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Multipoint Door Locks

If your external door is fitted with a multipoint door lock that needs to be replaced, we sell some of the best uPVC door locks available on the market. We provide a range of branded uPVC door locks manufactured by many of the major lock brands that includes AGB, GU, Fuhr, Maco, Millenco, Winkhaus & Yale.

With so many locking systems on the market, it can be confusing trying to decide which multipoint lock that you need. So to make it easier for you to choose, we have put together a helpful guide at the bottom of this page that will explain how to identify a multipoint door lock.

What is a multipoint lock system?

This is a special type of locking mechanism that is fitted to the full length of a door. It features multiple locking points made up of a central deadbolt pin and works together with various bolts and hooks that lock into place when the handle is operated. These locking points provide increased security for your home whilst offering improved seal compression, and are available to suit all types and styles of doors.

When trying to identify your uPVC door lock, the first step should be to check to see if the lock has any markings on it. The lock should show a manufacturer’s name or maybe a serial number. Some uPVC door locks (such as Winkhaus, Safeware, ERA, GU, Fuhr, Maco, Roto for example) should have a logo on either the faceplate that runs along the edge of the door, or on the lock case itself. To make it easier to identify a door lock, it helps to remove the lock from the door first.

Measuring a uPVC multipoint door lock mechanism

Two vital measurements to check are the PZ (sometimes called the “centre size”) and Backset sizes, as shown in this lock case diagram;

Measuring the 'PZ' and 'Backset' of a multipoint lock

You will also need to check the various dimensions between the locking points, try to match these up with the technical drawings on the product pages. There are many different types of locking point so be careful when you check!

In addition to the latch in the centre, your lock may also have a combination of hooks, deadbolts, roller or mushroom cams etc. The more common locking point types are shown in the following illustration;

Illustration showing different locking points on a multipoint door lock

You also need to know how your lock is operated — the majority of multipoint locks are lever operated, whereby you lift the lever upwards to engage the locking points, then turn the key to deadlock it. Many front-door locks operate in this fashion but do not allow the lever to open the door from outside, stopping anyone from gaining entry without a key. To provide this function, these locks either have a single split spindle drive, (this is called a “Split Follower”), or have two spindle holes instead. Both methods achieve the same function.

Other locks are operated purely by turning the key a few turns to lock and unlock the door, these are known as “key-operated locks”.

If you’re still having trouble determining which replacement multipoint lock you need, please get in touch. We’re happy to help you with any technical questions.

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