The Ultimate Guide To Bifold Door Security

Bifold doors offer little privacy so it's essential to have safety precautions in place, here are our top tips to keep your Bifold Doors safe.

Bi-Fold Door Security

Thieves perceive any sort of door within a property to be a potential access point. Securing your doors is one of the most crucial things you can do to keep your home, belongings, and loved ones safe. Using our home security checklist, check the door safety standards you already have in place.



Types of Bi-Fold Patio Doors

Wooden Bi-Fold Doors

Bifold doors made from wood combine beautiful natural materials with functionality and longevity. Because of their excellent sound absorption and low cost, wooden bifold doors are commonly used in interior environments. When utilising the doors outside, extra caution should be taken as wood is more likely to be affected by the conditions outside. Wooden bi-folding doors can be built from a multitude of woods, but hardwoods like oak are the most common due to their durability, lifespan, and ability to insulate. Wooden bifold doors are more susceptible to rotting and warping which can have a significant effect on your secure the locks are. It is likely to locks will wear down over time making these types of doors less secure.


Benefits of Wooden Bi-Fold Doors

  • Natural insulation: bifold doors use air pockets within the structure of the wood to create a natural barrier between the heat and cold.
  • Versatile customization: an external wooden door can be varnished, painted, and stained to suit a modern or more traditional home.
  • Sound absorption: wood absorbs sounds, so it can create quieter rooms and can help dull the noise from outside.
  • Environmentally Friendly: the process of creating these types of doors requires fewer fossil fuels than other materials.

Aluminium Bifold Doors

Aluminium has become an increasingly popular material to use for external bifold doors. The ability to offer more range of light and excellent durability gives a more stylish, contemporary look to your home. Aluminium bifolds are very strong, meaning their frames holding the glass can be very thin and still provide extreme durability and strength.


Benefits of Aluminium Bifold Doors

  • Low maintenance
  • Excellent lifespan (45 years)
  • Modern style
  • Slim sightlines
  • Sustainable material (can be recycled)

UPVC Bifold Doors

Because of its flexibility, uPVC (unplasticized polyvinyl chloride) is a popular material for bifold doors. It’s a good insulator, retaining heat and the cold outside. It will look great in any home, whether traditional or modern. UPVC doors are cheap in comparison to aluminium and therefore are very common choice for homeowner looking for a new set of bifold doors. UPVC doors are not as strong as aluminium bifolds and therefore have thicker frames to support the glass in order to keep your house secure.


Benefits of UPVC Bifold Doors

  • Increased light, ability to maximise the natural flow of light
  • Great insulation
  • Stylish and make your home look more spacious
  • Highly secure means increased safety.


Composite Bifold Doors

Composite bifold doors combine the natural insulation of wood with the strength and durability of aluminium. The aluminium is on the outside to protect it from the outdoors, while the wood is on the inside to match various furnishings.


Benefits of Composite Bifold Doors

  • Excellent thermal efficiency gives some of the best U-values.
  • Having an aluminium casing on the exterior means there is less maintenance needed.
  • Combines both materials getting the best properties out of both.

Key Points:

  • UPVC bifold doors are the most cost-effective and simple to maintain.
  • Composite bifold doors are the safest, but they are also the most expensive.
  • Wooden bifold doors are attractive, but they are difficult to maintain.
  • Aluminium bifold doors are less frequent in homes, although they can accommodate a lot of glass.

Bi-Fold Doors Security Features

Bi-fold doors, like most doors, have a certain amount of security built into them to help keep your home secure. Most bi-fold doors will have:


A Multi Point Locking System

This is a door that locks from multiple places, typically the top, middle, and bottom. It contains three deadbolt locks instead of one, which adds to the security by allowing it to withstand being kicked down or any other attack. To provide maximum security, bi-folds are installed with this system. In order to smash the door down, a criminal would have to remove a gear from the bottom track, which is built of hardened steel.

This helps with your home security as the more deadbolts per door increases the strength and durability of your door dramatically. With bifold doors consisting of several doors it is essential to have multiple lock points for the best security.



Toughened Glass

Toughened glass is five times stronger than standard glass, so the glass on bifold doors can be deceivingly strong.  Not only does it provide a higher degree of resistance, but it also contributes to the thermal efficiency of your home.

A criminal may consider bifold doors as an inviting entrance point.  Toughened glass (safety glass) is used to minimise the danger of harm, as it can sustain greater impact pressures on the surface. This type of glass is great for door security as it is substantially more difficult to break.



What Locks are on a Bi-Fold Door?

The right locks are a really important for bi-fold door security, so knowing what locks you might have will help to ensure that you take the proper precautions. The most commons locks on bi-fold doors are:


Euro Cylinder Lock

How to Tell if you Have a Euro Cylinder fitted?

Euro cylinders are fitted on nearly every UPVC door, so if you have a UPVC door, there’s a good chance you already have one. If you’re still not sure, the barrel on a euro lock normally pulls away from the door, needing you to turn the door handle up to lock it. Euro locks are less likely to be installed on wooden doors, but they can still be simply installed by a professional locksmith service. It is well worth upgrading to for the added security it provides for your property.



Deadbolts can be classified as Single Cylinder, Double Cylinder, or Lockable Thumbturns. The thumbturn on a single-cylinder lock is located within the building, while the key cylinder is located outside. The key cylinder is located on both the exterior and interior of double-cylinder deadbolts. The thumbturn is located inside the lockable thumbturn, which may be locked with a key.


Drop Bolts

With the use of unique pins, the lock’s body and strike plate connect in the form of a door hinge. It is exceedingly difficult to separate the lock once it is closed because it essentially combines into one piece. It is usually used as a backup lock rather than the primary lock on a door.


How can I make my Bi-fold doors more secure?

Aside from the obvious visual advantages that bi-fold doors can provide for your home, there are a number of security factors you should consider. Here are several components that can aid in the security of your bifold doors:


Install Anti-Snap Locks

Anti-snap locks are the best lock to upgrade to. The most typical approach for a burglar to force entry into a home is by lock snapping, which allows them to gain access in a matter of seconds. Anti-snap locks are designed to snap on a specific line (anti-snap line) to preserve the internal locking mechanism.

The best anti snap lock of 2022 is the TS007 3-Star Cylinder – the highest level of certification currently available, making them one of the anti-snap locks.


Choose Anti-Pick Cylinders

Cylinder locks are generally seen on uPVC doors and are usually used in unison with a mechanism. A euro cylinder and a thumb turn cylinder are two different types of cylinder locks. Here’s how to replace a cylinder in an uPVC door lock.

Because of technological advancements, several bifold door providers now offer anti-pick cylinders as a free option if requested. A burglar may drill out the cylinder in a lock (where your key goes in) fairly easily without them. The use of anti-pick and drill cylinders means that it has been designed in a way that makes it near impossible to pick. This is necessary to improve the security of your bifold doors, particularly if they are external and are accessible from outside. These are essentials to your home’s security, as anti-pick cylinders make your bifold door virtually impossible to pick.


Choose Laminated Glass

Using heat and pressure, a layer of plastic is formed between two thin glass panels to create laminated glass. Even if the glass is shattered, the plastic binds the two panes together and holds the glass in place. Compared to standard toughened glass, that is technically stronger, laminated glass is less likely to shatter meaning the security of your home could be better protected. This type of glass will be most efficient to help deter thieves as they can cause physical damage to glass of the bifold but will find it very difficult to pass through.


Check for Internal Beading

You should ensure that the frames of bifold doors are internally beaded, where beading is located inside the actual frame, as this holds the glass in place and when internal it cannot be accessed from the outside. This is seen as the standard requirement in the production and fitment of bifold doors, but if a door were beaded externally, it can give criminals easy access as they could attempt to remove the glass without making too much noise.


Install a Strong Handle

When it comes to the security of your bifold doors, having a high-quality door handle is more crucial than you might believe. A burglar can easily exploit a weak handle, and if they find one, it can be a very straightforward access point for them. A good door handle should include the following features:


  • A backplate with rounded corners to prevent criminals from removing the handle with clamps
  • A durable cast body secured with reinforced bolts
  • A rotating cylinder shield that prevents lock drilling
  • A cylinder guard to protect the lock by encasing it and stopping it from snapping.


How can I make my Bi-fold doors even safer?

Install Blinds and Shutters

Installing blinds, shutters, or curtains is a simple extra precaution you may take. From the outside, this entirely eliminates any view into your home, making it a less appealing target for thieves. They’re ideal for while you’re sleeping, away for the day, or on holiday. This isn’t just for concealing valuables inside your home; it can also be used to diminish the annoying glare on your TV!


Consider a Bifold Door Alarm

Still, one of the best ways to keep your house protected is by using door alarms. Technology becoming more advanced means alarm systems can now be small and discreet. Installing an alarm system on your bifold door to automatically go off usually deters any thief instantly. Newer alarm systems allow you to connect to your phone or device to be able to track any activity happening when you are out and about. High-end systems also have the ability to send an emergency call directly to the police and allow a quick response to prevent any potential danger.


Install Security Cameras

Using security cameras is an excellent way to catch anyone examining your bifold doors. Utilizing security cameras is a clear indication to a robber that they have chosen the wrong property. Therefore, it’s a great way to catch criminals if they try to break in as well as discourage them from doing so. Bifolds have a lot of glass, which gives them a clear image into your home and makes it possible for thieves to see a lot inside. Therefore, you should take every precaution to protect your belongings if they are in your line of sight. Installing a camera with a broad field of view is advised to catch any shady activity.


Child-Proof Gaskets

Child safety locks are crucial nowadays with the amount of innovative bi-fold and sliding doors on the market. Young children are always escaping their parents’ attention and are constantly at risk of trapping their fingers in the door. Many bi-fold doors are manufactured with this concern in mind, with a soft cushioning known as a “finger safe gasket” to make catching their fingers between the doors less painful and prevent serious injury.


Even More Security

In addition to the information provided above, if you are concerned about home security and want to take additional precautions, we recommend that you go through our other home security guidelines for more information.