Three point locking mechanisms are best for french doors.
Securing wooden french doors.
French doors are difficult to secure for several reasons involving the following weak spots.
The fixed door on many french doors is held closed by a pair of barrel bolts that sink into the top jamb and threshold of the doorway.
However a deadbolt that locks both doors together and single sided deadbolts in the top and bottom of both doors are a good combination for securing both doors.
The best french door security will have a 3 point locking system.
To do this we.
Because french doors have no center frame or support they are very weak in the center.
Even if these are tight enough to prevent the fixed door from.
This means anyone can remove the pins and take the doors off the hinges.
For doors that come as a pair consider locking securing one of them permanently.
When french doors open outward the hinges are exposed on the outside.
Out of all the locking options to secure a french door a single sided deadbolt is the best option.
This alone will make it a lot more difficult for a burglar to force the doors open.
Add one side half deadbolts to the top and bottom of each door.