sagging doorMost people think that for a sagging door, they are going to spend either a lot of time or money to repair it. There are several things you can do to fix this without having to call somebody. 

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Open the door and lift up on it. You might see and feel a lot of play in the door. This is bad. If you can lift up the door, something is not connected well. Look at the hinges, particularly at the top of the door. It may be that the hinges have worked themselves loose either at the door or the jamb. Try tightening them up to pull the door back into the correct position. You may need to use larger screws for this if the holes have been reamed out. For hinge screws, try a larger diameter screw rather than a longer one. 

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If the hinges look good, you can lift the top of the door with a long deck screw. Remove one of the top screws that hold the top hinge to the jamb (not the door). In place of the short screw you removed, install a long deck screw 3 or 4 inches in length. This screw is going to push through the door jamb and into the rough framing surrounding the door. This will pull the jamb closer to the framing and lift the door bottom up, so that it doesn’t drag on the threshold anymore.

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