UNION

All your questions about locks answered

When choosing locks, it can be tricky to know where to start. There are so many questions to take into account. Let us help you

For example, what are the necessary standards and legislation for safety and security? How do the requirements change for fire doors? What types of door locks are available, and what are their various benefits?Here’s a guide to some of the questions you may have, so you can make the informed choice.

What are the types of door locks?

There is a wide range of door locks available, including sashlocks, deadlocks, bathroom locks, latches, escape locks, nightlatches, deadlocking nightlatches, and rollerbolts and rollerlatches.

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What type of door lock is right for each application?

To decide whether a door lock is right for an application, it is necessary to ask the following:

·         What security level is needed?

·         What type of lockcase is needed to suit the function of your door?

·         Is it a fire door?

·         What elements are required to ensure the safety of building users?

·         What size is needed?

·         Is a rebate kit required for a double door application?

What are mortice locks?

A mortice lock is a type of lock that is fitted in to a hole within the door (called a mortice). Commonly used for wooden doors, they are among the most popular lock types in the UK. You can explore our range of mortice locks below.

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Is it theoretically possible to create a key that opens all locks?

In the world? No. There are simply too many locks in the world for one key to work with them all.

It is certainly possible, however, for one key to open all locks within a building or series of buildings. Master key systems help to maintain better control, save key replacement costs, and are highly convenient, as there are fewer keys in circulation.

Learn more about master keying

What rebate kits are available?

Rebate kits are an additional accessory that allows a mortice lock to be used on rebated double doors. UNION has a range of sizes and finishes available.

 

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What is the safest lock for a front door?

The safest lock for a front door is a deadlock. This is a dead bolt that is moved by turning a key or thumbturn without the use of a spring. Deadbolts are heavier and thicker than standard spring latches and are usually made from steel or brass.

Aside from this, ensure that any solution you choose has been attack-tested and meets all the relevant standards.

Why does my door lock have two parts?

The smaller bolt is the latchbolt which is designed to locate in the strike plate hole on the door frame. The latchbolt retracts and projects by depressing kever handles or turning a thumbturn. The larger bolt is the deadbolt which is designed to only retract or project manually. This can be done by using a key or thumbturn. 

Can you use an old deadbolt and door handle on a new door?

Yes, most locksets can be taken off any door and installed on any other door as long as they are the same type and function. We would recommend checking the case size, backset and centres (if applicable) before buying a new lock.  

How do I reverse the latch?

Each lock is different so please check the fittng instructions. Most reversing of the latch is fairly easy however in some cases you may need to open the lockcase.

How do you secure your front door with secure locks?

If security is the main priority, the safest approach may be to upgrade a front door with a high security lock or sashlock to BS3621:2007. This standard is accepted by most insurance companies as the locks or latches are rigorously tested. A lock must exceed a minimum level of performance in all performance related categories such as durability, corrosion, security etc.  

Learn more about BS3621

View our range of locks here

  • 2 lever mortice locks

    We have a number of high-performance 2 lever locks for you to choose from, including our 2 lever mortice sashlock and 2 lever rebated mortice sashlock. Delivering two-way action, these are suitable for lightweight knobs or sprung handles. These are offered with a reversible latch and keys suitable for up to 50mm thick. It’s important to note, however, that these are not suitable for bolt through fixings. But for those seeking a 2 lever lock solution, these products could be just what you’re looking for.
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  • 3 lever mortice locks

    From mortice deadlocks to mortice sashlocks, we have a wide range of 3 lever locks available, delivering strong and robust security. Whether it’s our Essentials range, which can be easily retrofitted to many existing UK mortice locks on timber doors, to our 3 lever horizontal mortice lock, which can be deadbolt locked or unlocked by a key from either side, we have a range of proven solutions for you to choose from. Available in a range of finishes, we will have a 3 lever lock that meets your exact needs, helping to make your job easier.
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  • 5 lever mortice locks

    Our high-quality 5 lever mortice sashlock and mortice deadlock products can be deadbolt locked or unlocked by a key from either side and are provided with keys that can used on doors up to 54mm thick.Offered in either satin chrome or polished brass finishes, these products are also supported with a 10-year guarantee for total peace of mind.Our 5 lever mortice sashlock also features a reversible latch, and can be pierced to accept bolt through furniture.
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  • BS3621 5 lever mortice locks

    Our BS3621 5 lever mortice sashlock and mortice deadlock products are both accredited by Secured By Design. Part of the Police Crime Prevention Initiatives, Secured By Design plays an important role in helping stop crime, with only accredited products able to use its logo and title ‘Police Preferred Specification’. To meet these needs, products undergo rigorous testing.Featuring anti-saw security for resistance against attack, our BS3621 5 lever mortice sashlock and mortice deadlock solutions are suitable for doors up to 54mm thick.Backed by a 15-year guarantee and available in satin chrome or polished brass, the BS 3621 Kitemark makes sure these products are rated to help prevent lock snapping, bumping and other forms of lock attack.
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  • Cylinder lockcases

    Cylinder locks offer a flexible solution to provide high security on a wide range of door types. The two part assembly features a lockcase morticed into the door, paired with a locking cylinder which is used to operate the lockcase.
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