What Are PAS 24 Doors? Security & Building Regs Explained

A comprehensive homeowner’s guide to UK door security standards, testing procedures, and planning rules.

1. What Exactly is PAS 24?

When you purchase a new front door or set of bifolds, you want absolute peace of mind that it will effectively keep intruders out. But how do you actually separate clever marketing claims from proven physical security?

That is precisely where PAS 24 comes in. Standing for Publicly Available Specification 24, it is an industry-standard testing method developed and overseen by the BSI Group. It provides a universal benchmark for measuring exactly how well a complete doorset—which includes the door leaf, the structural frame, the hinges, and the locks all working together as a single unit—resists physical attacks.

To successfully achieve PAS 24 certification, the entire doorset must pass rigorous independent destruction testing.

2. The Anatomy of a PAS 24 Door

A door cannot pass the intense PAS 24 tests by accident or luck. It requires meticulous, heavy-duty engineering. While exact designs naturally vary between manufacturers, a certified PAS 24 composite or aluminium door will generally feature the following highly specified components:

• 3-Star Anti-Snap Cylinders: Standard, cheap lock cylinders are a major weak point. PAS 24 doors actively utilise advanced cylinders designed to intelligently snap at a predetermined sacrificial point if attacked, successfully leaving the core lock intact and engaged.
• Multi-Point Locking Systems: Instead of relying on a single flimsy latch, these doors lock at multiple points simultaneously along the frame, typically using heavy-duty steel hooks and deadbolts.
• Laminated Security Glass: If the door has glazed panels, standard toughened glass is not enough. It must be fitted with at least one pane of 6.8mm laminated glass (rated P1A). If violently smashed, the glass holds securely together like a car windscreen, physically preventing an intruder from reaching through to unlock the door.
• Hinge Guards (Dog Bolts): Interlocking steel bolts located on the hinge side of the door ensure that even if an intruder manages to pry the external hinges entirely off, the door cannot be lifted out of the frame.

3. How is a PAS 24 Door Tested?

A PAS 24 certificate is never handed out lightly. The testing protocol is specifically designed to replicate the exact methods used by an opportunistic burglar attempting to gain entry quickly and quietly. The tests are brutal and include:

In addition to these, powerful hydraulic rams apply intense pressure (Mechanical Loading) to the corners and locking points of the door to see if the frame will buckle or the locks will ultimately disengage.

4. PAS 24 vs Secured by Design (SBD)

Homeowners often see the terms “PAS 24” and “Secured by Design” used interchangeably in brochures, but they are slightly different entities:

• PAS 24 is the actual physical testing standard and technical benchmark.
• Secured by Design (SBD) is an official, highly respected UK Police initiative aimed at designing out crime. You can read more about their mission at Secured by Design External.

To be awarded the coveted Secured by Design Police Preferred Specification, a door manufacturer must comprehensively prove that their product meets PAS 24. Simply put: PAS 24 is the difficult exam, and Secured by Design is the official gold star you get for passing it.

5. Is PAS 24 a Legal Requirement? (Document Q)

The short answer is: It depends entirely on your property.

Under Document Q building regulations doors (introduced in 2015), all easily accessible doors and windows supplied to new build properties must legally meet PAS 24 security standards. This explicitly includes:

• Brand new houses and ground-floor flats.
• Dwellings created by a “material change of use” (e.g., converting an agricultural barn or a commercial office into a residential home).

Many homeowners ask: is pas 24 a legal requirement for replacement doors? If you are simply replacing an old uPVC or timber door on an existing property, you are not legally obligated to upgrade to a PAS 24 certified door (unless the original door was already certified). However, as a trusted installer, we strongly advise homeowners to insist on PAS 24 products regardless of the regulations, to ensure the ultimate protection against break-ins.

6. Interactive: Document Q Compliance Checker

Confused about whether your project legally requires a PAS 24 door? Use our quick compliance engine below. Select your project type and the location of the door to see the building control requirements.

7. RC2 vs PAS 24: What is the Difference?

If you are actively researching high-end aluminium doors or steel security doors, you might see them advertised as meeting RC2 or RC3 standards instead of PAS 24. When comparing the rc2 vs pas 24 security standard, it helps to look at their origins.

Which is better? Neither is strictly “better.” They are highly comparable levels of robust security. Many European-manufactured premium doors hold RC2 or RC3 certification, which is fully recognised and legally accepted under UK Building Regulations (Document Q) as providing an equivalent level of security to PAS 24.

8. Why Security Matters in Hampshire

9. Frequently Asked Questions