Schüco Doors London Independent glazing guides · Herts
Glazing & Performance · Security Glass · Security & Locking

Security Standards for Doors and Windows

By SDL Schüco Doors London Team Published 28 July 2026Focus: schuco doors

Security is easy to specify once you know the handful of terms that matter. Here is what to ask for on aluminium doors and windows without paying for things you do not need.

PAS 24

PAS 24 is a UK test standard for enhanced security performance. A door or window tested to PAS 24 has passed defined attack tests. It is the baseline many insurers and self-build warranties like to see, and it underpins schemes such as Secured by Design.

Specification at a glance
PAS 24
enhanced security test
Multi-point lock
several bolts at once
Anti-snap cylinder
resists lock snapping
Laminated glass
hard to break through
Hinge protection
bolts / dog-bolts

Locking and cylinders

Multi-point locks throw several bolts into the frame at once, and an anti-snap (three-star or diamond-approved) cylinder resists the most common forced-entry method. On aluminium leaves the reinforcement is built in, keeping the lock geometry stable — more in Schüco front doors.

Glass that resists attack

Laminated glass holds together when struck, which slows or stops a break-in and doubles as acoustic glazing. On ground-floor and accessible openings it is a sensible upgrade.

Specifying sensibly

Prioritise ground-floor and rear openings, where most intrusions happen. A supplier who fits to PAS 24 as standard — as you would expect from established aluminium door and window specialists — makes this straightforward.