Best Patio Door Security Locks for French Doors & Conservatories (UK G

French doors and conservatories bring light and style to your home — but they can also be a target for intruders. Large panes of glass, central handles, and easy access points make them vulnerable if not secured properly.

Browse our full patio door security collection for locks, euro cylinders and restrictor stays to protect French doors, conservatories and sliding patio doors.

One simple, cost-effective way to add extra protection is with the Home Secure™ Patio Door Security Lock — a quick-fit solution that offers both a visible and physical deterrent without damaging your doors.

🔍 Why French Doors Can Be a Security Weak Spot

Intruders often see French and patio doors as an easy entry point due to:

Large glass areas
Weak or worn locking systems
Handles that can be forced open from outside

Adding an additional lock significantly reduces the risk and increases peace of mind.

🔐 The Patio Door Security Lock – Instant Protection

If your French doors use a euro cylinder lock, make sure it has anti-snap protection.

A standard cylinder can be snapped in seconds — upgrading to a TS007 3-Star anti-snap euro cylinder is one of the most effective security improvements you can make. Browse our euro cylinder locks.

Our Home Secure™ Patio Door Security Lock works by securing both handles together, preventing them from turning and opening the door.

No drilling required – fits in minutes.
Visible deterrent – discourages attempts before they happen.
Universal fit – suitable for most French and conservatory doors.
Stylish design – blends with your existing décor

🌐 Shop the Patio Door Security Lock →

🛠 Easy, Tool-Free Installation

You don’t need to be a DIY expert to fit this lock. Simply:

Position the lock over both handles.
Secure it in place using the built-in mechanism.
Lock it with the included key for maximum security.

Instructional image showing how to operate a Home Secure door lock. Step 1: Slide to open using the black switch, shown in a close-up image labeled 'Open/Close.' Step 2: Place the lock over door handles and click into place

✅ Key Benefits at a Glance

Quick installation – no tools needed
Prevents handle movement entirely
Acts as a strong visual deterrent
Ideal for holiday homes, rental properties, and ground floor doors
Easily removable if not needed

🔗 Pair with Other Security Solutions

For the best protection, combine the Patio Door Security Lock with:

High-security Euro cylinder locks
uPVC door restrictor stays
Window security devices for adjoining windows

🔒 Expert Advice for Complete Home Protection

If you’re looking to make sure your security upgrades align with national safety recommendations, the UK Fire and Rescue Service provides helpful advice on balancing burglary prevention with safe home-exit planning. Their insights cover how to position locks, doors, and escape routes to ensure security never compromises safety. You can read more at UK Fire and Rescue Service – Home Safety Advice

❓ Frequently Asked Questions

Q: Will it fit my French or patio doors?
A: The lock is designed to fit most standard double-handle French and conservatory doors.

Q: Can I use it on sliding patio doors?
A: No — it’s intended for hinged double doors with handles.

Q: Will it damage my door?
A: No drilling or permanent fixings are required — it’s completely non-invasive.

Compatibility guide for Home Secure door lock. Text reads: 'Will fit majority of straight double door patio handles.

🏠 Boost Your Door Security Today

The Home Secure™ Patio Door Security Lock is a fast, affordable way to protect your home and deter unwanted visitors.

For sliding patio doors, a sash jammer fitted to the frame can prevent the door from being forced along the track.

Browse our sash jammers for a simple, affordable sliding door security upgrade.

👉 Order yours today →

Ready to secure your patio doors? Browse our full range of patio door security locks
and accessories, with fast 2-day UK delivery.

For a complete overview of all our door locks and security products — including front
door locks, multipoint mechanisms and window security — visit our high security door
locks collection.

Check out the featured products from this article below 👇 Including UPVC Door Restrictor Stay

Tags: Cylinder locks, French door security, Home safety tips, Home secure, Home secure locks, Home security, Home security tips, Patiolocks, Security devices

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FAQ

What is the best type of lock for a patio door?

The best lock for a patio door depends on the door style and the level of security you want. Many patio doors come with a basic handle lock, but adding a dedicated patio door security lock can significantly improve protection. These locks prevent the door from being forced or lifted from the track. For sliding doors, track locks or bolt-style security locks are common, while French doors often benefit from additional surface-mounted locks. Choosing a lock designed specifically for patio doors ensures it fits correctly and provides stronger resistance against forced entry.

Do patio doors need extra security locks?

Standard patio door handles usually include a basic locking mechanism, but many homeowners choose to add extra security locks for additional protection. Extra locks can prevent the door from sliding open or being forced from outside. They are especially useful for ground-floor doors or conservatory entrances, which can be common entry points during burglaries. Installing a secondary patio door security lock provides an extra barrier and helps make the door more resistant to forced entry without needing to replace the entire door system.

Can you add a security lock to an existing patio door?

Yes, most patio doors can have additional security locks fitted without replacing the door. Many patio door security locks are designed to be installed onto existing doors using simple fixings. These locks work alongside the existing handle lock and provide extra reinforcement. They can help prevent lifting, sliding, or forced entry attempts. When choosing a lock, it’s important to ensure it is compatible with the door type, such as sliding patio doors, French doors, or conservatory doors.

What locks are suitable for French patio doors?

French patio doors usually rely on a central handle lock and internal shoot bolts, but additional security locks can improve protection. Surface-mounted locks designed for French doors can secure both doors together and make it harder for intruders to force them open. Some locks also prevent the doors from being pried apart. Adding a dedicated security lock designed for French doors can strengthen the door’s overall resistance to forced entry while still allowing normal use. For more advice on improving double door security, you can also read our guide on how to secure your French doors.

Are conservatory doors secure enough with standard locks?

Conservatory doors often use similar locking systems to standard patio doors, but the level of security can vary depending on the door type. While the built-in handle lock provides basic protection, adding a dedicated security lock can make the door much more secure. Conservatories are sometimes targeted because they may provide easier access to the main house. Installing an additional conservatory door lock helps reinforce the door and provides an extra layer of protection against forced entry.

Best Patio Door Security Locks for French Doors & Conservatories (UK Guide)