What is Lock Snapping and How to Prevent It
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Lock snapping has become one of the most common methods burglars use to gain entry to homes. It’s fast, quiet, and highly effective against older or unprotected door locks. This guide explains what lock snapping is, why it’s so effective, and how you can protect your home.
What is Lock Snapping?
Lock snapping is a burglary technique that targets euro cylinder locks, which are widely used in UPVC and composite doors. Euro cylinder lock snapping accounts for approximately 27% of all burglaries, nearly 1 in 3 forced entries.
The process involves a burglar applying pressure to the exposed part of the lock cylinder until it snaps in half, exposing the internal mechanism. Once exposed, the intruder can manipulate the lock and open the door. Alarmingly, this can be completed in as little as 30 seconds using basic tools such as pliers or a screwdriver.
Why is Lock Snapping so Effective?
Lock snapping works so well because most euro cylinder locks are not built to resist force. Key weaknesses include:
- Cylinder protrusion: If the cylinder sticks out more than 2–3mm from the door, it provides leverage for snapping.
- Weak internal construction: Many cylinders snap at their weakest point under force.
- Silent entry: Unlike kicking in a door, lock snapping is quiet, reducing the chance of detection.
How to Prevent Lock Snapping
Protecting your home requires upgrading your locks and door hardware. The most effective strategies are:
1. Install an Anti-Snap Euro Cylinder
There is one very effective way to prevent lock snapping, installing an anti-snap euro cylinder. Upgrading to a TS007 3 star or sold secure diamond rated anti-snap lock, these offer the most protection.
Anti snap cylinders are designed with a dedicated snap line, meaning that when a burglar applies pressure, it will snap at the predetermined place. Allowing the internal mechanism to stay hidden, stopping any manipulation to open the door.
Anti-snap cylinders should:
- Break in a controlled way
- Protect the internal mechanism
- Remain secure even when part of the cylinder is snapped off
Upgrading to this type of lock will drastically lower the chances of you falling victim to lock snapping.
2. Use High-Quality Door Handles
Even an anti-snap lock can be breached if paired with a weak door handle,
Your door handles should be:
- Cover the cylinder to reduce exposure
- Be made from hardened materials
- Include anti-pull or anti-grip protection
Handles tested to TS007 2-Star standard work in combination with a 1-Star cylinder to provide full protection.
3. Ensure the Lock Does Not Protrude
Having your cylinder protruding more than normal increases your risk of someone snapping your lock.
Your cylinder should:
- Sit flush with the handle
- Not stick out more than 2mm
It’s important that you use a professional locksmith to install your locks, to ensure they are installed and are working correctly.
Cost of Anti-Snap Locks
The cost of an anti-snap lock can start from £50 upwards, but can be higher or lower depending on size, make and model. Anti-snap locks are more expensive than general locks due to their higher security, so don’t expect to pay the same amount as a generic lock.
Best Anti-Snap Locks in 2026
The most secure locks in 2025 are SS312 Diamond Standard approved. When choosing a lock, consider:
- Security ratings
- Durability
- Features that protect against snapping, drilling, and picking
Is My Lock Vulnerable?
It’s important to do an assessment of your lock yourself to see if the security could be improved.
Ask yourself:
- Is the lock more than 5-10 years old?
- Is there a visible security rating?
- Does the lock stick out from the handle?
- Is my lock the same one that was installed with the door?
If the answer to any of these is yes, then you need to make some security updates. A professional locksmith can give you a security check and advise what you might need to do to improve security.
Conclusion
Lock snapping is a common and effective burglary method, but you can protect your home with the right precautions. Installing an anti-snap cylinder, using high-quality door handles, and ensuring your lock does not protrude are essential steps to enhance your home security in 2026.
