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Front Door Lock Barrel Replacement Front door lock barrel replacement is a relatively easy DIY project that can save you the cost of calling out locksmiths. You can buy kits that come with all the tools needed. You'll require a brand new cylinder lock barrel as well as a reliable screwdriver set, a hammer or pliers for added grip and a oil-based lubricant. Length There are a myriad of lock barrel types available to ensure that your front door is as safe as possible. When selecting the type of lock you want to purchase the length is vital to the security of your home. Cylinders that extend too far are susceptible to snapping, and those that are too small will prevent you from turning the key to unlock the door. There are a few ways to determine the length of a cylinder so that you can buy an alternative cylinder that provides the maximum security for your door. To determine the correct size of the cylinder, take out the old cylinder from the door. Remove the screws holding the lock cylinder. Once the cylinder is removed it is possible to measure from the center screw hole of the cylinder to the edge of the handle plate on the inside of door. Make sure to include the thickness of the plate, as well. You can also determine the cylinder size by measuring the length of the threaded spindle on the new cylinder. Install the cylinder inside your door after determining its length. Start by drilling a hole in the door. This is where the handle will be placed. It should be a little larger than the diameter of the new cylinder. Then, connect the handle inside or knob to the handle you want to replace and ensure that it goes through the latch's spindle and operates smoothly when turned. When replacing a deadbolt, it is recommended that you must also replace the strike plate. The strike plate is the piece of steel that mounts to the doorjamb and locks into the bolt when it's driven in by a lock. This plate should be replaced with a safer version. Look for a strikeplate with an reinforced metal construction to protect against kick attacks. Make sure to use screws that are 2.5-3 inches in length to ensure they penetrate deeply into the doorjamb. Design The lock cylinder is a part of the front door lock you utilize to open or close the handle. It contains pins that shift into place when you insert keys. When it comes to choosing the correct cylinder for your lock, you'll need to be aware of some things. For example, it's important to measure the length of your current lock to ensure you order the right size. It is also important to think about any door furniture like handles and escutcheons. Euro Cylinder locks are common in the home, and are offered in a variety of styles. Certain double cylinder locks provide security on both sides of the doors. They are often used on doors that require more security than conventional locks, as well as in commercial buildings with a few. If you're looking to purchase an upgrade to your lock, make sure that it's British Standards approved and meets the following requirements: Anti-Snap: A burglar may attempt to snap a cylinder by applying pressure to the outside of the door. To prevent this, a thin sacrificial strip should be cut into the cylinder. Anti-Drill – Some burglars attempt to drill into the lock and break into homes. To avoid this the pins on a cylinder must be made of a hardened metal. When you are looking for a new cylinder you must also ensure that it's anti-drill. This will prevent an intruder from drilling into the plug using a power drill and breaking it up. After you've selected the right cylinder lock, you'll need to gather the necessary materials for installing it. Included in this are a screwdriver suitable for the job, a hammer for extra grip, and pliers. It's important to have some oil on hand to ensure the mechanism is working smoothly. Be aware that changing locks on uPVC can be a challenge. If you are not confident about the job, it is best to call in a specialist or locksmith to assist you. Keyway The keyway is the form that the interface between the pins on the cylinder and the key adopts. The key has a set of ridges and grooves that run down the length of its “blade” and, when it is inserted, they align with the cutouts in the cylinder's pins. This is how the cylinder recognizes the correct key, and allows it to turn. Each brand of lock has a distinct keyway, that allows it to be locked or unlocked using a specific key. There are a variety of keyway sizes and shapes within a single brand. This provides a level security for locks since keys of the same brand cannot be used to open the other's. In most homes, the latch is operated by an adjustable lever that can be lifted or pushed in order to release the bolt. This is typically more comfortable than using a knob, which requires you to turn it. However some commercial settings make use of knobs to increase security. When the correct key is installed, a spring-loaded set of pins move into place to allow the plug to turn. The pins also align with grooves on the blade of the key, which allows them to recognize the correct key, but denying access. If the key or cylinder is not inserted correctly, the pins will move to the control shear rather than the operating line. The lock will not open. In the case of this particular photograph it's likely that the cylinder was re-keyed, a process where the pins that are in place are moved up to the correct height to allow the key to rotate freely inside the cylinder. This is common when a key needs to be moved from one lock to another in a dormitory. It is not uncommon for people to have their locks re-keyed when they move houses or to allow access to new roommates or employees without needing to change all locks to the same key. This is a cost-effective method to increase the security of a home. It can be done by changing only the key for the cylinder. Installation It is simple to change the barrels of locks in the uPVC door. www.repairmywindowsanddoors.co.uk is to find the screw under the lock at the edge of the door. It is usually distinct from the other screws because it is a different color. Then, remove it with an Phillips screwdriver. Next, take the new barrel and place it into the hole you removed. Then, replace the knob with the push rod and barrel. It is essential to confirm the orientation of each part (the barrel, push rod and lever housing / spring) before you begin assembling. Once the handle and knob are removed you can easily get to the lock's body loosening the set screw that holds it in place using an screwdriver. Once this is done the cylinder is turned counterclockwise to remove it. At this point, you are able to either keep the cylinder in place, and have your locks “re-keyed”, or remove it. A re-key will not change the pins in the cylinder, but will simply shift them to the key that matches it. The other option is to simply remove the cylinder and replace it with another. If you choose this option it is important to use the same size as your previous cylinder, and ensure that the pins are positioned correctly in order for your lock to work properly. After you have installed the new cylinder, it's recommended to grease it to make sure that everything is moving smoothly. The process is a bit more complicated if you're using mortise sets. This kind of lock is installed in a pocket (mortise), which is cut into the edge the door. It will require careful measurement and perhaps a few attempts to get the latch and the bolt sections to coincide. Once the latch and bolt sections are aligned then you can take off the strike plate, which is held in place on the top and bottom of your door frame with screws.