patlock security for straight handle French Doors

Patlock Review

Security Score 94%
Ease of Use 83%
Price-Quality Ratio 85%

We provide an extensive review of the Patlock Handle Security Bar for French doors, Patio and Conservatory doors. Our editor gave it a really good score overall. Read more about it below.

Editor's Overall Rating?


Why This Patio Handle Security Beats The Rest

It just works!

It does exactly what it’s supposed to, is easy to use and beats all the other products that are available in the patio door, locksmith and security section. There’s really nothing else to say.

Oh, wait a minute, there is one more thing to add: It is also police approved. It has the distinction of being the only patio door handle lock of receiving the Secured by Design commendation by the Police Force and Crime Prevention units.

secured by design mark

How Does The PatLock Work?

patlock on door handles from the inside

This product was introduced to combat the tactic known as lock snapping described above. This means that even if the cylinder locks are broken, the product will make sure the handles cannot be adjusted from the outside.

It works by disabling the door handles being pushed down. This ensures the doors remaining in a fixed, static position i.e. locked. The handles on the outside won’t budge, even with applied pressure. This means that the person trying to operate the handles from outside won’t even have the option of pushing them down.

No matter what force is used, the handles will not come down.

None of the levels or bolts will move as the handle is locked into place by the Patlock. Even if the cylinder lock has been snapped, the only way to manoeuver the handles will be to open it from the inside.

And how do you install it? You simply slip on the item over the current door handles i.e. it can be retrofitted on.


History of the PatLock

It was originally introduced in 2016 after being featured in Dragon’s Den.

Since then, this product has been in high demand in both the USA, UK and Germany. It is a patented product and was designed by the inventor, Craig Knott, after he experienced some break-ins of his property whilst on holiday.

We have used this across some of our own properties and we offer an in-depth review so you can work out if this is something could improve your home security.

Television Advert

An advert was released in 2016 which featured the retired boxer, Frank Bruno. It can be watched below.

A Burglar Looks For The Weakest Entry Point

When a burglar is looking to break into a home, they naturally go for the weakest entry points. That is to say, they will look at areas where they can get in with minimum disruption.

This tend to be to the rear of the property as this area, in contrast to the front, is usually poorly lit and has fewer observers or people passing by.

This is why optimising your back door security is paramount to successfully deterring any break-ins.

It has to be said, one of the easiest entry points to break into the rear of the property is through patio or french doors. The locking mechanisms for these are barrell or cylinder locks and as the video shows below, it can be easily drilled into or as it is known in the locksmith industry, ‘lock snapping’.

So what is the conclusion?

The best answer, in our opinion, is to add a layer of security to the handles and we have a page where we review the best patio handle security bars. On this page, we reviewed what we believe is the best of the lot: The Patlock.

Remember though, this product is designed to be used as a supplementary security layer for French Doors. It isn’t the all-in-one solution instead of existing locks. You can read more about door security here.

Tamper Resistant

Made with a tamper resistant spindles and weighing less than 1kg.


Made from stainless steel


In case of emergency, the handles can be released instantaneously.


"This isn't perfect but does give me some peace of mind re the security. I live in the US so my french doors, like most in this country, have one working knob. (In the UK, it seems like both doors typically have working knobs. The Patlock was designed and made in the UK.)"
Amazon User
"My mom was super worried about someone trying to break in through her french doors. Installed these, super easy, very easily-seen deterrent, easy to put on and take off from the inside, but hard to take off from the outside. Highly recommend!"
AJ Merrifield
Amazon Buyer