🔐 Types of Door Locks Explained

A Simple Guide to Choosing the Right Lock for Your Home

Recently, a friend told me they were thinking about upgrading to a smart lock.

So I asked a simple question:

👉 “What kind of lock do you have now?”

And… they paused.

They couldn’t quite name it.

And honestly — it made me realise something.

Have you ever looked at your door lock…and realised you don’t actually know what type it is?

You’re not alone.

Most people only start paying attention to locks when something goes wrong —lost keys, broken handles, or simply wanting better security.

But here’s the thing:

👉 Not all locks are the same and choosing the right one can completely change how your home feels.

So today, let’s break it down — simple and practical.

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1. Deadbolt Lock

This is the one lock you should care about first.

A deadbolt is different from a standard handle lock because:

• It doesn’t rely on a spring

• It can’t be easily forced open

• It provides real security, not just convenience

👉 That’s why most secure doors use both:

• Handle lock (daily use)

• Deadbolt (security)

💡 Simple takeaway:If your door already has a deadbolt, you’re already halfway there — upgrading is easy.

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2. Knob Lock & Lever Handle Lock

These are the locks we use every day.

Knob Lock

• Built into the round door knob

• Common in older homes

• Not very secure on its own

Lever Handle Lock

• Easier to open (especially for kids or elderly)

• More modern design

• Often used in homes and offices

👉 But here’s the truth:These are for convenience, not security.

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3. Mortise Lock

(commonly used in Europe)

This type is built inside the door.

• Strong and durable

• Often used in Europe / Ireland

• Supports multiple locking points

💡 This is what many Irish doors already have —which is why upgrading to a smart lock is often possible.

But here’s something important:

👉 When upgrading, you’re not just changing the lock on the outside. You also need to choose a compatible mortise inside the door.

That usually means:

• Checking the size

• Making sure the structure fits

• Sometimes replacing the mortise itself

  
  

💡 A quick measurement can make all the difference —and avoid installation issues later on.

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4. Cylinder Lock 

(commonly found in many homes)

This is the part where you insert your key.

• Common in European doors

• Easy to replace

• Often used with smart lock upgrades

👉 That’s why many upgrades don’t require changing the whole door.

This is the part where you insert your key —the section that actually controls the locking mechanism.

• Common in European doors

• Easy to replace

• Often used for smart lock upgrades

👉 That’s why many upgrades don’t require changing the whole door.

💡 A quick note:

The cylinder is the part you insert your key into,while the mortise is the internal locking system inside the door.

In many cases, they work together —which is why choosing the right combination matters when upgrading.

If your door uses a cylinder lock,

upgrading to a smart lock is usually quick and straightforward.

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5. Digital Lock / Smart Lock

This is where things get interesting.

Once people try it…

they rarely want to go back to keys.

Instead of keys, you can use:

• Passcodes

• Fingerprints

• Cards

• Mobile apps

• Facial recognition

💡 Real-life benefits:

• No more lost keys

• Temporary access for guests / cleaners

• Activity logs (who opened the door & when)

👉 And in some newer models,you don’t even need to touch anything —

the door unlocks as soon as it recognises you.

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6. Other Types (Quick Overview)

• Padlock → Portable, used for gates or storage

• Chain Lock → Basic door safety

• U-Lock / Cable Lock → Bikes & outdoor use

• Latch Lock → Simple indoor locking

👉 These are useful, but not your main home security solution.

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So… Which Lock Should You Choose?

Here’s the honest answer:

• Want basic daily use → Handle lock is enough

• Want real security → Add a deadbolt

• Want convenience + control → Go smart

It sounds small…

But your door lock is something you use every single day.

And once you upgrade it—you start wondering why you didn’t do it earlier.

👉 Thinking About Upgrading?

If you’re not sure what type of lock your door has,you can simply send us a photo—we’re happy to help.

Let’s make your home smarter, together. 🏡✨