You can even see where the door has scraped against the frame.
French door sticking at top.
Whether the french doors are completely unable to open only stick intermittently or simply feel rather stiff you must examine them thoroughly to determine the cause of the problem.
If your door is sagging down and sticking at the top then tighten the top and middle hinges.
Open and close the door while you work to see how your adjustments affect the door.
Check the doors to see whether the catching persists.
How to fix french doors that won t close step 1.
Tighten the existing screws into the hinges.
If the doors cannot open at all use a flashlight to check the gap between the doors and the frame for anything amiss.
Most times you ll find that the door sticks along the top because the door is sagging.
Watch for the areas where the doors sticks particularly around the top.
Step 1 determine the source of the problem.
Open and close the doors individually.
If it s a matter of friction on the strike plate try to tighten both the plate and the lock on your door.
When doors don t close properly it s because they are misaligned with respect to the jamb or in the case of french doors with each other.
If you can open your french doors you can check the hinges as well as the door handle and fastening.