Slide wedges or shims underneath the door so the hinges line up with the mortises on the frame.
How to hang interior door hinges.
Repeat on the other two hinges.
Mount the hinges on the new door and hang the door.
While replacing an interior door in an existing opening doesn t require many tools it does require patience and care.
Use a centering punch to make starting divots for the screws.
Screw the hinge leaf to the door.
If the door is heavy have a partner help you hold it in place.
Position one half of a hinge with the inner knuckles in its mortise on the door.
Lift the internal door out of the clamp offer it up to the frame at a slight angle and screw the top hinge to the lining first.
Don t fill the hinge up with all the screws yet in case it needs adjusting unless you are hanging a heavy fire check door.
If the old door was trimmed at the bottom and you were happy with the gap at the floor cut the new door to match.
You can use a board door lifter to make this easier.
Keep the door in an open position so you can attach the hinges to the door frame.
Use wedges or shims to hold the door in the frame at a 90 degree angle.
Slide the hinge pins into place and remove the blocks from the door.
Once you ve finished mortising the hinges set the door upright and bore the lockset holes.
Mortise the hinge openings using a chisel and utility knife photo 4.
Line up the two hinge plates so that the ones on the door match the ones in the jamb.