You might see doors and windows described as “PAS 24 tested” or “Secured by Design”. These are not just marketing phrases. They mean the product has been put through demanding security tests. Here is what they mean.
What is PAS 24?
PAS 24 is a security standard for doors and windows. Test houses attack sample doors and windows with the kind of tools and techniques a burglar might use, such as levers, screwdrivers and chisels, within a set time. Only those that resist the attack pass.
What is Secured by Design?
Secured by Design is a police-backed scheme that recognises products that meet high security standards. Doors and windows that meet its requirements, which include testing to PAS 24, can carry the accreditation.
Why it matters
- Tested products give you confidence that locks, hinges, frames and glazing work together as a system.
- Security of doors and windows in new homes in England is covered by Building Regulations, which refer to PAS 24 or equivalent standards.
- Insurers and buyers like to see good security, and it supports your peace of mind.
Product and installation both count
A tested product only performs as well as its fitting. It needs to be installed correctly and with the right components. That is why professional installation by a registered installer matters. Ask us about tested options for your doors and windows.

