Many homeowners install basic deadbolts and assume their entryways are sealed tight. They ignore the structural weakness inherent in double doors, which are often the easiest entry point for an intruder.
If you want to protect your home, you need specialized hardware. Identifying the Best French Door Security Locks is the difference between a secure house and a vulnerable one. Keep reading to learn how to lock down your double doors effectively.
Key Takeaways
- Prioritize all-metal construction over plastic components to ensure the hardware can withstand heavy physical force or a kick.
- Verify the adjustable width of the device matches the distance between your two door handles or knobs.
- Check if the installation requires permanent drilling or if you prefer a removable security bar that leaves no marks on your door.
- Consider whether you need a keyed locking mechanism for added security or if a simple sliding latch suits your daily routine.
- Ensure the finish of the metal matches your existing door hardware to maintain a clean aesthetic while increasing safety.
| Top Overall Choice |  |
Adjustable French Door Security Lock | Easily adjusts for fit | Resists lock picking | Compact design | View on Amazon | Read Review |
| Best Heavy Duty |  |
All-Metal French Door Barricade | Extremely durable build | Includes storage pouch | Secure keyed locking | View on Amazon | Read Review |
| Best Kick Resistance | SecurityMan Unibody Aluminum Door Lock | High impact resistance | Solid aluminum construction | Easy to adjust | View on Amazon | Read Review | |
| Police Approved Security |  |
PATLOCK French Door Security Lock | Police certified design | Fits horizontal handles | Highly visible deterrent | View on Amazon | Read Review |
| Best Handle Compatibility |  |
Reinforced French Door Security Lock | Prevents door kicking | Works with knobs | No mounting hardware | View on Amazon | Read Review |
| Best Simple Latch |  |
Alise Stainless Steel Gate Latch | Permanent installation | Weatherproof stainless steel | Very low profile | View on Amazon | Read Review |
| Best For Families | Childproof Adjustable French Door Lock | Childproof security | Lightweight aluminum | Fully adjustable | View on Amazon | Read Review | |
| Best Value Bundle |  |
Double Set French Door Bar | Two locks included | Secure keyed access | Durable metal build | View on Amazon | Read Review |
| Most Reliable Fit | Adjustable Kick-Resistant Door Lock | Highly adjustable | Strong kick resistance | Secure grip | View on Amazon | Read Review | |
| Best Versatility | Dual Mode French Door Barricade | Dual locking modes | Heavy duty build | Versatile handle support | View on Amazon | Read Review |
More Details on Our Top Picks
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Adjustable French Door Security Lock
If you want the most versatile option for your home, this is the one to pick. It features a flexible design that grips onto different handle widths, making it a reliable barrier against unwanted entry.
You will appreciate the sturdy black finish that blends well with most door hardware. Just keep in mind that the adjustable mechanism requires a moment of focus to set correctly the first time.
- Lock Type:Adjustable Barricade
- Primary Material:Alloy Steel
- Installation Method:Tool free
- Package Quantity:1
- Additional Feature:Scratch resistant coating
- Additional Feature:Fits most handle styles
- Additional Feature:Quick release mechanism
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All-Metal French Door Barricade
This lock is built like a tank. It uses all-metal construction to create a physical block between your door handles, which stops them from turning even if someone manages to bypass your primary deadbolt.
The inclusion of a storage pouch is a thoughtful touch for when you need to store the device away. It is somewhat heavy, though, so make sure your handles can support the weight of a security bar.
- Lock Type:Security Barricade
- Primary Material:Metal
- Installation Method:Manual tensioning
- Package Quantity:1
- Additional Feature:Keyed security lock
- Additional Feature:Industrial grade finish
- Additional Feature:Prevents handle rotation
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SecurityMan Unibody Aluminum Door Lock
SecurityMan focuses on pure strength. With a solid half-inch unibody aluminum frame, this lock is designed specifically to withstand the force of a potential kick-in attempt.
It provides a tight, secure grip on your handles that stays put under pressure. Because of its rigid design, it may not fit every single handle shape, so verify your measurements before ordering.
- Lock Type:Unibody Barricade
- Primary Material:Aluminum
- Installation Method:Clamp on
- Package Quantity:1
- Additional Feature:Kick proof design
- Additional Feature:Slim profile
- Additional Feature:Weather resistant finish
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PATLOCK French Door Security Lock
This device is the gold standard if you prioritize official recognition and verified protection. It is a specialized tool designed specifically for double doors equipped with horizontal handles.
By locking the handles together, it stops the door mechanism from operating entirely. It is quite large, which makes it a highly visible deterrent to anyone looking at your patio from the outside.
- Product Brand:PATLOCK
- Lock Type:Handle clamp
- Installation Method:Over handle
- Package Quantity:1
- Additional Feature:Tamper proof design
- Additional Feature:No keys needed
- Additional Feature:Easy visual inspection
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Reinforced French Door Security Lock
This reinforced lock works well with a variety of knobs and levers. It acts as a solid wedge that prevents the door from being pushed open, giving you peace of mind while you are away.
The installation is straightforward, as it requires no drilling into your wood or metal frames. One limitation is that it does add a bit of bulk to the middle of your doors, which some might find aesthetically distracting.
- Lock Type:Security clamp
- Primary Material:Reinforced steel
- Installation Method:Slip on
- Package Quantity:1
- Additional Feature:Scratch protective lining
- Additional Feature:High tension hold
- Additional Feature:Rust resistant coating
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Alise Stainless Steel Gate Latch
Sometimes the best solution is the simplest one. This heavy duty flip latch is perfect if you prefer a permanent, low-profile fixture that keeps your doors securely closed.
Constructed from stainless steel, it will not rust or degrade over time even if your French doors face the elements. You will need to use a drill to install this, so it is a more permanent commitment than the bar-style locks.
- Product Brand:Alise
- Lock Type:Flip latch
- Primary Material:SUS304 Stainless Steel
- Installation Method:Screw mount
- Package Quantity:1
- Additional Feature:Anti-theft design
- Additional Feature:Heavy duty hardware
- Additional Feature:Smooth rotating action
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Childproof Adjustable French Door Lock
If your primary concern is keeping toddlers from wandering outside, this is your go-to device. It features an adjustable unibody frame that locks firmly in place, keeping the doors shut tight.
It is lightweight enough to be moved easily but strong enough to deter unauthorized entry. Just ensure the locking mechanism is tightened sufficiently to prevent a determined child from wiggling it loose.
- Lock Type:Tension bar
- Primary Material:Aluminum
- Installation Method:Tool free
- Package Quantity:1
- Additional Feature:Easy to hide
- Additional Feature:Scratch-free padding
- Additional Feature:Simple adjustment knob
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Double Set French Door Bar
Getting two locks for the price of one is a great way to secure both sets of French doors in your home. This set features all-metal construction to ensure that both entry points are equally protected.
The keyed locking mechanism adds an extra layer of security compared to basic friction bars. Because you are getting two units, this is the most efficient choice for larger homes with multiple patio exits.
- Lock Type:Security bar
- Primary Material:Metal
- Installation Method:Manual
- Package Quantity:2
- Additional Feature:Matching keys
- Additional Feature:Heavy duty finish
- Additional Feature:Versatile handle fit
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Adjustable Kick-Resistant Door Lock
This lock provides a highly precise fit for various knob widths, ensuring there is no wiggle room for an intruder. Its adjustable design is excellent for doors that do not conform to standard handle spacing.
The unit is built to prevent kick-ins by distributing force across the door handles rather than the latch itself. It is a bit more involved to set up than the simpler slip-on models, but the added stability is worth it.
- Lock Type:Adjustable security bar
- Primary Material:Steel alloy
- Installation Method:Tension
- Package Quantity:1
- Additional Feature:Fits various knob widths
- Additional Feature:Non-slip interior
- Additional Feature:Robust construction
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Dual Mode French Door Barricade
This device offers the unique ability to choose between keyed and keyless modes, depending on your specific needs for that day. It is a heavy-duty barricade that handles both knobs and levers with ease.
The all-metal construction feels solid and reliable in your hands. It is a bit bulkier than other options, which means it might not fit if you have very narrow clearances between your door handles.
- Lock Type:Barricade
- Primary Material:Metal
- Installation Method:Clamp
- Package Quantity:1
- Additional Feature:Keyed override
- Additional Feature:Easy grip tensioner
- Additional Feature:Weather resistant finish
Frequently Asked Questions
Do I need to lock both doors to ensure security?
Yes, you must secure both the active and the inactive door to keep the entry point safe. The inactive door is usually the weakest link, so a top and bottom bolt is essential to prevent someone from prying it open.
Can I install these locks on my own?
Most homeowners with basic DIY skills can install surface bolts in under thirty minutes. You only need a drill, a screwdriver, and a measuring tape to get the job done right.
Will these locks prevent my doors from warping?
A security lock keeps the doors pulled tight, but it cannot fix existing warping issues. If your doors are already bowed, you should address the weatherstripping or the frame alignment before installing a new lock.
Are these locks compatible with smart home systems?
Most manual French door security bolts are purely mechanical and do not connect to apps or Wi-Fi. If you want smart integration, you should look for a primary deadbolt that covers the main handle while keeping the secondary door secured with a traditional manual bolt.
How much should I expect to spend on a quality lock?
You can find reliable, heavy-duty bolts for between twenty and fifty dollars per unit. Spending more usually gets you better materials, like solid brass, which will last for years without showing signs of wear.
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