This is also done on single doors so you can get the 1 8 gap at closing between the door and frame.
Interior french door gap.
Do this on both doors.
The interior french door jambs need to be parallel.
A 1 2 gap is much too large.
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This adjustment works well if you have a gap between the french doors or the latch mechanism doesn t connect.
Because one or both of the french doors are moving many traditional weatherstripping solutions just don t apply.
Remove hinge from jamb one at a time top to bottom 2.
With two doors in an opening you need to back bevel each door about 5 degrees.
Turn the upper hinge adjustment screw to even out the gap.
The two door jambs must be installed plumb parallel and in the same plane.
Since the actual doors in your new french doors are undoubtedly perfectly square this means that if the reveal or spacing in between the doors and the frame are equal then the overall door frame is square.
The cardboard behind the hinges pushes the door out further as a result minimizing the reveal in between the 2 doors.
Re attatch the hinge with the cardboard trace to the jamb.
It s not uncommon for a gap or crack to exist where the two doors come together.
French doors can be a weak point for letting moisture light sounds bugs cold air and dirt into your home.