DIY How To

How to Fit a Cylinder Lock

Cylinder locks, also sometimes called Euro cylinders, are one of the most popular types of lock used around the home, and are most frequently fitted to PVC doors and windows. These locks are often used because they can be easily swapped if necessary for security.

The whole unit is contained in the barrel for ease of use. As technology improves, and locks are better at resisting force, it's often a good idea to change the cylinder to stay one step ahead of would-be burglars. Major stores have a good range of the latest cylinders, which are resistant to techniques such as bumping.

Method for fitting cylinder lock

PVC doors and windows generally already have the necessary fittings to accommodate a cylinder barrel, but if you're looking to attach one to a wooden door for example, then this guide will help you. Most locks should come with a set of instructions, but if you're still not clear, or they don't show you how to install into wood, then this is where you should start.

1. Mark the intended position of the lock on the door using a pencil. It's best to use the lock itself as a template.

2. Drill through the door. There should be instructions that come with the lock; these will tell you what diameter you'll need for the unit. Always remember to drill from both sides of the door, or you run the risk of splitting the wood on the outside, potentially ruining the look of it.

3. The cylinder should be inserted through the face plate, and the back plate mounted on to the back of the door. You'll then be able to screw the cylinder to the mounting plate.

4. Next is to mark the lock body. Put it over the mounting plate, so that you can pencil around the overhang.

5. You'll now need to chisel out a recess for the lock to go into. As with drilling, you must be careful to avoid damaging the wood.

6. Mark where the screws are going to go for the door plate and then drill holes for them. You can then fit the lock body.

7. Finally, shut the door until almost closed, with the locking bar out. Mark where it's going to go into the frame, and then chisel out the recess for it. Attach the metal keep around this recess.

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