The short answer
They are three different things. PAS 24 is a test standard for the security of doors and windows, used in Building Regulations Part Q for new homes. LPS 1175 is a Loss Prevention Certification Board standard that rates building products for resistance to attack. Secured by Design is a police-backed crime prevention initiative. We do not hold LPS 1175 certification or Secured by Design membership; any certification belongs to the manufacturer of the product.
What is PAS 24?
PAS 24 sets out enhanced security tests for doorsets and windows in the UK. It tests the whole product, including the frame, glazing, hardware and how the glass is retained, against a set of manual attacks. Approved Document Q in England and Wales refers to PAS 24 for easily accessible doors and windows in new homes. Glass in those products is typically laminated to at least P1A under BS EN 356.
What is LPS 1175?
LPS 1175 is a standard published by the Loss Prevention Certification Board (LPCB) for intruder-resistant building products such as doors, windows, shutters and screens. Under Issue 8, ratings combine a letter for the attack tools and threat level with a number for the delay in minutes, from A1 up to H20. Earlier issues used security ratings SR1 to SR8. Certified products are listed on the LPCB's RedBookLive website.
What is Secured by Design?
Secured by Design is the official police crime prevention initiative in the UK. It publishes design guides for new developments and refurbishments and lists member companies whose products have been independently tested and certified to recognised standards. Whole developments can also be assessed against its guidance, which looks at layout, lighting and access as well as doors and windows.
How do these relate to glass?
A BS EN 356 class describes the glass alone. PAS 24 and LPS 1175 describe a complete, tested product, in which the glass is only one part. A highly rated pane in an untested frame is not an LPS 1175 or PAS 24 product, and replacing the glass in a certified product with something different can take it outside its certification.
Do you hold these certifications?
No. We do not hold LPS 1175 certification or Secured by Design membership, and we do not describe our work as certified. Where a specification, insurer or police adviser asks for a certified door, window or screen, we can quote for a product certified by its manufacturer, give you the certificate reference, and fit it to the manufacturer's instructions. The certification stays with the manufacturer's product.
How can I check a certificate?
- For LPS 1175, search the product or manufacturer on RedBookLive
- For Secured by Design, check the company and product on the Secured by Design website
- For PAS 24, ask for the test or certification evidence for the exact product and size
- Make sure the certificate covers the product as it will be installed, including its glass
Sources
- Approved Document Q: security in dwellings (GOV.UK)
- RedBookLive: LPCB-certified products
- Secured by Design
- BS EN 356:2000 Glass in building. Security glazing. Resistance against manual attack (BSI)
This guide is general information, not legal advice. Rules differ between England, Wales, Scotland and Northern Ireland; check with your council, building control or insurer where it matters.
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