When the hinges are plumb the door should remain in whatever position it is placed.
Fix door that won t stay open.
Cut a piece of thin cardboard to the size and shape of the hinge side piece.
Open the door step in to the opening and turn to face the hinges.
If your door wont stay open then it is out of plumb ie.
If the top hinge is to the left or right of the bottom hinge the door is going to swing in the direction of the top hinge.
If not then you may have to loosen either the top or bottom hinge and shim it.
If the door tends to swing slowly closed when left open you can correct the problem by either moving the top hinge leaf on the door jamb slightly closer to the door stop molding or by moving the.
When a door won t stay open the casing is probably leaning slightly in the wall frame.
In fact this solution is more likely to make the problem worse.
Rather than remove and rehang it try removing one of the hinge pins.
Check the screws that mount the hinges perhaps they are just loose.
How to fix a door that won t stay open.
However while this might be a good solution for a squeaky door it won t do much to fix a door that won t stay open.
On jun 21 2020.
If it sags one way or the other then this is usually another clear sign that the door is out of alignment and won t latch correctly.
Hinge pins one of the most commonly recommended solutions is to remove clean and oil the hinge pins.
One quick way to compensate for the misalignment is to get a file and file down the bottom of the strike plate opening where it meets the hole in the door jamb.
Place it on a hard surface and whack it in the middle with a hammer.
This should give it a slight bend which will add tension to the hinge when you re install it.