Many homeowners install basic door hardware and assume their double doors are secure. This is a common oversight, as standard locks often leave vulnerable gaps between handles or hinges.
Securing your home effectively requires moving beyond the stock latches included by the builder. These Best French Door Security Locks provide the reinforcement you need to keep intruders out. Read on to find the right hardware for your specific door setup.
Key Takeaways
- Prioritize heavy-duty steel construction to ensure the mechanism resists forced entry attempts.
- Verify the internal handle spacing on your doors to ensure the chosen lock fits snugly.
- Select a model that offers a non-permanent installation if you are renting or want to avoid damaging your door frames.
- Choose keyed locks if you need external access, but opt for barricade bars for superior interior-only protection.
- Check for child-proof features if you need to restrict door operation from younger household members.
| Top Security Standard |  |
Patlock Police Approved Security Lock | Extremely effective deterrent | Fits most standard handles | Highly visible security | View on Amazon | Read Review |
| Heavy Duty Defense |  |
Mosecyou Adjustable Door Barricade | Adjustable length | Robust metal construction | Tight, secure fit | View on Amazon | Read Review |
| Keyed Access Security |  |
AST Adjustable Double Door Lock | Includes three keys | Secure locking mechanism | Adjustable for different doors | View on Amazon | Read Review |
| Versatile Backup Choice |  |
AST Adjustable Double Door Lock | Dependable locking mechanism | Adjustable width | Solid brass construction | View on Amazon | Read Review |
| Child Proofing Essential |  |
White Door Reinforcement Lock | High security rating | Child proof design | Minimalist white finish | View on Amazon | Read Review |
| Flexible Support Solution |  |
FlyingAMZ Security Door Brace | No installation required | Highly portable design | Versatile door compatibility | View on Amazon | Read Review |
More Details on Our Top Picks
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Patlock Police Approved Security Lock
If you want the gold standard for your French doors, this is the one to pick. It acts like a physical barrier across your door handles, which makes it nearly impossible for an intruder to force the door open even if they bypass the actual lock cylinder.
You should use this if your doors have two internal handles that sit side-by-side. It is a visual deterrent as much as a physical one, signaling to anyone outside that breaking in will be an audible and difficult ordeal. Just keep in mind that it takes up space, so you need a spot to store it when the doors are in active use.
- Product Brand:Patlock
- Lock Type:Handle barricade
- Installation Style:Manual placement
- Additional Feature:Police approved design
- Additional Feature:Easy to attach
- Additional Feature:No tools required
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Mosecyou Adjustable Door Barricade
This bar is built for people who prioritize raw strength over convenience. It creates a solid metal bridge between your door handles, preventing them from being pushed down or pulled apart.
It is a great choice if you have doors that see a lot of wear or if you live in an area where you feel you need extra protection. Because it is adjustable, you can get a snug fit regardless of the distance between your specific handles. It can be a bit clunky to handle if you are in a rush.
- Product Brand:Mosecyou
- Lock Type:Adjustable security bar
- Material Composition:Steel
- Installation Style:Manual placement
- Additional Feature:Resists prying attempts
- Additional Feature:Quick to lock
- Additional Feature:Fits various handle spans
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AST Adjustable Double Door Lock
Sometimes you need a solution that requires a key, and this unit fits that niche perfectly. It works by securing the handles together, but it incorporates a locking mechanism that requires a physical key to release.
This is ideal for homeowners who want to ensure that no one, even someone inside the home, can easily operate the door without the proper key. The brass finish is a nice touch, though the key system means you have to keep track of those small items or risk being locked out yourself.
- Product Brand:AST
- Lock Type:Keyed bar lock
- Material Composition:Brass
- Installation Style:Handle mount
- Key Access:Yes
- Quantity Included:One lock
- Additional Feature:Unique key coding
- Additional Feature:Durable brass components
- Additional Feature:Simple manual setup
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AST Adjustable Double Door Lock
This is essentially the same reliable design as the previous model, offering a dependable way to bridge your door handles. It functions as a secondary lock, providing a layer of redundant safety behind your existing deadbolts.
If you have two sets of French doors, buying a pair of these is a smart way to ensure consistent security across your home. They are simple to use, but remember that because they use a unique key, losing your set is a real headache.
- Product Brand:AST
- Lock Type:Keyed bar lock
- Material Composition:Brass
- Installation Style:Handle mount
- Key Access:Yes
- Quantity Included:One lock
- Additional Feature:Includes three keys
- Additional Feature:Compact enough for storage
- Additional Feature:Heavy duty build
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White Door Reinforcement Lock
This is a much more subtle approach to security that focuses on the door frame rather than the handles. It is a reinforcement plate that makes it much harder for a door to be kicked in or pried open at the jamb.
While many people use these for front doors, they work well on French doors to add a solid anchor point. They are particularly useful if you have little ones, as the high mounting position keeps the lock well out of toddler reach. You will need a drill to install these properly, so make sure you have the right tools ready.
- Product Brand:Generic
- Lock Type:Reinforcement plate
- Installation Style:Screw-in
- Quantity Included:One pack
- Additional Feature:Resists forced entry
- Additional Feature:Blends with frames
- Additional Feature:Simple operation
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FlyingAMZ Security Door Brace
This brace acts like a supportive crutch for your door, pushing against the floor to prevent the door from swinging inward. It is a fantastic option if you have an older or less secure door frame that cannot handle heavy, screw-in hardware.
It is very flexible, meaning you can move it from your French doors to a standard patio door whenever you need it. The main limitation is that it requires a clear floor space to brace against, so it might not work if you have thick rugs or slanted tile right at the threshold.
- Product Brand:FlyingAMZ
- Lock Type:Floor brace
- Installation Style:Pressure mount
- Additional Feature:Adjustable height
- Additional Feature:Non-slip rubber feet
- Additional Feature:Quick to deploy