https://www.repairmywindowsanddoors.co.uk/eastbourne-door-locks-replacement-near-me/ How to Replace Door Locks Door locks are your primary security measure against unauthorized access to your home. The signs of wear and tear, and even instances such as moving into a new residence or burglaries, may trigger the need to replace your lock. To begin, determine the size of your cylinder by measuring the distance between the adjustment screw and the center of the cylinder knob. This measurement will allow you to purchase the correct-sized lock. Deadbolt If you're looking to ensure that your door is secure from criminals, it's a great idea to install deadbolts. The bolt extends into the strike plate that is on the door frame when it's locked, making it more difficult for a burglar to break in through the door. A single cylinder deadbolt is activated by keys on the exterior side and a thumb turn part on the interior. Deadbolts will only work when it is properly installed. It is first necessary to determine if the door has an existing hole for a deadbolt or if you need to drill it out. Mark the location of the hole for the deadbolt on the exterior of the door by using the template supplied with your lock installation kit. Then, you can use your tape measure to determine how high the deadbolt needs to be. Then, mark the high point on the outside of the door and use a speed square to draw a straight line across the mark you made for the bolt hole. Next, use a power drill to drill this hole until it reaches the opposite side of the door. This could take a while. Then, sand the hole and along the edge of the door so that it's smooth. At this point, it's a good idea to stain or paint your door. When the door is in place remove any screws that are visible on the deadbolt. This will reveal the front and back assembly of the deadbolt and also the bolt inside. Then, loosen the bolt and replace it with a new bolt that matches the door hardware. You will need to unscrew the bolt from a