PAS is a national standard designed to assure quality and to give buyers genuine confidence when buying a certified product. In this guide, we provide an in-depth explanation of what PAS 24 is and what it means for consumers.

Read on to learn all you need to know about how windows and doors are tested to this standard, alongside answers to any questions you may have.

What Does PAS Stand For?

The acronym PAS stands for Publicly Available Specification. It is an industry standard designed to ensure all manufacturers in the relevant sector are manufacturing and selling products that surpass the benchmark for minimum quality.

There is a little confusion about PAS, as PAS 24-1 was originally published as PAS in 2003. PAS 24 came into being in November 2007, evolving from the original PAS 24-1. There are still some Product Assessment Specifications that exist as revisions originally published before 2002, but must have now been withdrawn.

PAS is an official British Standards Institution (BSI) acronym for Publicly Available Specification. It is the BSI that manages the setting and distribution of the PAS standards.

What Does a PAS 24 Certificate Actually Mean?

PAS 24 is a standard of testing aimed at measuring the security performance of windows and doors. The main focus is on ensuring they can withstand a level of attack from an opportunist burglar. The previous standard was PAS 24: 2016, but this has now been entirely replaced by PAS 24: 2022.

PAS 24 was developed with input from key organisations with expertise in the field of home security, construction and window manufacture. These include:

It is strongly advised that you only purchase doors and windows that meet this standard. Anything that doesn’t may fail to provide the required level of security, so look out for the BSI logo and the PAS 24: 2022 mark.

PAS 24 vs Secured by Design – What is the difference?

Secured By Design, also known as SBD, is an initiative that arranges accreditations for products on behalf of the police service. To earn a SBD Standard, the product must pass tests designed to help prevent crime according to a ‘Police Preferred Specification’.

SBD approval can only be granted to products manufactured by a brand that has a Secured by Design licence. PAS 24 and Secured by Design are, therefore, entirely separate things. However, most products must meet PAS 24 standards in order to earn SBD certification, as well as various other SBD requirements.

Is PAS 24 a Legal Requirement?

PAS 24, or an equivalent standard, is now a requirement in order to meet Building Regulations for new builds.

What is Approved Document Q?

In October 2015, Approved Document Q: Security – Dwellings came into effect. It supports the existing Q1 of Schedule 1 to the Building Regulations 2010.

Building Regulations now dictate that all new build properties must be able to “resist unauthorised access to any dwelling”. This means any section of the building that provides access to a flat within the building.

To adhere to these Regulations, doors, and windows must be compliant with PAS 24: 2022 or an equivalent standard.

For doors, this means:

For windows:

What Are the Requirements for PAS 24?

An independent testing company must carry out the testing for a manufacturer’s products to get PAS 24: 2022. The testing company must be certified by the United Kingdom Accreditation Service (UKAS).

UKAS is a regulatory body that ensures product testing companies are fully compliant in the testing methods and equipment they use. The process of testing and certification ensures that not only the products, but also the manufacturing processes, consistently meet standards.

The testing house will visit the manufacturer’s plant regularly to assess and re-test products to make sure they still perform to the required standards. If any products are awarded with the Standard and have a component subsequently changed, they must be re-tested.

PAS 24 is a minimum standard, so it doesn’t include a grading system. A window or door either passes, and is awarded the accreditation, or it fails.

To meet PAS requirements, the door/window should meet the BSI performance criteria as laid out in the following table:

BS 6375 – 1:2015+A1:2016Part 1Classification for weather tightness and guidance on selection and specification
BS 6375 – 2:2009Part 2Classification for operation and strength characteristics and guidance on selection and specification
BS 6375 – 3:2009+A1:2013Part 3Classification for additional performance characteristics and guidance on selection and specification

The PAS 24 Testing Process

Doors and windows are tested in two key areas for PAS 24:

Let’s look at the testing processes in more detail.

PAS 24 Testing For Doors

Here’s how the security test is carried out:

Weather resistance is tested by placing the door in a pressure chamber to exert varying degrees of pressure on the door to simulate wind pressure. The door is tested for water tightness by spraying the exterior face with a jet of water.

PAS 24 Testing For Windows

Here’s how the security of windows is tested:

Similar to a door, weather resistance is tested in a pressure chamber where different wind pressures are tested and the window’s surface is sprayed with a jet of water.

Why choose Eco Thermal Design for your new windows?

Eco Thermal Design has transformed countless homes across Barnsley, Sheffield and other areas of South Yorkshire. We are experts when it comes to windows and can help you find the right windows for your home. All of our windows are manufactured to PAS 24 standards, ensuring you and your family can sleep sound in the knowledge your home is secure.

We manufacturer our windows in our factory in Barnsley, and only work with quality brands such as KömmerlingSchucoSheerline and Origin. We also offer Residence Collection windows, perfectly suited for period properties.

Our expert team can help you decide on the right window for your home, and our team of fitters can complete their work to the highest standards, causing you minimal disruption along the way. We’re proud of the quality of our products, work and people, which is echoed by our customers in our Which Trusted Trader reviews.

If you would like to speak to one of our window experts or get a quote, you can contact us here or give us a call on 0800 009 6241.

What Our Customers Say

“Quality products are only as good as the team that fit them and in our case both the product and the fitters resulted in a first class and professional installation. Respectful of our home and tidied up at the end of each day….Thank You”
Les Finucane

“Excellent service from Eco Thermal again. Would recommend to anyone. Also good to have a local firm that you can trust.”
Ross Duguid

“Very happy with the whole process and of course the finished installation.”
Michael Senior

You can also read our reviews on Which Trusted Trader where we are rated five stars.