Anti-Snap Locks Explained: Do You Need One?
If your UPVC or composite door has a standard euro cylinder, it may be vulnerable to 'lock snapping'. Here's what to know.
What is lock snapping?
Lock snapping is a technique where an intruder snaps a standard euro cylinder in two to reach the cam that operates the lock — often in seconds, with everyday tools and little noise. It's one of the most common methods used to break into UPVC and composite doors in the UK.
Most older UPVC and composite doors were fitted with standard cylinders that offer little resistance to this.
How anti-snap cylinders protect you
Anti-snap (or 'snap-safe') cylinders are engineered with sacrificial sections that break off in a controlled way, leaving the working part of the lock intact and still secure. The best ones carry the TS007 3-star rating or are Sold Secure Diamond approved.
They fit the same hole as your existing cylinder, so upgrading is quick and affordable — usually under 30 minutes.
Do you need one?
If your door is UPVC or composite with a euro cylinder, and you're not sure whether it's anti-snap, it's worth checking — especially after a move or if the door is at the front or side of the property. A quick upgrade is one of the most cost-effective security improvements you can make.
We carry anti-snap, anti-pick and anti-bump cylinders in common sizes and can advise on the right grade for your door across Catford and SE London.
Popular locksmith services
Every visit is handled with a security-first approach. We check the door, frame, keep, cylinder, handle, closer or mechanism before recommending a repair, so customers understand whether the fault is a simple adjustment, a lock replacement, a UPVC gearbox failure, a commercial door alignment issue or urgent make-safe work after damage.
For local SEO and customer clarity, this page connects the main Catford locksmith service with nearby South East London areas and the exact services customers search for. The business covers urgent and booked work for homes, rented flats, landlords, shops, offices, salons, restaurants and other local premises that need a reliable locksmith or commercial door specialist.
- Emergency locksmith response in Catford and SE6
- Domestic lock repairs, lost keys and lock replacements
- UPVC door locks, multipoint mechanisms and anti-snap cylinders
- Commercial locksmith work, shop doors and door closer repairs
- Burglary repairs, boarding up and same-day make-safe support
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Call 07557 957349 or send an enquiry for locksmith help from Bromley Rd, London SE6 2TS. You can also view the local base on Google Maps.