Rim nightlatches – BS 10621 thief resistant – dual mode lock assembly Instead, you’ll have to improve the security of the door so go to Improving the security of your existing doors.
![night latch deadbolt lock night latch deadbolt lock](https://www.diydoctor.org.uk/project_images/nightlatch/nightlatch-mechanism.jpg)
These nightlatches have the same security attributes as ones certificated to BS 3621 but operate from the inside without the use of a key. If you are replacing the nightlatch and you share the main entrance door with another household fit one that is certificated to BS 8621:2007+A1:2009 Thief resistant lock assembly. Rim nightlatches – BS 8621 thief resistant – keyless exit In the UK, BS3621:2007+A1:2009 also requires the lock to undergo the 'General Vulnerability Assessment' which makes sure that the lock cannot be ‘bumped’, which is a term used to describe a method of opening the lock using a special key. These locks are not suitable for communal doors because of means of escape issues.īS 3621:2007+A1:2009 is based upon BS EN 12209 which is the European standard for a single point locking device and BS EN 1303 which is the European standard for lock cylinders. These higher quality rim nightlatches will sometimes have a flat ended latching bolt which is thrown into the keep as the door closes. This is the latest version of BS 3621, but it is likely that insurers will still accept locks certificated to the previous version, BS 3621:2004 or earlier versions, but check with your insurer.
![night latch deadbolt lock night latch deadbolt lock](https://i.pinimg.com/originals/9a/40/83/9a4083c353217c64e452fc58f2920bc4.jpg)
Locks like this will be marked by the British Standard Kitemark. If you are replacing the nightlatch make sure you buy one that is certificated to BS 3621:2007+A1:2009 Thief resistant lock assembly. Rim nightlatches – BS 3621 thief resistant Most of them also allow you to key lock the inside turn knob as well. When you close the door the pin is depressed into the mechanism and it deadlocks the latch, which will prevent slipping. These differ from the first two in having a deadlocking pin just above or below the latch. Some of them also allow you to lock the turn knob on the inside with the same key (instead of the snib) and this will prevent slipping from outside and the knob being turned by sticks, cables and so on through the letter plate.
![night latch deadbolt lock night latch deadbolt lock](https://images-cdn.ubuy.co.in/635f2f7fa6939c0f3667493b-qwork-night-latch-deadbolt-rim-lock-with.jpg)
This means that the latch cannot be slipped with a piece of plastic (James Bond style). These locks are the same as the nightlatches above except you can deadlock the latch from the outside with a turn of the key. Simples! Rim nightlatches – key deadlocking On back doors fitted with sashlocks, the sort with the handle and the key hole underneath, you’ll find that this too has a latch operated by the handle. If your door has a multipoint lock then there will be a latching bolt in the middle of the door that is operated by the handle.
![night latch deadbolt lock night latch deadbolt lock](https://i5.walmartimages.com/asr/a76f0b41-e25b-4a11-9a92-383abae9485a_1.98a0517ca9c8dac379ec652f5794893b.jpeg)
These sorts of locks are really at the bottom of the pile for security and were being supplemented with mortice deadlocks by the late 1960s. The latch can be deadlocked in an open or closed position by sliding the snib on the inner face. These locks always need a key to unlock them from the outside. The latch is withdrawn into the casing as you turn the inside knob to allow you to open the door, but you can close the door by simply pushing the door into its frame – a sort of ‘slam to lock’. The main ‘live’ bolt (or latch) in one of these has a rounded leading edge and is spring loaded. Rim nightlatches are sometimes referred to as ‘Yale’ locks, but of course Yale makes lots of different locks and lots of different lock manufacturers make rim locks! Most people with a timber entrance door or an older aluminium door will have one located about a third of the way down the door on the inner surface and you’ll use it to open and shut the door. The following paragraphs only deal with the ‘cylinder’ nightlatches, not the ‘old fashioned’ oblong shaped levered rim locks and latches that you may find fitted onto very thin doors in old houses (often internal doors). If the distance is 60mm then you'll have a standard stile nightlatch. If this distance is 44mm then you'll have a narrow stile nightlatch. To know which size you have on your door, measure the distance between the edge of the door and the centre of the keyhole. These come in a wide variety of styles and in two sizes with many different capabilities.