Quick answer
Many home insurers require BS3621 locks on final exit doors and suitable locks on uPVC doors. Check your policy wording, then check the marks on your locks.
Check your policy
Look for a 'locks' or 'security' clause. It often names BS3621 locks for timber doors and multipoint locking for uPVC and composite doors. Requirements vary between insurers.
Check your locks
Mortice locks and nightlatches: look for 'BS3621' and a kitemark on the faceplate. Euro cylinders: look for TS007 stars or SS312 Diamond.
If you're not sure
A locksmith can check each door, tell you what meets the standard and replace anything that doesn't.
Related services
- British Standard Locks — BS3621 and kitemarked locks that meet insurance requirements.
- Mortice Locks — BS3621 mortice deadlocks and sashlocks fitted, repaired and replaced.
- Anti-Snap Locks — Protect uPVC and composite doors from lock snapping.