Therma-Tru provides a simple tutorial on where to look first for a sagging door issue. The most common sagging issues with a door occur because the wrong screw lengths were used to hold up the hinge. If the door continues to sag after correcting the screw length issue, Therma-Tru recommends contacting a local contractor. Feel free to contact Therma-Tru with questions or concerns about maintaining a door unit.
