You can determine this by checking the outer top corners of the doors where they meet.
How to get french doors to line up.
Tighten the screws in the hinges at the edges of the doors and at the faces.
Test the door by placing it in the door jamb to make sure it fits.
Line up the two hinge plates so that the ones on the door match the ones in the jamb.
Before doing so mark the spot with a pencil on either end where the door needs to be sanded.
5 reinstall the door by first inserting the top pivot into.
If this does not work you can insert a wood shim on the jamb that needs it.
These include tightening or replacing the screws of your door s hinges.
Slide the hinge pins into place and remove the blocks from the door.
Connect the door to the jamb.
There are two techniques that you can try to fix misaligned doors.
If not remove the door from its hinges and lay it flat on the floor to sand.
This can be done while the door is in place if you have access to the necessary spots.
Set up a power or cordless drill with a screw tip attachment.
Install square head 4 inch long deck screws with the cordless drill.
Square head screws don t strip out as easily as phillips head screws do.
Smooth away any spots that stick with a sanding block.
Open both doors fully and stabilize each with a doorstop.
Get a helper to hold the door in place while you do this.
Now that the doors are the same size you need to notch out the the hinges for the new door.
How to find the adjustment screws to level up double glazed french doors if your set of doors are out of line or scraping the ground sill then this video w.
Turn the bottom pivot in or out to change the height of the door.
Screw the pivot in to lower the door or screw it out to raise the door.