Can You Get Replacement Keys for Garage Door Locks?

Garage door locks are a critical part of securing your property. For many households, the garage is more than just a space for the car. It often stores bicycles, tools, gardening equipment, and sometimes provides a direct route into the home. A reliable lock with working keys is therefore essential. But what happens if you lose a key, break it, or simply need more copies for family members? Can you get replacement keys for garage door locks, or do you need to replace the entire lock?

This guide explains the situations where replacement keys are possible, how the process works for different types of locks, and when it may be better or necessary to replace the lock entirely.

Why replacement keys may be needed

There are several reasons homeowners seek replacement keys:

• Keys are lost or misplaced and spares are required.
• More household members need access to the garage.
• A key has broken in the lock or become too worn to use reliably.
• A tenant moves out and a landlord requires fresh keys.
• The garage has been added to a larger property management system where duplicate keys are needed for maintenance.

In many cases, replacement is straightforward, but the exact process depends on the type of lock fitted to the garage door.

Types of garage door locks and their replacement key options

T-handle locks

T-handle locks are common on older up-and-over garage doors. They feature a T-shaped handle with a keyhole, and the key controls locking rods that extend into the frame.

Replacement keys for T-handle locks are sometimes available. Many have a key code stamped on the face of the lock or on the original keys. A locksmith or specialist supplier can cut a new key from this code. If no code is present, a locksmith may be able to create a copy by taking an impression of the lock.

However, cheaper T-handle locks may use very basic keys that are not widely supported. In these cases, replacing the handle and lock assembly may be quicker and more cost effective.

Euro cylinder locks

Euro cylinders are widely used on sectional and modern up-and-over doors. They are the same type of lock commonly found on front doors.

Getting replacement keys for euro cylinders is usually straightforward. If you still have a working key, a locksmith or key cutting service can duplicate it. If you have lost all keys, a locksmith can replace the cylinder and cut new keys to match.

Some high-security euro cylinders have restricted key profiles, meaning only authorised locksmiths can cut replacements. This improves security but may involve more cost or a longer wait.

Mortice locks

Mortice locks are fitted inside side-hinged garage doors. They use either lever keys or euro cylinders depending on the design.

Replacement keys for mortice locks depend on the type. Standard 5-lever mortice lock keys can usually be duplicated by any locksmith. If all keys are lost, the lock may need to be replaced. For mortice locks using euro cylinders, replacement works as described above.

Padlocks with hasps

Some garages use padlocks for additional or primary security. Padlock keys can usually be replaced easily, provided you have a spare to copy. Many locksmiths or hardware shops can duplicate padlock keys.

If all keys are lost, padlocks typically need to be cut off and replaced.

Slide locks for roller doors

Slide locks, often found on manual roller doors, sometimes feature keyed barrels. Replacement keys for these locks are not always available, as many are low-cost units with limited support. If keys are lost, replacing the entire slide lock is usually the simplest solution.

What to do if you lose all your garage keys

If you have lost every key to your garage, replacement keys may not be possible without changing the lock. This is especially true for low-cost locks with no identifiable key code.

In this case, you have three main options:

1. Call a locksmith to gain entry and fit a new lock.
2. Replace the lock yourself with a new handle or cylinder if you can access the inside of the garage another way.
3. Check with the door manufacturer if the lock has a serial number or key code system that allows new keys to be ordered.

Losing all keys can also create a security risk, since you cannot know who may find them. In these circumstances, replacement of the lock is usually safer than attempting to have new keys made.

The role of key codes in replacement

Many garage locks come with key codes, especially T-handle and euro cylinder systems. The code is a unique identifier that allows a locksmith or manufacturer to produce a replacement key without needing the original.

Key codes are often:

• Stamped on the original keys.
• Printed on documentation provided with the lock.
• Etched on the face of the lock itself.

If you have the code, getting replacement keys is usually straightforward. Without it, replacement becomes more difficult, particularly if no working key is available.

Costs of replacement keys

The cost of replacement keys varies depending on the type of lock:

• Standard duplicates for euro cylinders or mortice locks: £5 to £10.
• Restricted or patented profile keys: £15 to £30, sometimes requiring proof of ownership.
• Keys cut from codes without an original: £10 to £20.
• Locksmith callouts for lost keys and lock replacement: £80 to £150, depending on location and urgency.

These figures show that replacement keys are affordable if you already have a working key or code. The costs rise significantly if all keys are lost.

When replacement keys are not the best option

There are times when it is better to replace the lock rather than seek replacement keys:

• If the lock is old, corroded, or stiff.
• If the lock is a very basic model that offers little security.
• If all keys are lost and security could be compromised.
• If the lock does not meet current insurance standards.

Replacing the lock in these cases ensures improved security and peace of mind, rather than relying on worn or outdated hardware.

How to ensure you always have replacement options

To avoid problems in the future, it is useful to plan ahead when fitting or replacing garage locks.

• Keep a record of any key codes supplied with the lock.
• Store spare keys securely in the house, not in vehicles where they can be stolen.
• For high-security locks with restricted profiles, register with the manufacturer if required.
• When moving into a new property, replace or rekey garage locks immediately to ensure no old keys remain in circulation.

Insurance considerations

From an insurance perspective, a garage lock must be secure and functional. Insurers may also require locks that meet British Standards, particularly for garages attached to the main property.

If keys are lost and you cannot confirm that they are secure, replacing the lock is often the only way to ensure that your insurance remains valid. Attempting to use replacement keys when the originals could be in unknown hands may be seen as negligence.

Security tips related to replacement keys

• Always use a reputable locksmith or key cutting service. Poorly cut duplicates can damage the barrel of the lock.
• Avoid leaving labels or addresses on garage keys. If lost, this can make your property a target.
• If you suspect a lost key was stolen rather than misplaced, treat it as a security breach and replace the lock immediately.
• Do not share keys unnecessarily. The fewer in circulation, the easier it is to manage security.

Final thoughts

So, can you get replacement keys for garage door locks? In many cases, yes. Euro cylinders, mortice locks, and some T-handle systems support replacement keys, either through duplication or using key codes. Padlocks also typically allow easy duplication if at least one key is available.

However, not every garage lock supports replacement keys, particularly low-cost slide locks or budget T-handles. If all keys are lost or if the lock is old or inadequate, replacement of the entire lock is usually the safer and more effective option.

For UK homeowners, the key is preparation. Keep spare keys secure, record key codes, and consider the security of your garage lock as part of your overall home protection. Replacement keys are a convenient solution, but they are only effective if supported by a strong, reliable lock in the first place.