I need to change the door lock.
ser-ra-TOO-ra — stress the third syllable; double 'r' gives a longer trill.
Use this when moving into a new apartment, after losing your keys, or when security improvements are needed. Changing locks is a common DIY task in Italy — ferramenta stock a wide range of locks and can advise on the best fit.
Serratura is the lock mechanism. Cilindro europeo (European profile cylinder) is the standard interchangeable lock type in Italy, identifiable by its oval shape. You can replace just the cilindro without changing the entire serratura. Italian apartments often have triple-point or four-point locks (serrature a più punti di chiusura) for added security.
Ho perso le chiavi. Devo cambiare il cilindro.
I've lost my keys. I need to change the cylinder.
The cylinder (cilindro) is usually all that needs replacing — cheaper and faster than a full lock change.
Che marca è la serratura? Serve per trovare il cilindro giusto.
What brand is the lock? It's needed to find the right cylinder.
European profile cylinders must match the lock brand or have adjustable length.
Voglio una serratura di sicurezza con chiavi non duplicabili.
I want a security lock with non-duplicatable keys.
Security cylinders with patented keys that cannot be copied without authorisation.
Italian apartments in older buildings often still use antique serrature (locks) with large ornate keys — these cannot be upgraded without changing the entire lock and door fitting. Italian security regulations since 2006 recommend serrature certificate Class 4 or higher for apartment entrance doors, especially in cities with higher burglary rates like Milan and Naples.