Best Window Security Locks To Keep Your Home Protected

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Most people out there make sure to lock their front and back doors at night or when they are not at home to ensure that no intruder enters. However, studies have shown that burglars often get inside through a window, which is why it is advised to get a security lock for your windows as well.

This way, you can further safe-keep your property and yourself at all times, lowering the possibility of a burglary happening to you.

With that being said, window locks are actually a really simple mechanism compared to other home security measures.

But that’s not to say that there are not some that are just better than others.

Furthermore, the market is filled with all kinds of different models, which is why it can be difficult to determine which one window lock is the perfect one for your home.

This is why this article is here to help you out, pointing out all the basic factors you need to take into consideration before purchasing a security lock for your particular situation.

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Not only that but we have also compiled a list of some of the best quality locks out there, taking the guesswork completely out of the process of making your home safer for you and your loved ones.

Of course, you should also consider installing an alarm, cameras and even motion sensors for some extra peace of mind.

After all, while window locks are really effective and also subtle, not making your entire place look like a prison, many homeowners still forget to close the windows when they leave or during the night, situations where the locks are rendered useless.

So always remember to check your doors and windows if you don’t plan on installing a complete security system.

Besides, window locks, especially on the second floor, can double up as some extra safety if you have young children who could be falling the second you turn around from them.

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For extra reinforcement, add metal or sash locks to those windows that have plastic locks already.

This is actually something to keep in mind when selecting the ideal lock – always avoid buying locks made of plastic and instead, search for locks made of aluminum or steel.

Not only are they stronger to attempts of forced entry, but they are also more durable.

Window security locks come in many shapes and sizes and have different features and systems, which is why the following list features a variety of models so that you can learn more about the available options on the market and make an educated purchase.

Of course, the main goal is that you end up getting exactly what you need and start feeling safe in your own home.

Defender Security U 9819 Sliding Window Security Lock


The Defender Security U 9819 Sliding Window Security Lock is easy to install and really efficient in keeping you and your family safe.

In fact, it looks like it’s one of the best rated models out there so you can rest assured it’s going to do its job perfectly!

It is made of high quality aluminum and, as mentioned before, installing it is a breeze – all you have to do is just screw the tool onto your window’s track.

The mechanism is really simple but it is sturdy and durable and once attached to the window’s slide track, it will keep it closes until unscrewed.

With that being said, keep in mind that it only fir for those windows with a slim track and could actually be a little too small for thicker window tracks.

Prime-Line F2646 Sash Keyed Lock


If you want to be safe from burglars but also keep your kids safe while inside the house, this lock doubles as childproofing due to the fact that it unlocks with a key.

All you have to do to keep your young ones from opening the windows and falling down is to hide the key from them, if they are even old enough to know how to use it!

This lock is really durable and strong, made from heavy-duty zinc diecast.

As for the installation process, you need an electric drill to make the pilot holes and drill the screws in.

However, it is also possible that your old lock could line up with this one so you should check if the holes match first after removing the original lock.

If they do, all you need to do is screw in the screws and check once again if everything fits properly.

This is one of the safest window locks out there, mainly because it’s screwed very deeply into the frame but also because it has a key system.

Maxdot Adjustable Sliding Window Locks


The Maxdot Adjustable Sliding Window Lock is perfect if you have sliding windows or even doors as it’s specifically designed to ensure safety for larger window tracks.

More precisely, it is made for window tracks of at least 1.5 cm in height and 1.6 cm in width.

It has a double open design that increases its ability to keep the window from being forced open.

It is made of high quality aluminum alloy, making it really strong and long-lasting.

You can also use it whether you have horizontal or vertical sliding windows.

The only downside is that this one could be a bit harder to install, thanks to its intricate design.

The U.S. Patrol Sliding Security Bar


If you have vinyl windows and want to lock them into place for some extra security, The U.S. Patrol Sliding Security Bar is just what you might need!

These window stoppers are also adjustable so that, if you wish, you can set it with a little room to be able to partially open it to let some fresh air in.

Not only that but, they also have a great looking design that is bound to fit any kind of décor instead of standing out like a sore thumb.

It is made of iron so you do not have to worry about it not being strong and durable.

As for the installation, all you need to do is place the bar into the window’s frame, adjust it to your liking by widening it partially based on how far you wish the window to be able to open and that’s it!

You can now, just as easily, remove it at any point if you want the window to open it completely.

Burglabar by Rishon Enterprises Inc.


The Burglabar by Rishon Enterprises Inc. is a sort of self-locking hinge that keeps intruders out of your house while also keeping young ones safely in!

It is super easy to install to the point that you don’t need any tools to do it!

Not only that but this security lock is also transparent so that makes it pretty much virtually invisible, not ruining any type of interior décor.

These locks are extremely strong, being able to withstand 300 to 400 pounds of dynamic shear!

They are originally designed for sliding doors but they work really well on vinyl windows too!

There is just one downside and that is that once you stick it into place on the window, it’s impossible to remove it and put it back whenever you want.

So, make sure you get the placement right from the start as you won’t be able to change it after.

It can only stick once and there are no replacement adhesives available on the market.

Prime-Line F 2763 Window Sash Lock


The Prime-Line F 2763 Window Sash Lock is really easy to install and can be used on vinyl windows as well as aluminum ones!

This cam action lock is made from a heavy-duty diecast material which is really strong and safe, ensuring that your window stays in place no matter what.

This cam action lock is very easy to install and can be used on both aluminum and vinyl windows.

If you have bigger windows, it’s recommended that you install two locks for some extra security and a tighter seal that no intruder will be able to pry open.

But if you have smaller windows, one lock is more than sufficient, although for some peace of mind, you can still opt for two, of course.

Furthermore, this lock comes in a number of different colors including bronze, silver and white, so that it matches your interior décor perfectly and blends with the window’s color scheme.

Codace Sliding Window Security Locks


Another great option for your windows if you have young children is Codace Sliding Window Security Locks.

This is because it has a key feature that makes it so that the window remains close until the special key is used.

Furthermore, it is quite easy to install as well since there is no extra hardware needed.

It has two keys for each window lock, making it even safer, and is suitable for sliding windows whether they are horizontal or vertical ones.

It is also made with a really thick and long-lasting aluminum alloy and also features rubber stoppers that tighten the grip on the sliding windows track and allow more friction to take place.

Just keep in mind that this product has a clamping distance between 10mm and 60mm which means that it is not compatible with plastic-framed windows and tracks.

Momentum Brands Sliding Window Locks Set


The Momentum Brans Sliding Window Locks are just ideal in case you are searching for some heavy duty locks for your windows.

They are made of thick aluminum to ensure their durability and strength and the clamping system is simple but efficient.

They use a key mechanism that tightens the clamps on the window track, allowing it to be easily screwed and unscrewed as you wish.

The only con could be the fact that they come in a pack of 12 so if you need less than that, it could be inconvenient to purchase so many.

Lion Locks Aluminum Sliding Door and Window Lock


These locks are great for sliding glass doors, patio doors and sliding windows alike.

Their design ensures security and safety for your entire house and also makes sure that your doors and windows don’t get damaged by the lock mechanism thanks to the fact that they come with an inner vinyl lining.

This lining is able to protect your windows and doors from any scratches but also adds to the clamping grip.

As for the installation process, it is really easy to do since it uses simple double thumbscrews to keep the locks in place.

Boao Adjustable Sliding Window and Door Locks Set


The Boao Adjustable Sliding Window and Door Locks Set has a minimal design and a key control mechanism which makes it super safe for your children as well.

With it, you will be able to lock your windows without the usual bulky build of most locks.

It is made from high-quality, rust-proof, rub-resistant, anti-aging, high temperature resistant and durable aluminum material.

Furthermore, it is compatible with tracks that are more than 0.5cm high less than 0.6 cm thick.

With that being said, it is suitable for most aluminum and plastic framed windows.

Just know that this lock’s design is not compatible with vertical window rails.

MOTTYA Premium Sliding Window Locks Security


The MOTTYA Premium Sliding Window Locks Security has a really simple but efficient security system and is really easy to install as well!

It is made from a strong and durable aluminum alloy and is designed with a single key to screw and unscrew the lock in place.

It is made for window tracks with heights over 1.5 cm and 1.6 cm thick.

Furthermore, this product is not applicable to the middle track so make sure you check your window before purchasing it.

It includes plastic protective gaskets that can really protect your windows from scratches and damage in general.

William Reid
A science writer through and through, William Reid’s first starting working on offline local newspapers. An obsessive fascination with all things science/health blossomed from a hobby into a career. Before hopping over to Optic Flux, William worked as a freelancer for many online tech publications including ScienceWorld, JoyStiq and Digg. William serves as our lead science and health reporter.