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The Best Sliding Glass Door Locks Guide & Reviews of 2020

Debra Broxton
October 4, 2020

Often, people do not realize the potential danger of glass sliding doors but pay their attention to this type of door’s appearance. There is no doubt that glass sliding doors can brighten up any balcony, kitchen, patio, or living room. But do not forget that glass doors give a beautiful view of all your property and everyday life, which can play into the hands of robbers and burglars. To enjoy the beauty and safety of glass sliding doors at the same time, check out our list of the seven most secure locks for sliding glass doors.

Best for Heavy-Duty

#1 Defender

Total Score 9.8/10


  • Safe for children
  • Amazon's choice
  • Good price

Best For Decks / Balconies

#2 Ideal

Total Score 9.7/10


  • Perfect height location
  • Verified manufacturer
  • Adjustable width

Best For Concealment

#3 Cal-Lock

Total Score 9.6/10


  • Withstands up to 1000 poods
  • Safe for children
  • Justified price

What We Did to Find the Best

To find the best locks for glass sliding doors, we attracted specialists from various fields, including researchers, writers, repair specialists, and specialized sites users. First, we identified the five most important metrics that buyers most often pay attention to when buying locks for glass sliding doors. So, the following indicators are essential for buyers: Features (monitoring period, 24/7 alerts), Price, Ease of Use, Support (chats, email, telephone), and Level of Reliability (positive and negative reviews). After we decided on the most important indicators, our experts did extensive and challenging work. They awarded each lock a score from 1 to 10 for each metric. The scores of all the experts were summed up and revealed the average value for each lock. We understand that clients do not always have the time and desire to research each lock, so we took on this mission. We hope that this will help many families enjoy glass sliding doors’ beauty without worrying about loved ones and property’s safety.


Functional Features

0-10

monitoring period, 24/7 alerts, disaster protection etc.



Usability

0-10

installation, maintenance, service support


Affordability

0-10

monthly fee, money-back, trial period



Customers’ Support

0-10

telephone, email, chat, and other channels


Customers’ Score

0-10

BBB.org and Trustpilot (positive, negative reviews)

Top 7 Best Sliding Glass Door Locks in 2020

Glass sliding doors that glide on rails will naturally not work with regular locks. But that's not a reason to give up the great view from your living room, kitchen, or patio. Below you will find the seven best glass sliding door locks in 2020. Locks from this list will keep you, your loved ones, and your property safe and keep burglars out of your home.

1. Defender Security U9846

The overall score is 9.8/10

Specs

10.0/10



Customer Support

10.0/10



Payment Issues

10.0/10



Usability

9.5/10



Credibility

9.5/10



Starting Price 

$13.45


BBB Rating A


  • Best for Heavy-Duty

DIY Setup

YES

Trial Version

30 days

Defender locks have earned a good reputation and thousands of positive customer reviews. This is because their locks keep millions of people safe. The lock mechanism can withstand a load of more than 800 pounds, which means that even the most robust and most potent burglar cannot break it. The lock has a spring-loaded mechanism from the Defender, which protects smart teenagers and robbers from opening it and entering the house. For installation, you only need a screwdriver to put in the screws. Of course, this can take some skill and dexterity, but it shouldn't be too much of a hassle. Analysis of customer reviews and expert ratings shows that this is the best glass door lock in 2020.

The design of Defender locks is available in 4 colors, which is very convenient if you don't want the lock on your glass sliding door to stand out from the overall look. The downside of such an obscure element may be that criminals need to get close enough to the house to make sure the door is locked.

Pros:

  • Safe for children
  • Amazon's choice
  • Good price
  • Available in 4 colors
  • Will not stand out
  • Withstands exposure to 800 poods
  • Hard to break

Cons:

  • May not fit all types of frames
  • The installation will require a screwdriver
  • The process of opening and closing a little tricky

2. Ideal Security SK110 Patio Door Security Bar

The overall score is 9.7/10

Specs

10.0/10



Customer Support

10.0/10



Payment Issues

10.0/10



Usability

9.5/10



Credibility

9.0/10



Starting Price 

$31.55


BBB Rating A +


  • Best For Decks / Balconies

DIY Setup

YES

Trial Version

30 days

For balconies, terraces, and patios, the Ideal lock is perfect for this type of sliding door. Installed from directly in the middle of the doorframe so that burglars can immediately see that the house and family are protected. All family members will be comfortable using this lock due to the perfectly matched positioning height. For families with small children, this lock is also suitable because it is protected from children. With all this, the lock copes with its primary function with a bang. The lock mechanism is almost impossible to break. The adjustable width and ease of installation make this lock even more suitable for families of all categories.

The lock design is universal and is designed for doors that are at least 25.5 "wide and at least 47.5” wide. Unfortunately, such a lock cannot be used on windows, since the design is intended exclusively for glass sliding doors. You can find a list of products for windows on the Ideal website. You can test the lock and use it for 30 days for free. Ideal products have long established themselves in the door locks market, and experts and buyers’ assessments have become confirmation.

Pros:

  • Safe for children
  • Visual repeller
  • Good price
  • Perfect height location
  • Verified manufacturer
  • Adjustable width
  • Guarantee system

Cons:

  • Will not fit very narrow or very wide door frames
  • Not suitable for windows
  • Design is only available in one color

3. Cal-Lock Smart Bolt

The overall score is 9.6/10

Specs

9.5/10



Customer Support

10.0/10



Payment Issues

10.0/10



Usability

9.5/10



Credibility

9.0/10



Starting Price 

$27.55


  • Best For Concealment

DIY Setup

YES

Trial Version

30 days

The lock mechanism can withstand up to 1000 pounds, which is an impressive figure. The anti-lift design will reduce potential burglary attempts. Plus, the lock is safe for children and has passed all strength tests. The lock’s discreet and elegant design makes it an excellent choice for lovers of simplicity and minimalism. The lock fits into slots inaccessible to other locks, which is quite essential if your glass sliding doors are not quite a standard design. Unfortunately, even the low profile of the lock does not provide a versatile fit. It may take a set of tools and a little patience to install, but it's worth it.

Another huge plus, the lock comes with a consumer guarantee, which will protect you from the unnecessary hassle of repairing or replacing the lock. Durable door lock handle, perfect fit, phenomenal strength - these are typical qualities when choosing a lock. And if according to experts, this lock is worth considering as an option. The price will pleasantly surprise you, and the purchase guarantee will save you from unexpected expenses.

Pros:

  • Withstands up to 1000 poods
  • Safe for children
  • Justified price
  • Buyer's guarantee
  • Anti-lifting mechanism
  • Comes in packs of three for a better fit
  • Additional plates can be ordered
  • Good customer reviews

Cons:

  • Installation can be tricky
  • Not suitable for wide frames
  • Not a universal fit

4. Toledo Sliding Glass Door Patio Lock

The overall score is 9.3/10

Specs

10.0/10



Customer Support

10.0/10



Payment Issues

9.0/10



Usability

8.5/10



Credibility

9.5/10



Starting Price 

$39.90


BBB Rating A +


  • Best for Tamper-Proof

DIY Setup

YES

Trial Version

NO

Almost always, the locks of this company are in the lists of all kinds of tops. This list is no exception. All concrete construction is of hardened steel. This provides a level of protection that even the most experienced thief cannot bypass. Hidden screws and fasteners are other useful features to make picking the lock more difficult. All of this makes up a little more of a hassle and is well worth it for home and family safety. The installation will not cause significant problems if you have at least some skills in this matter. If you have large windows or custom glass sliding doors, this lock will work with them, too, because its fit is versatile. Regarding the purchase guarantee, here, unfortunately, not everything is so crystal clear.

The safety of the inhabitants of the house is also under control. The locks of this company from the inside can only be opened with a particular set of keys so that teenagers will not get out of the house at night without your knowledge. It gives peace of mind to parents and all residents of the house. A latch will stop disobedient children from the last home. And the stainless steel will not succumb even to saws and bolt cutters. All this makes Toledo locks one of the best sliding door lock options on the market.

Pros:

  • Verified supplier
  • Discreet fasteners and screws
  • Opening only with a set of keys
  • Stainless steel
  • Anti-theft design

Cons:

  • Contains plastic
  • Installation is complex enough
  • The return policy is unclear

5. OKEFAN Baby Safety

Total Score 9.2/10

Specs

9.0/10



Customer Support

8.5/10



Payment Issues

10.0/10



Usability

9.0/10



Credibility

9.5/10



Starting Price 

$13.99


  • Best For Babies

DIY Setup

YES

Trial Version

NO

If you have met a crawling baby at least once in your life, you probably know that it is complicated to protect them from many things. This company’s locks are perfect for families with small children because their locks are safe for children. Of course, the beautiful view of the street from the sliding door can seem very tempting for a child, which is why parents could easily open a lock, but not by a child. That is both crucial points: you are comfortable, and your child is safe. This company has long established itself as a manufacturer of safety for children, and customer reviews and expert opinions indicate that this is not only the best lock for parents but also just one of the suitable locks for glass sliding doors.

Locks from OKEFAN are a peelable and adhesive structure. By pressing two buttons, the mechanism is fixed and opened. This lock is strong enough to keep your child safe, but not strong enough to prevent burglars and burglars with a high guarantee.


6. Supply Guru Keyed Lock

The overall score is 9.1/10

Specs

9.5/10



Customer Support

7.5/10



Payment Issues

9.0/10



Usability

10.0/10



Credibility

10.0/10


Starting Price 

$20.50


  • Best For Outdoors

DIY Setup

YES

Trial Version

NO

Supply Guru's product listing has various ways, including glass sweet door locks, which we'll take a closer look at today. The design of this lock is installed over barns, terraces, patios, and service doors. There is also a useful feature for supporters of the maximum security level, blocking and opening the lock by turning the key 180 degrees. Locks of this type are not only difficult to break, but their very appearance and location from the side of your glass slide doors also let criminals understand that the house is reliably protected.

It is best to install it higher so that it does not interfere with the slide. Although the lock is relatively small, it can make sliding difficult. The lock is available in two colors: black and steel, perfect for a discreet design, as it does not attract too much attention. Opening and closing with a key are among the essential home security criteria, but it also has a downside. If several people use the lock, difficulties may arise. The main thing is to choose a home security system that is convenient for you.

Pros:

  • Suitable for doors and windows
  • Available in two colors
  • Requires a 180-degree turn to open
  • Works inside and out
  • Elegant design
  • Visible on doors, but doesn't get too much attention
  • Opened and closed with a key

Cons:

  • Loss of the key makes it impossible to open the lock
  • Unclear refund system
  • Not rated by BBB

7. Lion Lock

The overall score is 9.0/10

Specs

10.0/10



Customer Support

9.0/10



Payment Issues

8.0/10



Usability

10.0/10



Credibility

8.5/10



Starting Price 

$15


  • Best For Renters

DIY Setup

YES

Trial Version

NO

One of the best locks, especially in terms of installation, which any person can handle correctly. All fasteners and accessories are in the pack, so you don't need any additional purchases. To install, you only need to screw in two small screws. That is why locks from this company are ideal options for those who rent their home. You will need a minimum of investment to install this lock and ensure your safety without damaging the landlord's property. The lock is among Amazon’s tops, and you can find thousands of positive reviews on the net.

Installation is as simple as possible: you need to insert the lock into the frame, the rubber base will fix it, and then screw in two screws. Done! Keep in mind that the lock may not be enough tap for rooms such as patios or balconies, where people continuously walk back and forth.

Pros:

  • Suitable for windows and levers
  • Affordable price
  • Found in many stores
  • Easy installation
  • Fixing the rubber base
  • No tools required
  • Easy to use

Cons:

  • Not ideal for large and heavy door frames
  • Easy to open from the inside
  • No good for heavy traffic

Comparison table (price and features)


Total Score

Pricing

BBB Rating

DIY Instal

Trial Period

Warranty

Camera

Concealed Hardware

Keys

Money-Back

Tamper Resistant

Works on Windows

Defender

9.7

$12.99

A

YES

30 Days

1 Year

NO

YES

NO

30 Days

YES

YES

Ideal

9.6

$21.99

A+

YES

30 Days

1 year

NO

NO

NO

30 Days

YES

NO

Cal-lock

9.5

$28.99

-

YES

30 Days

-

NO

YES

NO

30 Days

YES

YES

Toledo

9.4

$35.95

A+

YES

NO

Lifetime

NO

YES

YES

-

YES

YES

OKEFAN

9.3

$12.99

-

YES

NO

-

NO

YES

NO

-

YES

YES

Supply Guru

9.3

$19.99

-

YES

NO

-

NO

NO

YES

-

YES

YES

Lion

9.2

$14.88

-

YES

NO

-

NO

NO

NO

-

NO

YES

Pros & Cons of Sliding Glass Door Locks

Buying a good lock for glass sliding doors is an important decision that you should approach responsibly because the safety of your family and property is at stake. We invite you to read the Pros and Cons list, which, we hope, will help you decide and make this critical decision.

Pros:

  • Safe for children

    Sliding doors may seem like great fun to babies, but parents are not into play when it comes to their children’s safety. That is why most locks are made safe for children.

  • Ease of use

    You don't even need additional hardware to install a lock on your sliding door in most cases. The ease of use is also a considerable advantage. Sliding doors are often in walk-through areas such as balconies and patios, so they open frequently. Therefore, the lock device is convenient and straightforward, so that you do not have to waste extra time.

  • Good price

    We understand that many are ready to fork out for the family’s safety, but not everyone has this opportunity. Locks for sliding doors are presented in different price categories, but most often, their price is justified and not too high.

  • Adds calmness and confidence

    Even in 2020, the risk of burglary and penetration remains high, and homeowners are always worried about their property’s safety and their family’s safety. A sliding door lock is inexpensive, and it would seem a simple thing that can save you a lot of worries.

  • Scares off-street robbers

    Usually, locks on sliding doors are installed in the middle of the door frame to immediately let burglars know that the house is under reliable protection. Statistics show that burglars are less likely to try to break into homes with noticeable locks

  • High-tech solution

    The market of locks for glass sliding doors is growing and developing rapidly. Today locks of this type can withstand loads of up to 1000 pounds. And such additional innovations as a spring-loaded mechanism and an anti-lifting system make such locks almost impenetrable.

Cons:

  • Can slide off the track

    Unfortunately, this is a fairly common problem caused by improper use of this type of door. If this happens, it is not only an intractable problem, but it also puts security at risk, which is the worst.

  • The keyless mechanism is not always better

    Locks on glass sliding doors are rarely made with keys. Such a lock is much easier to break, especially if the criminal already knows how such locks are made.

  • Noticeable parts and pieces

    The lock does not always fit into the house’s interior or exterior, so locks are usually chosen with hidden mechanisms. On the other hand, many brands have different design variations, so you can always choose something to suit your taste.

  • Cheap materials

    Basically, in the production of locks for sliding doors, plastic is used, and at best, stainless steel. Locks made of cheap materials are significantly inferior in strength and reliability. What's the point in a lock if it can't protect you?

Ways to Protect Your Sliding Door

Before buying a lock for your glass sliding doors, in addition to the pros and cons, you should also familiarize yourself with additional measures to protect your property. Here are five of the most affordable and versatile ways to keep your home safe.

1. Reinforcing film

Beautiful glass doors are not only an exciting design solution but also a good bait for intruders. It is not difficult to break the standard glass with a stone and get inside if you have ordinary glass installed. The screen protector can make the glass shatterproof, which will keep you as safe as possible. It's easy and inexpensive. You can do it yourself.

2. Use traditional methods

Over the years, a technique proven is the insertion of a metal or wood rod into the doors’ track. Such a simple mechanism can save you no worse than any lock, but keep in mind that this is not always convenient, especially if there are small children in the house or the door is often used.

3. Install contact sensors

Such a simple and affordable device as contact sensors can significantly increase safety in the house. They can be placed in any part of the door frame. When an intruder tries to get inside, a loud siren will sound. It is also possible to purchase sensors that can call emergency services if hacking does occur.

4. Use a bolt

A glass door bolt is a reliable way to prevent unwanted entry into the house. It will be impossible to get inside since the entire door mechanism will be blocked. Again, this is not the most convenient option if the door is frequently used.

5. Locking system

Remember that standard glass sliding doors are not equipped with locks and locking systems. That is why you should make sure that your door cannot be opened by anyone passing by. Consider all the options and choose the one that suits you best.

FAQs

How Do You Fix a Sliding Glass Door Lock?

It all depends on your equipment, skills, and equipment. If the breakage cannot be repaired, then you will have to replace the lock entirely. But first, we recommend disassembling the old lock and finding out what went wrong. Most often, breakdowns occur due to not entirely correct installation and operation. Remove the lock, adjust the fit so that you can use it comfortably. If that doesn't help, it's time to look for a new replacement lock. It will be easy to find it if you have read our selection.

What is the Best Lock For a Sliding Glass Door?

This depends on your preference and what purpose the lock on your glass sliding doors will be used for. You can install a bolt that the residents of the house can open and close from the inside. You can also consider options that open with a key. It is a more reliable type of locks. And many are looking for locks solely so that small children cannot get out into the street.

How Do I Protect My Sliding Glass Door From Burglars?

Despite their beauty, glass sliding doors are often the cause of robbery because all your property is perfectly visible through them. First, install a lock that suits your door type. We also recommend sticking a protective film to prevent burglars from breaking the glass. Or you can install motion sensors in case intruders try to break into your home.

Is it Easy to Break Into a Sliding Glass Door?

While getting into your home through a glass sliding door is relatively easy, while it can take some effort. Today, there are many locks for this type of door, which significantly complicates robbers’ tasks. Consider also protecting the glass with a unique film and installing motion sensors.

Bottom Line

So finding the right lock for glass sliding doors may seem like a daunting task, but we hope our list will help you with that. While giving you a view of the garden, glass doors provide the robbers with a view of your property. What's more, your family's safety is at stake. Remember that it is crucial to start not from the product’s cost but its quality in safety matters. Choose the best option for yourself, considering such nuances as the window frame’s width, design, reliability, durability, and installation method. Sometimes, installation requires additional tools, but it is more often a matter of ten minutes and one screwdriver. If a child eats in your home, keep in mind that the lock must be child-safe.


About the author 

Debra Broxton

Debra is highly-competent, scrupulous, and hard-working. As a journalist, Jane relies both on the rich experience and deep researching. When working on new articles and reviews, she strives to scrutinize topics thoroughly and provide readers with all the crucial facts.