Best Sliding Glass Door Locks

Sliding patio doors are convenient, but they can be a hazard without the proper locks. Check out our picks for the best sliding glass door locks.
Written by | Updated October 31, 2019
Best for Security
Toledo Sliding Patio Door LockToledo Sliding Door Patio Lock
  • Antitheft design
  • Hardened steel bolt
  • Keys included
  • Antitheft design
  • Hardened steel bolt
  • Keys included
Best for Installation
Lion locksLion Locks
  • Designed simply
  • Suitable for doors and windows
  • Available in packs of 10
  • Designed simply
  • Suitable for doors and windows
  • Available in packs of 10
Best for Baby Proofing
OKEFAN baby proofing lockOKEFAN Baby Safety
  • Installs quickly
  • Comes in multiple colors
  • Has no small pieces for choking hazards
  • Installs quickly
  • Comes in multiple colors
  • Has no small pieces for choking hazards

Toledo Sliding Glass Door Lock: Tough Security for a Minimal Price

Sometimes the standard mortise locks on sliding doors aren’t enough to withstand a home invader. An additional lock can prevent invaders from damaging the lock or taking the door off the track. We picked these sliding glass door locks because they strengthen the common weaknesses found in many patio doors.

With the Toledo lock, about $40, and a few standard tools, your sliding glass door can become a lot tougher than any potential intruder. It’s resistant to bolt cutters and hacksaws so it’s a seriously tough nut to crack. For additional security, it comes with keys to lock and unlock the bolt when you want to use the sliding glass patio door.

How Sliding Glass Door Locks Compare

Product
Image
List Price *
Tools Required
Placement
Size
Units Per Order
Learn More
Best for Door Security
Best for Installation
Best for Baby Proofing
Best Security Bar
Best Secondary Lock
Toledo Patio Lock Lion Locks OKEFAN Baby Safety SK110 Security Bar LockiT Double Bolt Lock
Toledo Sliding Patio Door Lock Lion locks OKEFAN baby proofing lock SK110 security bar product image LockiT Sliding Door Bolt
$37.69 $14.87 $12.95 $20.05 $29.97
Yes No No Yes Yes
Door track Door track On glass Doorframe Doorframe
3 x 1 x 8 in. 6.1 x 4.3 x 1.4 in. 3.9 x 3.6 x 1.9 in. 30.2 x 5.4 x 4.2 in. 8.8 x 1.6 x 4 in
1 10 4 1 1
View on Amazon View on Amazon View on Amazon View on Amazon View on Home Depot

Amazon.com prices as of 10/31/19 11:28 p.m. MST.

Top Sliding Glass Door Security Locks

  • Toledo Sliding Door Patio Lock: Best for Security | Read Review
  • Lion Locks: Best for Easy Installation | Read Review
  • OKEFAN Baby Safety: Best for Baby Proofing | Read Review
  • SK110 Security Bar: Best Security Bar | Read Review
  • LockiT Double Bolt Sliding Door Lock: Best Secondary Lock | Read Review

Reviews: Best Sliding Glass Door Locks

Most Secure
Toledo Sliding Patio Door Lock

Toledo Sliding Glass Door Patio Lock

#1. Toledo Sliding Glass Door Patio Lock: Best for Security

How do you keep burglars from breaking in through your patio door? Simple. Make your patio door stronger than the burglars.

The Toledo sliding glass patio door lock bolt is made of 1 ¾-inch hardened steel and contains concealed screws. These features keep the bolt tamper resistant and in place. Its anti-theft design also includes two hidden screws that prevent tampering. This level of security requires a more involved installation, but the instructions are clear and easy to follow.

The only way to lock and unlock the Toledo sliding glass door lock is with the keys that come with it. This set of keys is especially helpful if you want to keep curious toddlers safely inside and away from pools or balconies.

Whether you’re looking to keep your family safe or prevent uninvited guests from getting inside, the Toledo is the best sliding glass door security lock we found if security is your primary focus.

Pros

  • Keys included
  • Boltcutter - and hacksaw-resistant metal
  • Additional concealed screws for antitheft design

Cons

  • More advanced installation
  • No additional installation help
Easiest Installation
Lion locks

Lion Locks

#2: Lion Lock: Best for Easy Installation

It takes only seconds to install a Lion Lock on your sliding glass door. There are no moving parts, no tools required, and no holes to drill. Its easy installation makes the Lion Lock an excellent choice for renters or anyone in a temporary living situation.

The Lion Lock fastens tightly with two simple thumbscrews and a secure rubber grip that clings tightly onto your door’s track. This prevents the door from sliding back far enough for someone to slip in or out.

We found one design flaw with the Lion Lock. It blocks access for those trying to get in by stopping the sliding door, but it’s easy to undo from the inside. So kids, teens, or other adults might be able to loosen the thumbscrews and open the door to go outside.

Lion Locks come in packs of 10 so you can secure your windows too. They can hold up stubborn windows or keep others closed, depending on your needs.

Pros

  • Affordable
  • Easy to install
  • Available in packs of 10

Cons

  • Removable from the inside
  • Not suitable for heavy widows
Best for Baby Proofing
OKEFAN baby proofing lock

OKEFAN Baby Safety

#3: OKEFAN Baby Safety: Best for Baby Proofing

If you live in a home with a pool or balcony on the other side of a sliding door, your child might be tempted to explore without you around. That’s why babyproofing your home is so important. Items like the OKEFAN baby safety lock are a smart way to keep littles safe without restricting your access to areas outside.

The OKEFAN Baby Safety sliding door lock is a simple peel-and-stick device that works with sliding glass doors, cabinets, and more. Stick it on the glass panel to block the sliding door. Then when you want to open the door, press down the pedal and slide back the door. We suggest installing the OKEFAN out of reach of your kiddos to avoid any accidents.

Because it’s made of plastic, this sliding glass door lock is designed to keep people in more than out. If you’re want to boost security, the OKEFAN lock can help, but it’s not as tough as our other picks.

Pros

  • Easily installed
  • Available in multiple colors
  • Easy for parents, hard for kids

Cons

  • Too big for some sliding doors

More Sliding Glass Door Locks Worth a Look 

There are so many sliding glass door locks out there to keep your home safe, we couldn’t pick just three. Here are a few other candidates to make your sliding glass door and home more secure.

#4: SK110 Security Bar: Best Security Bar

While the SK110 Security Bar requires some installation, it’s something you can finish before the commercial break’s over. The SK110 sits horizontally on your doorframe to block the sliding portion of your patio door. When you want to open the door, lift the bar and set it vertically on the other side of the door.

The SK110 also comes with an optional childproofing tab that makes lifting the bar difficult for little fingers. It can’t keep everyone inside though. Adults and teenagers can use this bar pretty easily, which is good and bad.

So while the SK110 won’t stop any teenagers from sneaking out of your home, it will block intruders from entering your sliding patio door or taking it off the track.

#5: LockiT Double Bolt Sliding Door Security Lock: Best Secondary Lock

Most patio doors have a handle with an attached lock. While this provides some security, these locks can be bypassed by someone trying to get in or out. For anyone looking to boost security to their existing lock, the LockiT double-bolt lock is our choice.

Plus, you can place the bolt as far up or down the doorframe as you like, making it a suitable choice for homes with small children.

The LockiT sliding glass door lock requires a drill and a little bit of know-how, but all its parts come in the package. Start by fastening the latch onto the door frame and lining up the lock to match it. We found in-depth video instructions as well as a user manual to help you through the process.

Before You Buy a Sliding Glass Door Lock 

Adding a security lock can help you protect the door, but you also need to protect the glass. If you’re concerned about intruders, strengthening the glass is a smart second line of defense.

Start by adding glass window film. Much like the stick-on glass protectors for your phone screen, this film keeps your glass door from shattering. You can also find window film that mimics frosted glass to lower visibility into your home.

You should also add curtains and keep your blinds and shades closed when your door isn’t in use. Otherwise, unwanted guests can see inside your home.

While they’re a last line of defense, glass break sensors are helpful during a home invasion. When an intruder shatters your glass door, the glass break sensor will notify your home security system and you. This alert tells you exactly when your glass door was broken and connects you to the right authorities to get rid of the intruder.

Sliding Glass Door Locks FAQs

How do you fix a sliding glass door lock?

Mortise locks are the most common type of outdoor or indoor patio lock. These locks are secure, but they’re also prone to breaking and bending after time. If your sliding glass door lock breaks, the best solution is usually to replace it.

Start by removing the mortise lock and handle from your patio door. There are often small screws inside holding the lock and handle to the door. Once the lock is off, look for bends or damage in the latch to determine where the problem is. If the latch is too bent, you might have to replace it with a new mortise lock.

What is the best lock for a sliding glass door?

While we chose the locks in our lineup to fit different situations, the best lock for your sliding door depends on your situation. Keep your kids and pets out of trouble by installing your new lock out of their reach high up on the doorframe.

If you want to keep intruders out, look for locks that can resist tampering and lock picking. Locks with keys are often the most secure and hardest to break. Adding multiple locks, a glass film, and a glass break sensor can create more thorough protection for your home.

How do you lock a sliding glass door from the outside?

It’s generally best to keep locks for sliding glass doors on the inside. But if you want to install one on the outside, get a lock that opens only with a key. There are plenty of ways to secure a sliding glass door from the outside and inside.

Are there smart locks for sliding glass doors?

Yes, but they’re expensive and require much more installation expertise. The Padiolok, for example, uses keyless entry through a keypad and a passcode. If you’re willing to drop the near $200 for this lock, we recommend it.

We didn’t include this smart lock in our main lineup because of the vast price difference.

How We Picked the Best Sliding Glass Door Locks 

We combed the web for the best sliding glass door locks by reading customer reviews and watching installation videos. We checked some of the web’s most popular hardware sites for the highest-rated products with plenty of reviews and highly regarded name brands. Learn more about how we rank this and all our other best-of lists by reading our full methodology.

*Amazon.com list price as of 10/31/19 11:28 MST. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Safewise.com utilizes paid Amazon links.

Certain content that appears on this site comes from Amazon. This content is provided “as is” and is subject to change or removal at any time.

Written by Katie McEntire

Since 2013, Katie has written marketing copy, long-form posts, reviews, and blogs. She began her career as a writer and reviewer with the mission to recommend only the best products for her readers. She’s designed tests, evaluated products, and written reviews on a range of subjects such as appliances, power tools, and software. Today, she applies these research and writing skills on the SafeWise team to explore the world of home, auto, and internet security. Learn more

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