Step 2 spray the inside mechanics of the french door knob thoroughly using canned air duster to dislodge any dust or other large buildup.
Repair superior french door lock.
If this is the case you may need to remove the entire doors so you can renew the holes.
Disassemble the door knob that contains the lock on the french doors using a screwdriver to loosen and remove the bolts so that each half falls away from each other.
Loosen and remove the machine bolts that secure the lockset at the inside face of the door using the appropriate screwdriver.
Open the operable door using the knob or lever handle.
Sliding door repair from new sliding door rollers weather stripping or the new multipoint locks now being seen on many of the national brands doors.
If the french doors have dropped due to loose screws in the hinges attempt to tighten them before you test the doors again.
French door replacement parts and accessories.
French door repair including the multi point lock mechanisms and adjustments.