpenter's level on the bottom board of the frame and make sure the door is level. Raise either side if necessary by placing shims under the frame on that side and hammering them in. Set the door into the frame and make sure it opens and closes. Mark the door frame screw hole attachments with chalk on the brick surface. Drill into each screw hole using a drill bit with a diameter recommended by the masonry screw manufacturer.

Cover the outside edge of the metal door frame with metal and masonry caulking and slide it back into place. Attach the metal frame to the brick with masonry screws.

Fill the area around the metal frame with mortar or masonry caulking for a tight seal, making sure that all surfaces of the metal frame have been coated with caulking. Add an exterior and interior framework around the door for increased cover of the exposed brick cut line.