After years of use bifold doors will move out of alignment and begin to sag.
Bi fold doors won t close flat.
Bifold doors contain two separate door panels that are connected with hinges forming one bifold door.
At the lower part of a bifold door is the anchor consisting of a metal peg which fits right into a track.
A half inch of clearance is adequate photo 1.
On top of the bifold door is a pivot loaded with spring and a wheel which slides in.
The peg adjusts by being screwed up and down.
The easiest way to measure a bifold door for cutting is with the door slightly opened.
The sagging doors will not close correctly and sit loose in the door opening.
Depending on the size of the door opening it holds either one or two sets of bifold doors.
Turn the bottom pivot height adjustment to lower it if possible.
Or make them into french doors use straps to make each bifold into 1 door take out track in the middle so doors will open up like french doors you can use a magnent at top middle to make them close in the middle.
The doors are similar to closet bifold doors but without the spring track at the head and thus the doors will swing away into the room or fold against each other leaving the opening completely.
Throw them in the trash.
Sometimes the top pivot doesn t compress enough to free the bottom pivot.
Whether your bifold doors contain two panels or four panels adjust the doors similarly if they continually pop back open after you close them.