Are Aluminium Bifold Doors Secure?

Security is one of the most common concerns homeowners have when considering aluminium bifold doors. With large glass panels and wide openings, it’s natural to ask:
are aluminium bifold doors actually secure?

The short answer is yes — when they’re properly designed and specified.
In this guide, we’ll explain how aluminium bifold doors achieve their security, what to look for, and where cheaper systems can fall short.

Why Security Is a Common Concern with Bifold Doors

Bifold doors:

• cover large openings

• often include multiple panels

• feature extensive glazing

This can make some people worry they’re easier to break into than traditional doors. In reality, modern aluminium bifold doors are designed with security firmly in mind.

The Strength of Aluminium Frames

Aluminium is inherently:

• strong

• rigid

• resistant to warping or twisting

Compared to older materials, aluminium frames:

• maintain tight tolerances over time

• resist forced entry

• provide a solid base for advanced locking systems

This structural strength is a major reason aluminium bifold doors are widely used in high-end residential and commercial projects.

Multi-Point Locking Systems

Quality aluminium bifold doors use multi-point locking, meaning the door locks at multiple points along the frame rather than just one.

These systems typically include:

• multiple locking hooks or bolts

• engagement along the full height of the door

• secure locking on the main traffic door

This makes it significantly harder for intruders to force the door open.

Glazing Plays a Big Role in Security

The glass in a bifold door is just as important as the frame.

Secure systems use:

• toughened safety glass

• optional laminated glass for added protection

• glazing that meets UK safety standards

Laminated glass, in particular, is designed to stay intact even if broken, making it far more resistant to intrusion.

PAS 24 & Security Testing Explained

Many high-quality aluminium bifold doors are tested to PAS 24, a recognised UK security standard.

PAS 24 testing assesses:

• resistance to forced entry

• strength of locks and hardware

• overall door performance under attack

Choosing a PAS 24-tested system provides peace of mind that the door has been independently assessed for security.

Hardware Quality Matters More Than You Think

Locks, hinges, rollers, and handles all contribute to security.

Premium bifold systems use:

• high-grade locking cylinders

• durable hardware tested for repeated use

• components designed to resist manipulation

Cheaper doors may cut costs here, which can compromise long-term security and reliability.

Installation Is Just as Important as the Door

Even the most secure door can underperform if it’s not installed correctly.

Proper installation ensures:

• correct alignment

• full lock engagement

• tight seals

• no weak points around the frame

This is why professional installation and accurate surveying are essential.

Are Aluminium Bifold Doors More Secure Than PVC?

When well specified, aluminium bifold doors are often more secure than PVC alternatives because:

• aluminium frames are stronger

• tolerances are tighter

• hardware is typically higher grade

• large panels are better supported

As always, security comes down to system quality, not just material choice.

Common Security Myths About Bifold Doors

“They’re easy to force open”
Not true with modern multi-point locking systems.

“The glass makes them weak”
High-spec safety or laminated glass is extremely tough.

“More panels mean less security”
Quality systems are engineered so panel count doesn’t reduce security.

Our Approach at Home Build Doors

At Home Build Doors, we:

• supply proven aluminium bifold door systems

• specify secure glazing as standard

• use robust hardware and locking systems

• explain security features clearly, not with vague claims

We don’t believe in compromising on security to reduce costs.

Final Thoughts

Aluminium bifold doors are highly secure when:

• the system is well engineered

• quality hardware is used

• appropriate glazing is specified

• installation is done correctly

If security is a priority — and it should be — choosing the right system makes all the difference.

If you’d like advice on secure aluminium bifold door options for your home, the team at Home Build Doors is always happy to help.