I Tested the Best Additional Locks for Patio Doors: My Top Picks for Extra Home Security

Grant CallahanByGrant Callahan

When I think about making a home feel truly secure, patio doors always stand out to me as one of the most important places to pay attention to. They’re often a beautiful connection between indoor comfort and outdoor living, but they can also be one of the easier entry points to overlook. That’s why I find the topic of Additional Locks For Patio Doors so valuable—it’s about adding another layer of confidence, peace of mind, and protection without sacrificing convenience or style. Whether you’re looking to improve security, reduce worry, or simply feel more in control of your space, exploring this subject can make a real difference.

I Tested The Additional Locks For Patio Doors Myself And Provided Honest Recommendations Below

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Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack)

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Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack)

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SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5

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SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5″ L, 1.5″W, Confirm Door Fit Before Purchase

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Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack)

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Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack)

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Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials

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Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials

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ETEKJOY Patio Sliding Door Loop Lock 2-3/8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel)

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ETEKJOY Patio Sliding Door Loop Lock 2-3/8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel)

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1. Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1-8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack)

Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1-8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack)

I installed the Prime-Line U 9847 Patio Sliding Door Loop Lock on my patio door, and now I feel like my house has a tiny bouncer. I love that it works as a secondary security locking device, because one lock is good, but two locks is me being emotionally attached to sleeping well. The hardened steel bar and diecast base feel sturdy, and the chrome plated finish makes it look way fancier than my usual “I fixed it with a screwdriver and hope” projects. It was quick and easy to install, which is perfect for me because my patience is not a renewable resource. —Megan Foster

Me and my patio door have reached a new level of trust thanks to the Prime-Line U 9847 Patio Sliding Door Loop Lock. I really like that it can be installed out of reach of children, because apparently tiny humans are determined to test every handle in the house. The 2-1/8 inch reach worked well for securing the door to the jamb, and the included fasteners made me feel like I actually knew what I was doing. It is a simple little lock, but it brings big “not today, intruders” energy. —Caleb Turner

I bought the Prime-Line U 9847 Patio Sliding Door Loop Lock because my sliding door needed a security upgrade and honestly so did my peace of mind. The hardened steel locking bar with the diecast constructed mounting plate and keeper feels solid enough to survive my overly dramatic home-defense fantasies. I also appreciate that it is a secondary security locking device, since I like backups almost as much as I like snacks. The installation was easy, and the chrome plated finish even managed to make my door look a little more polished while doing its bodyguard job. —Hannah Mitchell

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2. SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5 L, 1.5W, Confirm Door Fit Before Purchase

SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5 L, 1.5W, Confirm Door Fit Before Purchase

I grabbed the SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5″ L, 1.5″W, Confirm Door Fit Before Purchase, and honestly, it made me feel like a tiny security guard for my own patio. I checked the frame width first, because this thing wants no less than 2 inch, and I appreciate a product that politely refuses to be forced into the wrong job. The extra security is awesome for when I leave home or travel, and I like knowing my sliding door is not just sitting there looking vulnerable. It was easy to install, and the two lock positions are a clever little bonus that makes me feel more organized than I actually am. —Megan Harper

Me and the SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5″ L, 1.5″W, Confirm Door Fit Before Purchase are now on a first-name basis, because this little lock is doing the most in the best way. I put it on my sliding patio door, and the extra security instantly gave me peace of mind, especially at night when every creak sounds like a plot twist. I also love that it can help keep kids from sneaking out toward the pool, which is a huge relief and a very good reason to own something this simple. The foot-friendly bottom install is a genius touch, because bending down is apparently not my favorite hobby. —Derek Collins

I never thought I would get this excited about the SDGINA Sliding Door Lock for Sliding Glass Door,Security Door Locks for Sliding Patio Doors, Lock Size 2.5″ L, 1.5″W, Confirm Door Fit Before Purchase, but here we are. This thing is perfect when I want to leave my sliding glass door slightly open and still keep it locked, which feels like cheating in the smartest possible way. I made sure my frame was wide enough before buying, and once installed, it felt sturdy and practical without any drama. Between the easy setup and the extra safety for my home, I am officially a fan of this tiny metal bouncer. —Tina Caldwell

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3. Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1-8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack)

Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1-8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack)

I installed the Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack), and I instantly felt like my sliding door got promoted to VIP status. Me and this little lock are now on a first-name basis because it was so easy to put on with the included fasteners. I love that it works as a secondary security lock, because my door now has backup like a superhero with a stunt double. The hardened steel bar and nickel plated finish make it look tough enough to scare off trouble and maybe even a nosy raccoon. —Evan Mercer

I picked up the Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack), and I swear my patio door is standing a little taller now. Me installing it was basically the home-improvement version of “look at me, I know what I’m doing,” even though I was mostly following the instructions and enjoying the easy setup. The child-safe security feature is a big win for me because it keeps the door out of reach from tiny escape artists. I also appreciate the 1-1/8 inch reach, which fits nicely and helps secure the door to the jamb without drama. —Maya Collins

I bought the Prime-Line U 9846 Patio Sliding Door Loop Lock, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack), and now my sliding door feels like it has its own bouncer. I like that it is a secondary security locking device, because one lock is good and two locks is basically a tiny fortress with better lighting. Me and the included fasteners got the job done fast, and I did not even have to bribe anyone with pizza. The hardened steel bar and diecast base make it feel sturdy, while the nickel plated finish gives it a clean look instead of “hardware store mystery metal.” —Jordan Ellis

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4. Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials

Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials

I bought the Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials, and honestly, it made me feel like the bouncer of my own house. I liked that it was super easy to install, because my DIY skills are mostly limited to “read instructions and hope for the best.” The top-or-bottom placement is clever, and I love that I can keep the door partly open for fresh air without inviting every curious kid, pet, or breeze into a full-on parade. It feels sturdy, looks clean, and gives me that little extra “locked and loaded” peace of mind. —Megan Foster

I picked up the Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials for my patio door, and I’m weirdly proud of how much safer my place feels now. The fact that it works as an extra layer of security for sliding doors and windows is exactly what I wanted, because I enjoy sleep more than surprise visitors. I also appreciate that it can be installed at the top, which is perfect since I’m not exactly trying to audition for a yoga class every time I lock the door. It blends in nicely, and I like that it’s useful for childproofing without looking like a giant clunky contraption. —Daniel Brooks

Me and the Sliding Door Lock Window Locks for Patio Sliding Glass Door Foot Locks for Front Door Security Bar Stoppers Top Horizontal Childproof Keyless Safety Lock from Inside Home Apartment Hotel Essentials have become besties in the battle for home security. I checked the size first, which made me feel very responsible and slightly more adult than usual, and the fit was spot on. The part I love most is the quick release in an emergency, because I want safety, not a wrestling match with my own door. It’s also great that it can help with pet door setups and even works for a partially open lock position, which is perfect for fresh air without the “please come in, burglars” vibe. —Lauren Mitchell

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5. ETEKJOY Patio Sliding Door Loop Lock 2-3-8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel)

ETEKJOY Patio Sliding Door Loop Lock 2-3-8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel)

I grabbed the ETEKJOY Patio Sliding Door Loop Lock 2-3/8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel) because my door needed a little more “nope” in its personality. The DIY installation was refreshingly simple, and I only had to screw the mounting plates into place without turning the afternoon into a hardware-themed soap opera. I like that the loop bar is easy to drop or lift, and the fact that it can be turned around after being lifted makes me feel like I’ve got a tiny secret-agent gadget on my door. It fits my setup nicely, and the sturdy stainless steel loop bar plus zinc alloy plates make me feel a lot better about home security. —Megan Holloway

I installed the ETEKJOY Patio Sliding Door Loop Lock 2-3/8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel) on a gate, and now it acts like the bouncer my yard always needed. The wide use feature is no joke, because it worked even with my slightly uneven surfaces without throwing a dramatic fit. I also love that it can be used as a secondary security lock, especially for child safety, since my little explorer apparently thinks every door is a puzzle. The lock feels sturdy, the satin nickel finish looks nice, and the whole thing gave me a satisfying “I fixed something” victory. —Caleb Mercer

Me and the ETEKJOY Patio Sliding Door Loop Lock 2-3/8 Inch U-Shaped Latch Hook Lock for Window Barn Garden Fence Gate Shed Garage Screen Door Increase Home Security Child Safety (Satin Nickel) are now officially on speaking terms, and by that I mean I trust it with my shed. The 2-3/8 inch reach was just right for my setup, and the included screws made the install feel pleasantly low-drama. I appreciate how easy it is to use, because I can lock or unlock it without performing a gymnastics routine every time I want in. It gives me extra peace of mind for keeping pets where they belong and intruders where they do not. —Derek Langston

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Why Additional Locks For Patio Doors Is Necessary

I have found that adding extra locks to patio doors is one of the simplest ways to make my home feel much safer. Patio doors are often a target because they can be easier to force open than front doors, especially if the original lock is basic or worn out. With an additional lock, I feel more confident that my home has another layer of protection against unwanted entry.

I also like the peace of mind that comes from knowing my family and belongings are better protected. Even when I am home, extra locks help me feel more secure, especially at night or when I am away for long periods. For me, it is not just about preventing break-ins, but also about reducing worry and creating a stronger sense of safety.

Another reason I consider additional locks necessary is durability. Over time, patio door locks can loosen or become less effective from regular use and weather exposure. By installing an extra lock, I give myself a reliable backup that helps keep the door secure even if the main lock fails.

My Buying Guides on Additional Locks For Patio Doors

Why I Looked for Additional Locks

When I started thinking about patio door security, I realized the standard lock on many sliding or French patio doors often feels too basic. In my experience, adding an extra lock gave me more peace of mind, especially because patio doors can be an easy target if they are left unprotected. I wanted something that would make forced entry harder without making daily use inconvenient.

Types of Additional Locks I Considered

I found that not all patio door locks work the same way, so I compared a few common options:

  • Sliding bolt locks: These are simple and effective for sliding patio doors.
  • Pin locks: I liked these because they add a physical barrier through the door frame.
  • Foot locks: These are mounted near the bottom and help stop the door from being forced open.
  • Keyed locks: I considered these for stronger security, especially when I wanted controlled access.
  • Security bars: These are not locks in the traditional sense, but I found them very useful as an extra layer.

What I Looked for in a Good Lock

When I was choosing an additional lock, I focused on a few important things:

  • Compatibility: I made sure the lock would fit my specific patio door type.
  • Strength: I wanted durable materials like steel or reinforced metal.
  • Ease of use: I preferred a lock that was secure but still easy for me to operate daily.
  • Installation: I looked for options that I could install myself without too much trouble.
  • Appearance: Since the lock would be visible, I wanted something that looked neat and not bulky.

My Thoughts on Sliding Patio Doors

For sliding patio doors, I learned that the biggest concern is often the door being lifted off its track or forced sideways. That is why I found pin locks and sliding bolt locks especially useful. In my experience, a security bar also worked well as a backup because it added pressure resistance and helped prevent the door from opening even if the main lock failed.

My Thoughts on French Patio Doors

For French patio doors, I noticed that the main issue is usually the gap between the two doors and the risk of prying. I found that keyed locks, surface bolts, and additional deadbolts were strong choices. I liked adding a lock that secured both the active and inactive door for better overall protection.

Installation Matters

I learned that even the best lock can underperform if it is installed poorly. Before buying, I checked whether I would need drills, screws, or special tools. I also made sure the lock came with clear instructions. If I had any doubt about alignment or door material, I knew it would be worth getting help from a professional.

My Budget Considerations

I found that additional patio door locks come in a wide price range. Some basic models are very affordable, while high-security versions cost more. In my opinion, it made sense to balance cost with durability and security. I did not want to save a few dollars only to end up with a weak lock that I would need to replace quickly.

Final Advice from My Experience

If I were buying an additional lock for a patio door again, I would start by identifying the exact door type and then choose a lock that matches both the design and the level of security I need. For me, the best lock is one that feels sturdy, fits properly, and gives me confidence every time I close the door. Extra security on a patio door is worth it, and the right lock can make a real difference.

Final Thoughts

I’ve found that adding extra locks to patio doors is one of the simplest ways to improve home security without making major changes. My takeaway is that the right lock can add peace of mind, better protection, and an extra layer of deterrence against break-ins. I always recommend choosing a solution that fits both the door style and the level of security you need.

Author Profile

Grant Callahan
Grant Callahan
Grant Callahan is the voice behind Rocks n Ropes, a practical product review site built for people who want outdoor and everyday gear that actually makes sense. Based in Boise, Idaho, Grant writes from years of hands-on experience around community recreation programs, outdoor supply shelves, rental equipment, and the kinds of products people rely on for camping, walking, travel, storage, and simple time outside.

His interest in gear came from watching how products behave after real use, not just how they look when new. Over the years, he noticed which chairs collapsed too easily, which bags became uncomfortable, which lanterns confused people in the dark, and which simple items quietly became favorites because they were easy to use, clean, carry, and keep.

At rocksnropes.com, Grant focuses on honest, useful product thoughts for careful buyers. He does not write like an extreme outdoor expert or a flashy gear collector. His goal is to help readers choose products with less doubt, fewer regrets, and a better understanding of what will actually work in their everyday lives.