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What Are PAS 24 Doors? Security & Building Regs Explained
What Are PAS 24 Doors? Security & Building Regs Explained
A comprehensive guide to UK door security standards
PAS 24 is a publicly available specification detailing the enhanced security performance requirements for doors and windows in the UK. Designed by the British Standards Institution (BSI), it guarantees that a doorset has been rigorously tested to withstand attacks from opportunistic burglars using common tools. If you are building a new home or an extension, fitting PAS 24 compliant doors is a strict legal requirement under Document Q of the Building Regulations.
Page Contents
1. What Exactly is PAS 24?
When you purchase a new front door, you want absolute peace of mind that it will keep intruders out. But how do you separate marketing claims from actual, proven security?
That is where PAS 24 comes in. Standing for Publicly Available Specification 24, it is an industry-standard testing method developed by the BSI Group. It provides a universal benchmark for measuring how well a doorset—which includes the door leaf, the frame, the hinges, and the locks all working together as a single unit—resists physical attacks.
2. The Anatomy of a PAS 24 Door
A door cannot pass the rigorous PAS 24 tests by accident. It requires meticulous engineering. While designs vary between manufacturers, a certified PAS 24 composite or uPVC door will generally feature the following highly specified components:
- 3-Star Anti-Snap Cylinders: Standard lock cylinders are a major weak point. PAS 24 doors utilise advanced cylinders designed to snap at a predetermined sacrificial point if attacked, leaving the core lock intact and engaged.
- Multi-Point Locking Systems: Instead of a single 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 smashed, the glass holds together like a car windscreen, preventing an intruder from reaching through to unlock the door.
- Hinge Guards (Dog Bolts): Interlocking steel bolts on the hinge side of the door ensure that even if an intruder manages to pry the external hinges off, the door cannot be lifted out of the frame.
3. How is a PAS 24 Door Tested?
A PAS 24 certificate is not handed out lightly. The testing is specifically designed to replicate the exact methods used by an opportunistic burglar who is trying to gain entry quickly and quietly. The tests are brutal and include:
Assessors spend a total of 15 minutes attempting to manipulate the lock cylinders, hinges, and hardware using a specific toolkit (including craft knives, screwdrivers, and levers). No single attack method can last longer than 3 continuous minutes.
Heavy weights are swung like a pendulum into the door leaf. This includes a 30kg soft sandbag to simulate a shoulder barge, and a 50kg hard body impact test to simulate aggressive kicking and battering at the locking points.
In addition to these, 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 disengage.
4. PAS 24 vs Secured by Design (SBD)
Homeowners often see “PAS 24” and “Secured by Design” used interchangeably, but they are slightly different:
- PAS 24 is the actual physical testing standard and benchmark.
- Secured by Design (SBD) is an official UK Police initiative aimed at designing out crime.
To be awarded the Secured by Design Police Preferred Specification, a door manufacturer must prove that their product meets PAS 24. Simply put: PAS 24 is the exam, and Secured by Design is the gold star you get for passing it.
5. Is PAS 24 a Legal Requirement? (Document Q)
The short answer is: It depends on your property.
Under Approved Document Q of the UK Building Regulations (introduced in 2015), all easily accessible doors and windows supplied to new build properties must meet PAS 24 security standards. This includes:
- Brand new houses and flats.
- Dwellings created by a “material change of use” (e.g., converting an agricultural barn or a commercial office into a residential home).
🏠 What about Extensions and Replacement Doors?
If you are building an extension or 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 for their families and possessions.
6. RC2 vs PAS 24: What is the Difference?
If you are researching high-end aluminium doors or steel security doors, you might see them advertised as meeting RC2 or RC3 standards instead of PAS 24.
| Standard | Origin | Testing Focus |
|---|---|---|
| PAS 24 | United Kingdom (BSI) | Focuses heavily on opportunistic, stealthy attacks common in the UK (e.g., lock snapping, manual manipulation with small tools). |
| RC2 (EN 1627) | Europe (European Standard) | Tests resistance against a casual burglar using basic tools (screwdrivers, pliers, wedges) for a continuous 3-minute attack. |
Which is better? Neither is strictly “better.” They are comparable levels of robust security. Many European-manufactured premium doors hold RC2 or RC3 certification, which is fully recognised and accepted under UK Building Regulations (Document Q) as providing an equivalent level of security to PAS 24.
7. Why Security Matters in Hampshire
While Hampshire generally enjoys lower crime rates than major urban hubs, opportunistic burglaries remain a reality. Modern intruders often target older uPVC doors with outdated, protruding lock cylinders that can be snapped in under 30 seconds.
By upgrading to a PAS 24 certified Composite Door, you eliminate these vulnerabilities. Our composite doors combine a high-density core with an impact-resistant GRP (Glass Reinforced Plastic) skin and anti-snap, anti-drill locking cylinders, providing an impenetrable barrier against local crime.
8. Frequently Asked Questions
A PAS 24 door is a complete doorset (including the frame, hinges, and locks) that has been independently tested by the British Standards Institution to withstand various forms of opportunistic physical attack, guaranteeing a high level of residential security.
Yes, but primarily for new constructions. Under Document Q of the Building Regulations, all easily accessible doors installed in new build dwellings (or properties undergoing a material change of use) must meet PAS 24 standards. For standard replacements on existing homes, it is highly recommended but not a strict legal requirement.
Not necessarily. RC2 is the European equivalent (EN 1627) to the UK’s PAS 24 standard. Both signify a highly secure door capable of resisting opportunistic attacks with tools. Document Q of the UK Building Regulations recognises RC2 as an acceptable equivalent to PAS 24.
Similar to doors, a PAS 24 window spec requires the window to pass rigorous manual and mechanical testing. Assessors will attempt to remove the glass infill, manipulate the locking hardware, and apply heavy mechanical loads to ensure the window cannot be forced open from the outside.
Yes, if the flats are part of a new build development or a conversion, Document Q dictates that the main entrance doors to the individual flats must meet PAS 24 security standards to protect residents against unauthorised entry.
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Mark Pearce is a highly experienced specialist in the double glazing industry, having built his knowledge from the ground up through hands-on experience in installation, manufacturing, sales, and business management. Beyond his role at KJM, Mark is a keen blogger, writer, and traveller, often sharing insights on the latest innovations in the home improvement industry.
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