Having a conservatory is brilliant all year round. Not only does it provide you with extra space in your property, but it’s versatile and can wear many hats. Keeping it secure is crucial – which means finding the right conservatory door locks. If you’ve built a DIY conservatory, you may have locks in your pack, but conservatory door security locks can be upgraded if necessary, especially if you aren’t happy with the look and feel of them. 

Conservatory locks should be considered early on, and will be determined by a number of factors. Don’t forget that security and maintenance should be a top priority alongside the design of the conservatory, so thinking about conservatory ladders and conservatory gutter brackets should be done around the same time as picking conservatory door locks.

If you’ve never gone through this process before, it can often be daunting with so much choice available. We review 8 of the best conservatory locks below, taking into account their durability, design and overall security which is paramount when picking the right one for your conservatory. We have included a selection of internal and external locks in this article.

1

Patlock Instant French Door and Conservatory Security Lock

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The Patlock Instant French Door and Conservatory Security Lock is an easy to fit lock which operates without needing a code or combination system, meaning that this can be suitable even for seniors who are looking for extra security without the added pressure of remembering numbers. Simple to put on, its robust design can be used on french doors and conservatory doors, it comes with two spare spindles and also acts as a visual deterrent for burglars due to its aesthetics. The design is patented meaning that you can be sure that it is a well-made, secure design that will keep your conservatory safe from intruders.

Key Features:

Easy to install design

Visually deterrent to intruders

Specification:

Brand

Patlock

Colour

White

Dimensions

41.8 cm x 4.4 cm x 8 cm

Pros

Comes with additional spindles - no need to repurchase another lock for a long time

Design is robust, slick but also deters burglars visually

Easy to install yourself

Cons

Should be used in addition to locks already in place - not just on its own

2

Patio Door Security Lock (Stainless Steel)

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The Patio Door Security Lock by Avonstar is 100% stainless steel lock that has an adjustable width bar and also acts as a visual deterrent for intruders. Its sturdy design works with two horizontal doors only, and fits on easily to keep your patio/conservatory doors shut, with an extra layer of security. The stainless steel means that it is virtually impossible to break, and cannot be tampered with by young children. It is also suitable for seniors as it doesn’t weigh too much, meaning that there should be no issues taking the lock on and off.

Key Features:

Stainless steel

Acts as a visual deterrent

Specification:

Brand

Avonstar

Colour

Metallic

Dimensions

400mm extension length in total

Material

Stainless steel

Pros

Durable design made with 100% stainless steel, virtually unbreakable

The installation is simple to do, so you won’t require a locksmith

If you are buying this for an older person, they will have no issues using it

Cons

May not fit all types of door handles - check before buying

3

Patio Security Door Lock (White)

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The Patio Security Door Lock in white is made from powder coated steel and is a sturdy design that will keep your patio/conservatory doors secure from intruders. The overall structure of the lock will fit behind most doors with ease, and also comes with the option to adjust so if your doors are slightly farther apart, it will still fit. It acts as a visual deterrent to intruders and the simple, white design will still go with the overall aesthetic of your conservatory. It is an extra layer of security which is affordable and will give you peace of mind if you are out of the property, or asleep. It is also difficult for children to tamper with, so don’t worry if you have young children in the house – they will not be able to take it off.

Key Features:

Coated Stainless steel

Easy to install

Extra layer of security

Specification:

Brand

Avonstar

Colour

White

Dimensions

400mm extension length in total

Material

Stainless steel

Pros

Made from 100% stainless steel so you can trust that it’s sturdy

Simple but effective design, acts as a visual deterrent too

Cons

Can’t be used as a standalone lock, must be an additional layer

4

Tough French Door Lock

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The Tough French Door Lock is a deadlock sliding fixed bar secured with a padlock. Its sturdy design and added layer of a padlock means that this is incredibly durable as a security measure. The visibility of the lock acts as a visual deterrent for intruders. The design is sleek and modern, with the finish looking glossy and high-quality – so it won’t look cheap (despite it being affordable). Easy to install, it’ll take you less than one minute to put the lock over the door. A faultless device that gives you peace of mind and an extra layer of security with the bonus of a padlock.

Key Features:

Slick, modern and high-quality design

Easy to install

Padlock included

Specification:

Brand

Tough

Colour

White

Material

Metal

Pros

High-quality design even though the product is affordable - looks sturdy

Acts as a visual deterrent with the added bonus of a lock

Easy to use

Cons

If you are prone to losing keys - this may not be the best lock for you

5

Patio French Door Lock

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The Patio French Door Lock is a deadlock design made of steel, making it virtually unbreakable and incredibly secure. It slides onto your door handles and is secured with a padlock, which can be done in less than a minute. It is suitable for most door handle sizes and fits over two side by side. The finish of the product is high quality but overall it’s affordable. It also comes with a brass padlock and two keys, although if you wanted to use your own padlock you could do this too. Overall, a sturdy lock that works for conservatory and patio doors perfectly.

Key Features:

Beautiful high quality design

Easy to install

Padlock included (brass)

Specification:

Brand

Tough

Colour

White

Material

Metal (Steel and brass)

Pros

Comes with a brass padlock for added security

Easy to fit design

Sturdy and durable - security without having to worry!

Cons

If you are prone to losing keys you should switch to a combination lock

6

High Security Deadlock Sliding Fix

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The Patio French Door Lock comes with a deadlock sliding fix style that fits over one door handle, perfect if you have a smaller conservatory. It comes with a lock and key for added security, and visually acts as a deterrent as intruders are able to see it. It is powder painted and has a high quality finish, but overall the product is affordable for what you get from it. High security, and you won’t have to worry about intruders whether you are outside of the property or asleep. It adds an extra layer of security that you want with a singular door.

Key Features:

Slick, easy to fit design

Fits specifically one door

Stainless steel and brass

Specification:

Brand

Tough

Colour

White

Material

Metal (Steel and brass)

Pros

Fits securely onto a singular door, which is often hard to cater to

Easy to install design

Made from stainless steel and comes with a heavy brass lock and key

Cons

Does not fit any bigger than one singular door handle

7

XFORT® Euro Cylinder Lock 40/40 (80mm)

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The XFORT Euro Cylinder Lock is a sturdy and chunky barrel lock with anti-bump, anti-pick and anti-drill design so it is virtually unbreakable by intruders. It works for wooden, metal and composite doors for your patio or conservatory. It comes with three keys and also the installation process is seamless, meaning that you won’t need a locksmith to come and help you fit it. Great if you think that your current locks are becoming flimsy/old and you want to ensure that you have a strong layer of security for your patio or conservatory doors.

Key Features:

Works with different door materials

Anti-bump, anti-pick and anti-drill design

Comes with three keys

Specification:

Brand

Maher London LTD

Colour

Grey

Dimensions

80mm

Material

Metal

Pros

Easy to install and works with a variety of door materials

Resists lock picking and drilling from intruders due to the study design

Cons

The lock is internal, therefore doesn’t act as a visual deterrent should you wish to have one

8

45/45 Nickel YALE Platinum

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The Nickel YALE Platinum Cylinder Barrel Lock is a high security lock that is durable and works with multiple doors. Resisting lock picking, bumping, drilling and pulling, it is designed to provide maximum security. It is easy to fit, meaning that you won’t need a locksmith to install this. It has a 3 star engraved which is a sign of its quality, therefore can act as a visual deterrent to intruders as they will not be able to break through the locks design. It comes with 3 keys, a keycard and fixing screws.

Key Features:

Has a visual deterrent despite being an internal lock

Anti-bump, anti-pick and anti-drill design

Specification:

Brand

Yale

Colour

Metal

Dimensions

45 mm x 45 mm

Material

Metal

Pros

Has a visual 3 star on the lock which proves its strength, therefore acting as a visual deterrent

Easy to install and resists lock picking, bumping and drilling

Cons

Check internal dimensions of door before purchasing, as the design is chunky

Summary

Finding the right lock for your conservatory can depend on many factors, including how strong your internal or external locks already are, and if you are happy with their performance. If this is a brand new conservatory, you may already be happy with the locks provided as they will be fresh out of the box. 

However, you may be looking for something slightly more durable, or a visual deterrent for intruders that may be looking to come into your home. It’s important that you feel safe in your home, and that you also feel safe to leave it. Security should be a priority when choosing locks, so aesthetics and pretty materials shouldn’t be a motivator in buying. 

Things to consider when buying a conservatory lock

Here are some things to look out for when purchasing your conservatory door locks.

Material

It’s important that when picking a conservatory door lock that you choose a material that is durable and secure. Be careful purchasing a lock that is made of weaker materials such as plastic or cheap metals, as these won’t offer you the security that you are looking for. Stainless steel is the sturdiest and there are brands that use 100% stainless steel but are still affordable. 

Internal vs external lock

Depending on personal preference, you need to decide whether you are looking for an internal or external lock, or both if you feel that your current locks are not up to par. An internal lock is crucial for every door to have, but doesn’t always provide a visual deterrent to intruders, therefore purchasing an external lock on top of this if that is your goal is advised. External locks unfortunately shouldn’t be used as an alternative to internal, only as an additional layer of security.

Padlock vs no padlock

Some external lock designs come with a padlock integrated into the system, which can also boost the visual design and look complicated for intruders to get past. However, if you struggle with misplacing keys or have young children that may get their hands on them and lose them, then you are better off opting for a design with no padlock. The overall security doesn’t make much difference with or without one, so it’s down to personal preference and how careful you are with keys.

FAQ

Do the locks work on french door handles?

Yes they do, but you have to check which ones work for double doors, as there are some designs that work specifically for a single door handle. These would be unsuitable for double doors as it wouldn’t fit, and also if they did the security would not be guaranteed.

Do I need tools to install the locks?

In some cases, yes. Most locks that are DIY will come with a full kit of instructions, but unless they come with the tools to install the locks then you will need them yourself, whether it’s a screwdriver or an electric one. 

Are the locks secure?

Yes of course! Make sure that you pick the correct sizing so there are no gaps, and that the lock fits snugly. This will eliminate any possibility of the locks being loose and therefore not fulfilling their purpose.

Do the locks work on single french doors?

Only the locks that are designed for single french doors will work, and these are specifically external locks. Internal locks will work on any door. 

Can the locks work outside the door handles as well?

Only if they are external locks. Make sure you check whether the locks are internal or external and that they have your dimensions in stock.