Last updated: August 10, 2021

Welcome to our large patio door security test 2021. Here we present all the patio door security devices that we have tested in detail. We have compiled detailed background information for you and also added a summary of customer reviews on the Internet.

In this way, we would like to make your purchase decision easier and help you find the best patio door safety device for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy a patio door safety device.




The most important facts

  • Around 80 percent of all burglaries occur via the patio door. Therefore, you should secure your patio door to prevent burglaries or at least make them more difficult so that the potential burglar gives up carrying out the crime.
  • Burglars use both the locking and the hinge side to pry open the door. That is why it is important to secure both sides sufficiently. For example, by using a bar lock on the locking side and a hinge lock on the hinge side.
  • It is imperative that you ensure proper installation in accordance with the instructions for the respective security device, as even minor installation errors can destroy the effectiveness of the security device.

The Best Patio Door Security: Our Picks

Guide: Questions you should ask yourself before buying a patio door safety device

What is a patio door security system and why should I secure my patio door?

Patio door security refers to mechanical and electronic systems that are used to protect against burglary. You should secure your patio door because burglars specifically choose the weak points of a house to try to break in.

Patio doors are usually a weak point and are therefore often used by burglars as a way to enter other people's private homes. (Source: pixabay.com / ArtisticOperations)

Around 80 percent of all burglaries occur via the balcony or terrace door. This is because the terrace is often located away from the street.

Therefore, you should secure your patio door in particular to prevent burglaries or at least make them more difficult so that the potential burglar gives up carrying out the crime.

There are many ways to secure your patio door. Most of them can be easily retrofitted. A combination of mechanical and electronic anti-burglary devices is particularly useful.

Mechanical burglary systems make it more difficult to break in, as they counteract the burglar's effort with a resistance.

Electronic security systems, on the other hand, cannot prevent a burglary, but only report it. They activate an acoustic alarm and, if necessary, also forward a warning to the police.

You can see how big the difference between unsecured and secured patio doors can be by watching the following video:

How much does a patio door security system cost?

There is a wide price range between the different patio door security devices. Depending on which security device from which manufacturer you choose, the price can differ.

The cost also depends on the resistance class and the desired requirements.

Type Price range
Lockable patio door handle 6€-70€
Bar lock 40€-200€
Hinge side security 20€-40€

A patio door security system does not have to be expensive. You can buy good security systems for a small amount of money. However, more extensive systems can run into the three-digit range.

Online shops are becoming increasingly popular, and not without reason. From the comfort of your own home, you can access the wide range of offers and compare them easily. (Source: pixabay.com / PhotoMIX-Company)

What should I look for when buying a patio door security system?

If you decide to buy a patio door security system, there are a few things you should consider. We have briefly summarised what is important.

Burglars use both the locking side and the hinge side to pry open a door. That is why it is important to secure both sides sufficiently.

You can achieve this by using a bar lock on the locking side and a hinge lock on the hinge side.

It is imperative that you ensure proper installation in accordance with the instructions for the respective security device. Even minor installation errors can destroy the effectiveness of the security device.

In general, we recommend installing one security device per metre of French door. If you have a patio door with a double leaf, you should install one security device per metre for each leaf.

What alternatives are there to patio door security?

Basically, there is no alternative that can completely replace a patio door security system. We therefore advise you to use these alternatives in addition to patio door security in order to protect your home in the best possible way.

Window grilles or roller shutters

Window grilles or roller shutters; window grilles or roller shutters provide additional protection.

Alarm system

Alarm systems use light and sound signals to alert you to a break-in. A burglary cannot always be prevented by this, but the burglar is usually deterred and stops his crime.

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Lighting

Burglars look for windows that are in the dark so that they are not seen when they commit their crime. Sufficient lighting, especially on the patio area, is therefore good protection against burglary.

Surveillance camera

A surveillance camera cannot always prevent a burglary, but burglars can be deterred by appropriate signs pointing out the surveillance camera.

They also help to identify burglars after the crime has been committed.

Decision: What types of patio door security are there and which is the right one for you?

To eliminate the weak points of patio and balcony doors, there are many different options to choose from.

The following additional security devices counteract these weak points:

  • Fuse on the locking side or lock side
  • Fuse on hinge side or hinge side
  • Security film

What are the characteristics of a security system on the locking side and what are its advantages and disadvantages?

There are various security systems that can be installed on the lock side of the patio door. For example, a lockable patio door handle or the so-called bar lock.

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In the upper half of the picture, a bar lock is attached. In the lower half of the picture, a lockable patio door handle can be seen. We would now like to take a closer look at these two options.

Lockable patio door handle

The lockable patio door handle is also called a locking system. This is the simplest conversion of the patio door. It is very easy to install.

Even if a burglar breaks the glass, he cannot open the door through the resulting hole.

With lockable patio door handles, you should make sure that they work in the same way both when the door is closed and when it is tilted. Some lockable window or door handles are also equipped with a child safety lock.

In addition to the classic lockable patio door handles, where the lock cylinder is integrated into the housing of the handle, there are also additional locks that function as combination locks.

Bar lock

The bar lock for patio doors is also attached to the locking side. Two securing points at the upper and lower edge of the window ensure here that the window cannot be opened under pressure loads.

Most bar locks are keyed alike. This means that they work in conjunction with the "normal" door lock. To operate the bar lock, a single locking operation on the existing door lock is therefore sufficient.

Advantages
  • Quick and easy installation without special tools
  • prevents the door from being prised open
  • retrofitting possible
Disadvantages
  • Bar locks somewhat more expensive to buy

What are the advantages and disadvantages of a hinge side or hinge side security device?

A hinge side lock is installed on the hinge side of the patio door. The security is achieved by simply closing the door. With older hinge security devices, the security device must be manually unlocked before opening.

With modern hinge security devices, the function is usually coupled with the engagement, so that it automatically rotates when the door is opened.

Advantages
  • Prevents the door from being levered open
  • retrofitting possible
Disadvantages
  • Somewhat more complex installation
  • manual unlocking on older models

This alternative is suitable for all French doors with turn/tilt fittings and can withstand about 1 ton of pressure. This option is particularly relevant for doors without mushroom head locking.

What distinguishes a security film and what are its advantages and disadvantages?

You can also secure your patio door with a security film or shatter protection film, which is stuck to the inside of the door pane. This is a transparent plastic film that holds the pane together even after it has been damaged by force.

If you decide to buy a safety film for your patio door, you should make sure that the manufacturer complies with the standards of DIN EN 356.

Splinter protection films can be used on all conventional glass surfaces. Almost all safety films are self-adhesive and can be applied to the window surface without much effort.

Advantages
  • Application without much effort
  • No special tools required
  • Cost-effective
Disadvantages
  • Pane still shatters when force is applied
  • Serves only as a supplement to mechanical security devices

Buying criteria: These are the factors you can use to compare and evaluate patio door security devices

In the following, we will show you which aspects you can use to decide between the many possible patio door security devices.

The criteria that you can use to compare the fuses include:

  • Resistance class
  • Patio doors opening inwards or outwards
  • Keyed alike or differently
  • Open/closed position visually identifiable
  • Suitable for double wing windows
  • Alarm function

Now we will go into more detail on the individual purchase criteria.

Resistance class

Depending on the resistance class, a patio door can make burglary considerably more difficult or almost impossible. Depending on the resistance class of your patio door, more or less additional security measures are necessary.

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In new buildings and conversions, you get good burglary protection by installing tested burglar-proof patio doors of at least resistance class RC 2 (N). These patio doors ensure that there are no weak points in the entire construction.

We have prepared a table to give you an overview of the individual resistance classes. The resistance classes have been marked with "RC" for "resistance class" since September 2011.

Resistance class Resistance time Perpetrator type / approach
RC 1 N (new) Only static and dynamic testing, no manual testing Doors of this resistance class hardly protect against the use of lever tools or attempts to break open with physical force. Therefore, they tend to be used only for increased installation (for example, on the upper floor). The class is only designed with standard window glass (without security glazing).
RC 2 N (new) 3 minutes The burglar additionally tries to break open the locked patio door with simple tools such as screwdriver, pliers or wedge. A direct attack on the inserted glazing is not to be expected. The class is only carried out with standard window glass.
RC 2 3 minutes Glazing in accordance with EN 356 is mandatory from this class.
RC 3 5 minutes The perpetrator additionally tries to break open the locked patio door with a second screwdriver and a cow's foot.
RC 4 10 minutes The experienced offender additionally uses sawing tools and percussion tools.
RC 5 15 minutes The experienced offender additionally uses power tools, such as a drill, jigsaw and angle grinder with a max. disc diameter of 125 mm.
RC 6 20 minutes The experienced offender additionally uses powerful power tools, such as a drill, jigsaw and angle grinder with a max. disc diameter of 250 mm.

Inward or outward opening patio doors

When choosing a suitable patio door security device, it is important to consider whether your door opens inwards or outwards. Most security options are suitable for inward opening windows and doors.

If you have a patio door that opens outwards, you should pay particular attention to whether your chosen security unit is also suitable for this.

Keyed alike or keyed differently

Most additional security devices for patio doors are available as "keyed alike" or "keyed differently".

Keyed alike additional locks offer the decisive advantage that several locks can be opened with only one key.

The disadvantage, however, is that there are only a handful of key variants that the burglar could also carry with him. In the event of a break-in by means of a glass handle, he could then open the locks within seconds.

Open/closed position visually recognisable

Depending on the type of security option chosen, the open or closed position of the patio door is often visually recognisable. For example, by means of a red/green indicator.

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Suitable for double door leaves

When deciding on a security mechanism for your patio door, you must consider whether your door has a single or double leaf.

Not all models are suitable for double doors. One option is a bar lock, which can usually be used for double doors. The locking system gives the lock a high resistance to pressure loads and lever attacks from the outside.

Due to the narrow design, bar locks can be used universally, i.e. on almost all inward opening patio doors including most double leaf doors with and without a centre bar.

In general, one lock per leaf and per metre is recommended for a patio door with a double leaf.

Alarm function

With some patio door security devices, it is possible to additionally equip the model with an alarm function. The alarm function with acoustic and/or visual signals alerts the owner or neighbours to the attempted break-in.

Complex burglary protection systems forward the alarm to the control centre of a security company commissioned by the owner.

Modern security systems forward a triggered alarm to the nearest police station so that help is on the spot immediately. (Source: unspalsh.com / Markus Spiske)

This function already reacts during an attempted break-in if the burglar tries to prise open the window or if vibrations are perceived on the window pane. The function then triggers a loud alarm of usually about 110 dBA.

Facts worth knowing about patio door security

How do I install a patio door security system?

The installation of patio door security devices plays a decisive role. It is essential that you ensure proper installation in accordance with the instructions for the respective security device.

Most safety devices are relatively easy to install if you follow the manufacturer's instructions exactly.

To give you a better idea, we have selected two short videos on the subject of installing a patio door safety device.

How can I retrofit a patio door security system?

Both security devices on the lock side of the patio door, such as lockable patio door handles or bar locks, and security devices on the hinge side can be retrofitted relatively easily to any patio door.

Of course, you can also equip your patio door with a security film to make it difficult for burglars.

You can secure your patio door particularly effectively by using a combination of mechanical and electronic burglary protection systems.

The main criteria for retrofit security systems include:

  • VDS & DIN tested
  • High internal security class
  • KfW subsidisable
  • Additional protection against the three most common burglary methods
  • Universally applicable (left-opening, right-opening, single or double-leaf)

Image source: 123rf.com / Sorokopud A.

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