16 July, 2026

How Are Doors Kept Secure? | A Homeowner’s Guide

When you start planning a home improvement project, understanding modern door security features is one of the most valuable steps you can take. Your front and rear doors are the primary access points to your home. Because of this, they are the first line of defense against potential intruders.

To help you make an informed decision, we have put together this comprehensive guide explaining the essential door security features you should look for when upgrading your home.

Security Standards

Before diving into specific door security features, it is helpful to understand the legal standards in the UK.

In 2015, minimum security standards were introduced under Approved Document Q (ADQ) of the Building Regulations. This regulation requires all easily accessible doorsets to meet strict security performance standards (such as PAS24 or Secured by Design).

However, there is a major catch: Approved Document Q only applies to new-build homes or properties created through a change of use. It does not legally apply to simple replacement doors in existing homes.

Because of this legal loophole, it is still entirely possible to buy cheap replacement doors on the market that lack modern, robust door security features.

At Allgood Construction, our background is deeply rooted in structural building, particularly first and second-storey home extensions. Because we approach installations with a builder’s mindset, every door system we supply is specified to meet full building regulations standards – including Approved Document Q. We don’t believe in cutting corners when it comes to your safety.

Composite Doors

1. Locking Systems

The most fundamental part of your door’s safety is the lock. The most critical door security features are housed within the locking mechanism itself.

Multi-Point Locks

Older doors rely on a single latch or deadbolt. If forced, all the pressure is concentrated on that one tiny piece of metal.

Modern uPVC and composite doors utilise multi-point locking systems. When you turn the key, multiple bolts, hooks, and rollers engage with the steel-reinforced outer frame at several points along the height of the door. This design distributes physical force evenly across the entire frame, making it incredibly difficult to pry or kick open.

Anti-Snap Cylinders

The weakest point of any older door is often the lock cylinder. Traditional cylinders were vulnerable to a burglary method called lock snapping. Because older lock barrels protruded slightly from the handle, intruders could grip the exposed metal with basic tools, violently snap the cylinder in half, and manually manipulate the internal mechanism to open the door.

To combat this, look for doors with dedicated anti-snap door security features. These modern locks feature:

  • Sacrificial Cut Lines: Engineered weak points that break off under attack, leaving the secure inner core of the lock fully functional and locked.
  • Hardened Steel Cores: Highly resistant to drilling, pulling, and snapping.

At Allgood Construction, all of our premium Composite Doors are fitted with the legendary Ultion 3-Star ALPS lock cylinder. This lock is widely recognised as one of the most secure systems on the UK market, featuring a hidden lock mechanism that activates automatically if an attack is detected.

2. Door Frames

The strength of the frame is just as important as the other door security features we’ve mentioned. Physical force applied to a door transfers directly from the door leaf, through the locking points, and into the frame.

In low-quality installations, this force is concentrated on a small area around the metal strike plate. If the frame is made of weak, unreinforced material, it will easily splinter or shatter under pressure.

Modern doors are engineered as a complete, integrated “doorset.” This means the door leaf, frame, locks, and hinges are manufactured to work together as a single, cohesive unit. High-quality door security features in modern frames include:

  • Internal Steel or Aluminium Reinforcing: Hidden metal chambers inside uPVC and composite frames that dramatically increase rigidity.
  • Heavy-Duty Hinges: Anti-lift hinges that prevent intruders from physically lifting the door leaf off its tracks from the outside.

Whether you choose our stylish uPVC Doors or opt for a modern rear patio upgrade, our structurally reinforced frames distribute force evenly, neutralising physical attacks.

Composite Doors

3. Glazing

Glazed sections look beautiful and flood your hallway or living room with natural light, but many homeowners worry they represent a weak link. However, modern glazing technology incorporates highly sophisticated door security features to prevent glass from being shattered.

Under current Building Regulations, all glass panels in doors must consist of toughened safety glass. Toughened glass is up to five times stronger than standard glass. If it does break, it crumbles into small, blunt pieces rather than sharp, dangerous shards.

While looking at these glass-related door security features, you can also opt for laminated glass. Laminated glass features a tough plastic interlayer sandwiched between two glass sheets. Even if the glass is heavily struck with a hammer, the shards remain firmly bonded to the plastic interlayer, holding the window pane intact and keeping the intruder out.

This high-security glazing is a standard feature across our entire patio range, including our slimline Aluminium Bifold Doors and smooth-gliding Aluminium Sliding Doors, which meet both PAS24 and Secured by Design standards.

4. Smart Locks

As home technology evolves, smart home connectivity has become one of the most exciting new door security features available to homeowners.

These smart door security features integrate directly with your smartphone. When using modern composite options with systems like the Yale SensCheck Smart Lock, you can:

  • Notifications: Receive real-time notifications on your phone if your door is opened or tampered with.
  • Remote Status: Check the status of your locks remotely, giving you complete peace of mind when you are away from home.

French door

Choose Allgood Construction for Secure Doors

True home safety relies on a combination of different door security features. High-quality door security features – including multi-point locks, anti-snap cylinders, steel-reinforced frames, and safety glazing – must work together seamlessly to defend your home.

Before committing to a new entrance, Patio Doors, or French Door installation, always ensure the product features recognised security certifications such as PAS24 or Secured by Design.

If you’re ready to secure your home with premium, builder-grade doors and never compromise on these essential door security features, the family-run team at Allgood Construction is here to help. Contact us today to discuss your next home upgrade!

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