Best Sliding Glass Door Lock – Top 5 Reviews, Guide, FAQs

You’ll agree with us when we say that finding a sliding glass door lock that is unobtrusive but also secure can be difficult.

Considering this, we decided to round up all the popular sliding glass door locks we could find. We tested them rigorously for several months to find the best one.

In today’s post, we’ll talk about how sliding glass door locks work. We'll also discuss what you need to look for when finding and buying a suitable one for you. 


Sliding Glass Door Child Lock - OKEFAN 4 Pack Baby Safety Slide Window Locks

Best Sliding Glass Door Lock

Not only is this lock child-proof but it also takes very little time to install. It’s long-lasting, durable and also very inconspicuous.


Toledo Locks' Best TDP-02S

2nd Best Sliding Glass Door Lock

This product features an anti-theft design that prevents different break-in techniques from working. It’s easy to install and also very secure.


Cardinal Gates Patio Door Guardian

3rd Best Sliding Glass Door Lock

This incredible lock allows for adequate ventilation while also providing worry-free security. It works on sliding glass doors made from all kinds of materials.

After months of research and debate, we’ve concluded these three to be the best of the bunch.

Now, let’s get into the reviews for the top 5 best sliding glass door locks. 

Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?
Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?
Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?
Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?

Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?
Best Padlocks
Best Padlocks
How Much Should You Spend on a Good Padlock?

Best Sliding Glass Door Lock - Best 5 Reviews

#1: Overall Best Sliding Glass Door Lock - Sliding Glass Door Child Lock - OKEFAN 4 Pack Baby Safety Slide Window Locks Review

With its intuitive design and incredibly strong body, this lock makes it easy to secure your sliding glass doors. The lock is also child-proof and has been extensively tested to not give in to the pulls and tugs of children and babies. You can rest easy knowing that your little ones are safe when you have this lock installed.

We also appreciated how easy this lock was to install. No drills or heavy tools were needed to mount this lock onto our sliding glass door.

Features of OKEFAN 4 Pack Baby Safety Slide Window Locks - Best Sliding Glass Door Lock

  1. Dimensions: 3.9 inches x 3.6 inches x 1.9 inches
  2. Weight: 2.4 ounces
  3. Made from durable ABS Plastic
  4. Comes with strong 3M adhesive tape
  5. Customer support available
  • Very secure
    High security
  • Extremely easy to install
  • Child-proof
  • Unobtrusive
  • Affordable
  • Made of plastic so it may deteriorate over time
    High security

If you want an affordable yet secure solution that’s also easy to mount then this is definitely the product you’re looking for. It doesn’t take up too much space and looks great on your sliding glass door.

#2: Best Sliding Glass Door Lock with Free Locksmith Service - Toledo Locks' Best TDP-02S Review

You’ll have nothing to worry about with this lock installed on your door as it’s made from high-quality hardened steel. It’s resistant to common burglary tools such as hacksaws and high bolt cutters.

The product also allows for ventilation on both interior and exterior sliding glass doors while also not compromising on security.

It boasts deep-security locking screws that are concealed and very difficult to detect. As a result, a burglar would not be able to figure out how to break this lock and get inside. 

Features of Toledo Locks' Best TDP-02S

  1. Dimensions: 3 inches x 1 inches x 0.8 inches

  2. Weight: 15.2 ounces

  3. Made from high-grade hardened steel

  4. Free locksmith service included

  5. Lifetime warranty

  • Incredibly secure
    High security
  • Long-lasting
  • Weather-proof
  • User-friendly
  • Takes no time to install
  • Relatively expensive
    High security

If you’re worried about security and want something sturdy for your sliding glass door then this is the product for you. It comes with a free locksmith service and the customer support is fantastic.

#3: Best Sliding Glass Door Lock for Ventilation - Cardinal Gates Patio Door Guardian Review

This is the perfect sliding glass door lock for if you want proper ventilation inside your home. It has a smart design that prevents and discourages forced entry and it’s also great for child-proofing.

We found that it’s compatible with doors made from all kinds of materials such as vinyl, glass, Aluminum or wood.

Its small size or footprint also means that it is unassuming and will catch any burglar off-guard who may be trying to break into your home.

Features of Cardinal Gates Patio Door Guardian

  1. Dimensions: 2 inches x 4.5 inches x 7.5 inches

  2. Weight: 4 ounces

  3. Allows ventilation

  4. Great for child-proofing

  5. Works on both left-handed and right-handed doors

  • Great for ventilation
    High security
  • Works on doors made from many different materials

  • User-friendly

  • Inconspicuous
  • Budget-friendly
  • Not appropriate for exterior sliding glass doors
    High security

If you’re on the lookout for a door that allows adequate ventilation while still providing security then this product is ideal for you. It’s very easy to use and also keeps your children safe.

#4: Best Sliding Glass Door Lock Pack - Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10 Review

We were blown away just by how cheap yet high-quality these locks were. Many of us were skeptical about the quality of these locks since you get ten of them at such a cheap price. We thought that they would crack under the pressure of our testing. However, were surprised to see that not a single one of them showed even a small sign of deterioration. They held their shape perfectly and kept our sliding glass doors secure.

They’re very versatile as they can fit on tracks of many different sizes. This makes them perfect for different-sized sliding glass doors that you may have around your house. 

Features of Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10

  1. Dimensions: 6.1 inches x 4.3 inches x 1.4 inches
  2. Weight: 10.4 ounces
  3. One pack contains 10 locks
  4. Made from high-grade Aluminum
  5. Perfect for sliding glass doors, sliding windows and patio doors
  • Can fit on doors of multiple sizes
    High security
  • No tools required for installation
  • Long-lasting and durable
  • Perfect for multiple sliding glass doors
  • Great value for money
  • Some doors and windows may be too wide for this product; It’s not universal
    High security

If you have multiple sliding glass doors inside your home that you want locks for then this is definitely the product for you. They’re made from high-grade Aluminum and they’ll last you a long time.

#5: Best Large Sliding Glass Door Lock - Ideal Security SK110W SK110 Patio Door Security Bar Child-Proof Lock Review

We were impressed with this product’s intuitive and innovative design. It sits at a comfortable height in the middle of your door as opposed to the bottom of it. So, you’ll have no trouble locking and unlocking it easily.

It’s not a pressure-mounted bar. You have to screw it into the door which makes it much more secure and sturdy as compared to locks that are pressure-mounted.

Its size can also be easily adjusted over a wide range so that it’s able to be mounted onto sliding glass doors of many different sizes. 

Features of Ideal Security SK110W SK110 Patio Door Security Bar Child-Proof Lock

  1. Dimensions: 30.2 x 5.4 x 4.2 inches
  2. Weight: 1.03 pounds
  3. Made from high-quality durable Plastic
  4. 1-year warranty
  5. Adjustable between 25.75 inches and 47.5 inches
  • Child-proof
    High security
  • Simple to install
  • Unobtrusive
  • Aesthetically pleasing
  • Affordable
  • Quite heavy and bulky
    High security

If you’re looking for a large sliding glass door lock that will keep your children safe as well as keep your home secure, then this product is perfect for you. It mounts to the middle of the door, thus, making it very convenient to use.    

best sliding glass door lock

Best Sliding Glass Door Lock - Buyers’ Guide

Do I really need a Sliding Glass Door Lock?

A lot of people think that it’s pointless to have a sliding glass door lock. They think that no matter how strong the lock is, the burglar can just break the glass of the door with anything heavy and get inside regardless. While this may be true, having a lock on your sliding glass door can still act as a strong visual deterrent for a majority of burglars.

Most burglars don’t want to create a commotion when breaking in. If you have a lock on your sliding glass door, they have no choice but to create a lot of noise in order to get in. As a result of this, many burglars will decide against breaking into your house. 

What are some things to consider before buying a Sliding Glass Door Lock?

Before you go out and buy a sliding glass door lock, it’s important to know what factors you should look into. These will help you determine whether that lock is appropriate for you or not. Some of these factors are: 

  • Mounting Mechanism 

Different sliding glass door locks have different ways in which they mount onto your door so you have to keep this in mind before buying a certain lock. For some locks, you may have to drill holes into your sliding glass door while for others, you may not need any tools at all. 

  • Who Lives in Your Home 

You have to consider who lives in your home when you’re going out to buy a sliding glass door lock. Some locks are exclusively designed to keep burglars out. While other locks are designed to keep people inside your house such as children or family members with special needs safe.

If you have someone like that inside your home, you may want to consider a lock that also has child-proofing capabilities.

  • Visibility and Aesthetic 

It’s important to consider just how visible the lock is going to be when you mount it onto your sliding glass door. You should also consider whether or not it blends in with the interior decor of your home or not.

Another decision that you have to make is whether you want the lock to stand out or blend in. Both of these scenarios can have different effects on a potential burglar’s mindset. 

How do I put a lock on my Sliding Glass Door? 

Start by cleaning your glass door with warm soapy water and let it dry completely. Identify the part of your door frame behind which there is no glass. You can identify this by tapping on the door frame with a screwdriver until the sound changes.

Once you’ve identified this section, hold the lock up to it and mark the screw holes with a marker or Sharpie. Drill out the holes in the sections that you have marked and screw in your lock into these holes. 

How can I lock my Sliding Glass Door from the outside?

It’s generally a good idea to only have a sliding glass door lock on the inside. If you really want to have one on the outside then we suggest that you get a lock that only opens with a key.

How do I maintain my Sliding Glass Door Lock?

Locks are generally very durable and do not require a lot of maintenance. It’s a good idea to keep an eye on your lock and check it from time to time though. Spraying your lock with a lock lubricant such as WD-40 every few months will keep it working smoothly for a very long time.

Best Sliding Glass Door Lock - FAQs

My Sliding Glass Door Lock isn’t working. What could be wrong?

If your sliding glass door lock was working before but has now stopped working then this may be because it’s gotten too rigid. This can cause the sliding glass door lock to jam. This can easily be fixed through the use of a lock lubricant. Just spray it inside your lock and try it out. Your lock should start working.

If you’ve just installed your lock and it’s refusing to work then this may be because you haven’t installed it properly. We suggest consulting the sliding glass door lock’s manual if this is the case. 

How can I be sure that my Sliding Glass Door is properly secured?

You can ensure this simply by testing it yourself. Just lock your door and try to get in without unlocking it. This will give you a good idea of how secure your sliding glass door lock really is. If you're still not satisfied with the security of your sliding glass door then you can look towards other places. You can make it more secure by installing shatter-proof glass, etc.

How does a Sliding Glass Door Lock work?

Different locks work in different ways. The most common sliding glass door locks are mortise locks. These work by having a bolt that fits into a mortise or pocket next to your door frame.

Other locks that work on sliding glass doors work by lifting it off the track, thus, making the sliding glass door unusable.

Are there smart locks available for Sliding Glass Doors?

Yes, you can buy smart locks for sliding glass doors which can then be operated through different access mechanisms. These can be an electric keypad or even technologies such as Bluetooth. They can be quite expensive with prices going up to $200.

Is there a way to make my Sliding Glass Door even more secure?

You can only make the lock so secure. If you’re worried about the security of your sliding glass door then we suggest making the door itself more secure. This can be done by adding glass window film, installing shatter-proof glass. You can even install a glass-break sensor or alarm.

Would putting a deadbolt on my Sliding Glass Door be a good idea?

Yes. Although, it will require a lot more time and effort than other kinds of locks. Putting a deadbolt on your sliding glass door will definitely make it very secure.

Is it easy to break through a Sliding Glass Door?

It definitely is relatively easy to break into a sliding glass door. All a burglar really needs is a brick or something similar that’s heavy to break the glass and get inside your home.

Is there any way to secure my Sliding Glass Door without a lock?

As we mentioned earlier, there are other ways of securing your sliding glass doors. These can be through installing shatter-proof glass, glass-break sensors or alarms. However, if you don’t have a lock installed then the burglar won’t have to break the glass at all. They can just simply open your sliding glass door and walk in. This is why we suggest that you install a lock first before you start securing your sliding glass door further.

Final Verdict

It’s essential to find the best possible lock for your sliding glass door. This is because security should be of the utmost importance when it comes to your home and the people inside it.

In the end, we have to go with the Sliding Glass Door Child Lock - OKEFAN 4 Pack Baby Safety Slide Window Locks. They’re incredibly easy to use and they will last you a very long time.

And with that, we’re at the end of our post for the best sliding glass door locks.

Let us know in the comments what sliding glass door lock you’re using in your home.

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