A door that drags across the floor. One that swings open on its own. A gap that's wider on one side than the other. These are classic signs that a door hinge needs adjustment—and if your door uses concealed hinges, you might be wondering whether that's even possible.

IntroductionHidden door hinges, also referred to as concealed hinges, have emerged as a top choice in contemporary architecture and interior design. Unlike traditional exposed hinges, hidden hinges are installed within the door and its frame, remaining out of sight when the door is closed. This des