How to Replace Door Locks
Your first security measure is your door lock. It will stop unauthorized access into your home. Locks might need to be replaced due to signs of wear and tear or other circumstances such as moving into a new house or a break-in.
To begin, determine cost to replace upvc door lock mechanism of your cylinder by measuring the distance between the adjustment screw and the middle of the knob lock cylinder. This measurement will assist you select the appropriate lock.
Deadbolt
Installing a deadbolt is great way to secure your door from intruders. The bolt extends into the strike plate on the door frame when it's locked, making it much more difficult for burglars to break in through the door. A single-cylinder deadbolt can be activated using a key on the exterior, and a thumb-turn device located on the interior. Deadbolts are only effective when it's properly installed, though.
It is first necessary to determine if the door has an existing hole for a deadbolt, or if you have to drill it out. Utilizing the template included with the lock installation kit, mark the location of the hole for the deadbolt on the door's surface. Then, use the tape measure to determine how high the deadbolt should be. Then, mark this high point on the outside of the door. You can then use a speed square to draw an even line across the mark you made for the bolt hole.
Then using an electric drill, bore through the hole until it is on the opposite side of the door. This may take a while. Sand the hole and edge of the door to make it smooth. It's also recommended to stain or paint the door at this point.
When the door is in place remove any screws visible on the deadbolt. This will reveal the front and rear assemblies of the deadbolt and its bolt inside. Then, remove the bolt and replace it with a new one that matches your door hardware. The bolt is often connected to a set plate which you'll have to remove. After that it is time to chisel the area for the strike plate on the door frame.
If your strike plate is misaligned it's likely that the previous installer didn't correctly mortise it or a weatherstripping came along and changed the strike position. To correct this issue, you will need to remortise the strike plate as well as the deadbolt. Close and lock the deadbolt when you've completed this step. Test the deadbolt by closing it and locking it after the bolt has been extended into the strike plate.
Knob
If a door knob wears out it could make your home or business less secure. It could make it difficult to open or close the door, making it a good idea to replace it. It shouldn't take you longer than 30 minutes. Make use of pliers or a screwdriver to remove any knobs or handles. Be careful not to harm other parts of the door.
Before you start, you'll want to spray WD-40 or some other dry lubricant on the mechanism of the knob on your door. This will help the new lock slide smoothly as you turn it. To ensure proper operation, it's important to choose the knob and handle that match the doors you already have. If you don't have a match you'll need to purchase a replacement doorknob and latch plate.
Before you begin the replacement process, take a look at the knob that was previously used to determine what screws are holding it in place. If there aren't any screws, you can use a screwdriver to insert between the cover plate and the screws plate hidden and pop it off.
After you have removed the knob examine it for indications of damage and rust. If the knob shows any dents or marks it's time clean it. Otherwise it shouldn't require any major work.
Install the new knob. First, examine the two new knobs to ensure that you're picking out the right one for your door. You'll need to pick one with an extending rod that locks with the rod mechanism of the other knob. After you've placed the new knob over the hole in the door carefully slide it into the latch.
Thread the latch plate screws downwards and test the spring by pushing down on it several times. The latch should spring up each time. Install the second knob and secure it to the rod mechanism of the first knob. Thread in the other long screws from the knob's interior through the hole in the cylinder of the doorknob on the outside and secure it.
Latch
A latch is a piece of metal that extends through the door jamb to keep it closed. It is operated by a handle or knob on the inside of the door or a thumb turn on the exterior side of the door. A latch can be secured using deadbolts to stop intrusions from piercing the glass of the door. It can also protect against intentional or accidental closing by pets or children. A latch can be installed with one cylinder deadbolt or double cylinder deadbolts, depending on the security level you prefer.
Installing a deadbolt is exactly the same as installing a latch but there are some differences. To make sure that the new lock is compatible first, you must take a measurement of the setback on the doorjamb with the tape measure. The setback is measured from the edge of the doorjamb up to the center of hole for the latch plate. A typical setback is 2 3/8 to 2 3/4 inches. If your setback is higher, you may need to purchase a latch that is larger from a locksmith or hardware store.
The next step is to drill an edge bore hole in the doorjamb to accommodate the latch plate. Use a chisel and cut the mortise of the latch. Make sure the depth is enough to allow the faceplate to be in line with the doorjamb. Tape the strikeplate in place to ensure it is positioned correctly.
If the strike is too high, you can knock the door down or apply pressure using a tire iron or crowbar. This could cause the doorjamb to break. This can be fixed by drilling a new hole into the doorjamb, and removing the core from the old one.
The final step is to put in the new strike plate, which can be accomplished by screwing it over the screw holes that are already in place. Then, use wood putty to fill in the screw holes that were previously used and the bolt hole that will not be used. After the putty has dried you can sand it until it has an even finish.
Strike
The piece of metal that is inserted between the deadbolt and latch when the door is closed is an electric strike. It is a vital part of the lock's overall security because it prevents the door from opening and provides an additional barrier to force or kicking. If a door has been equipped with an electric strike, it will only be opened by an entry key or the control unit which controls the electrical impulses.
Traditionally, installing an electric strike meant cutting out a portion of the doorjamb to remotely remove the latchbolt of a circular lock from the pocket within the strike. This modification is not just undesirable however, it also exposes the mechanism of the latchbolt and keeper to unauthorized users.
Recently, a number of electric strike manufacturers have created an innovative type of electric strike called the "No Cut" strike that doesn't need cutouts in the doorjamb to function. The strikes have a unique design that allows the latchbolt and keeper to slide into the pocket without damaging the faceplate of the doorjamb.
The strike is equipped with an internal ramp that raises the latchbolt and keeper whenever it receives an electrical impulse from a reader or controller. The latchbolt and keeper are pushed up the ramp due to retraction. When the door is shut, the deadbolt remains in place and the latchbolt retracts into the keeper.
Installing an electric strike is an easy task, especially in the case of replacing the strike on a previous door. However, if you're upgrading to an electric strike to use with an access control system, you will have to ensure that your new system is compatible with the model of lock you've chosen to install. You will also have to ensure that the strike is connected to your access-control system and set up to function in a fail-safe way.
Upgrade your strike plates to heavy duty strike plates to stop the entry of unauthorized persons. The plates are made of up to six screws of three inches instead of the standard two screws of three-fourths of an inch. These longer screws make breaking the frame to reach the piece that turns the thumb on a single cylinder deadbolt more difficult.