A Simple Guide to Choosing the Right Lock for Your Door

One of the most common questions we get asked as locksmiths is: "What lock should I actually have on this door?"

The honest answer is that it depends on the door type, how it's used, and what level of security you need. We often attend call-outs across Chester, Wrexham, Oswestry and Shrewsbury where the lock isn't faulty — it's simply not the right lock for the door.

This guide breaks things down in plain English, without the technical jargon.

UPVC and Composite Doors

Most modern homes have UPVC or composite doors. These typically use a multi-point locking system that secures the door in several places when you lift the handle.

The most important part of this system is the Euro cylinder — and this is where many older doors fall short.

What we recommend:

• Anti-snap Euro cylinders
• 3-star British Standard cylinders

Why it matters:

Older cylinders can be snapped in seconds using basic tools. Anti-snap locks are designed to break in a controlled way without actually opening the door. Many insurance policies now require this level of protection as standard.

If your key is a standard flat Euro key and the lock hasn't been changed in years, it's probably worth upgrading.

Wooden Doors

Wooden doors remain one of the most secure options available — provided they're fitted with the right lock.

The best option:

• 5-lever mortice deadlock (BS3621 rated)

Why it matters:

This is the lock most insurance companies require on a wooden door. Anything less than a 5-lever lock may reduce your cover and create problems if you ever need to make a claim.

A solid wooden door with a quality mortice lock is still one of the most secure setups you can have.

Aluminium Doors

Aluminium doors often use manufacturer-specific multi-point lock systems, and getting the right replacement matters.

Our advice:

• Always match the lock to the original door system
• Avoid forcing or modifying locks to fit

Using the wrong lock on an aluminium door can cause alignment issues or prevent the door from locking properly altogether.

Garage Doors

Garage doors are often targeted by burglars because they're frequently overlooked by homeowners.

Common security options:

• T-handle locks
• Internal deadbolts
• Security bars or defenders

If your garage is attached to the house or has internal access, upgrading the garage lock is just as important as securing your front door.

Vehicle Locks

Modern vehicle locks and keys are highly electronic, which means DIY solutions can cause more harm than good.

Common auto locksmith services:

• Car key replacement
• Remote and transponder programming
• Non-destructive vehicle entry

Attempting to bypass a car lock without the right equipment can damage the vehicle's electronics. A professional auto locksmith has the tools and training to do the job safely.

Commercial Doors

Businesses often have different security needs compared to residential properties.

Common solutions:

• High-security cylinders
• Master key systems
• Access control systems
• Anti-drill and anti-pick cylinders

The right setup depends on staff access requirements, opening hours, and your insurance policy.

When Should You Get a Lock Checked?

You should consider having your locks inspected or upgraded if:

• The lock is more than a few years old
• You've recently moved into a new property
• Keys have been lost or given to others
• The door feels stiff, sticky, or unreliable
• You're simply not sure what type of lock you have

A quick inspection can often prevent bigger problems down the line.

Honest Advice From Local Locksmiths

At Dee Valley Locksmiths, we don't just replace locks — we help people choose the right lock for their situation.

We provide straightforward advice and professional service across Chester, Wrexham, Oswestry, Shrewsbury, and the surrounding areas.

If you're unsure what lock you have or whether it's doing its job properly, we're always happy to take a look and give you an honest assessment.