Door Lock Repair - How to Fix Common Problems

If a lock doesn't latch properly is a clear indication that it needs to be repaired. The testers from CR mark the spot where the latch meets the strike plate with lipstick. Tightening the hinge screws can fix the problem.

Spraying a dry lubricant, such as powdered WD-40 or graphite powder on the lock's cylinder could aid in.

Check the Latch

The latch is bolt that extends out of the door frame and locks the lock when the handle or knob is retracted. Deadbolts and positive locking latches are popular choices for extra security. If yours isn't closing or latch correctly, it could be due to a misalignment of the latch and strikeplate within the door frame.

The most common reason is loose hinges that tend to sag over time and cause the latch to go over the strike plate. Make use of a lipstick test to test. Apply some lipstick to the edge of the latch and stick a strip of masking tape to the strike plate. Close the door and you will be able to see where the latch is touching the plate. This will allow you to determine whether the contact is high or low for proper operation.

If the latch is connecting to the strike plate more than 1/8 inch too high or too low, you'll have to reposition the strike plate. This is a simple task that can usually be done without the need to remove the doors. You will need to use a filing to enlarge your strike plate hole. A half-round file is best since it follows the shape of the strike plate hole.

After moving the strike plate, you will need to tighten screws that secure it to the door's frame. This should be enough to allow your door to latch and close properly. If not, you can try tightening the hinge screws on the other side of the door to see if this helps.

If the latch is out of alignment even after lubrication you will require more extreme measures. You can try getting rid of the strike plate using a chisel with a sharp edge to expand the strike plate mortise which allows you to move the strike upwards or downwards. You can also use a steel filing to alter the shape of your strike plate so that it fits better into the mortise. You might want to consider this option if you're concerned about the strike plate coming off while traveling in your RV.

Check the Keyway

If your lock isn't functioning properly, you could be leaving your property open to burglars. The good news is that certain kinds of door lock issues can be solved without the need of professional assistance. This includes a lock that doesn't fit or a lock that sticks when it is turned. If you can identify the issue, Double glazed window you are more likely to be able to repair it yourself.

If your key isn't moving into the lock or turning smoothly It could be having rough areas that need to be smoothed out. A locksmith can do this for you however, it's also an easy DIY project you can attempt at home. Put the key in and move it around, trying to find a spot that's creating friction. If you see any of these spots, use a fine metal filing to smooth the rough spots.

A locked or jammed bolt or latch is another frequent problem. This could be caused by debris or by keys that have broken and stuck itself into the mechanism. You may try using a needle or pin to get rid of the debris but it is recommended to call a locksmith for windows a more thorough inspection and removal of the broken piece.

A deadbolt that isn't extended beyond the strike plate could be an indication of a malfunctioning lock. Over time, the screws that hold the deadbolt in place may become loose and cause it shift. This can make your home more vulnerable to burglars. If the deadbolt continues to shift it is possible to upgrade the hardware.

If you are having trouble with a cylinder that doesn't move when you turn the key, the cylinder may be stuck. If this is the problem, you can use an oil-based fluid to lubricate it. You can also use dry lubricant or WD-40 spray to lubricate and remove any buildup. Keep an ounce of these products handy and apply them frequently to ensure that your locks are in good shape. A lubricated lock is more likely to last longer than one that's not.

Check the Hinges

If your door lock cylinder is turning easily when the door is opened but won't stay locked when you close it, loose hinges are often to be blamed. This is easily fixed. First tighten the hinge screws to ensure that they aren't sagging. If the problem persists you may try removing or adding the hinge's shims' to alter the alignment. These small metal plates are available at hardware stores or online.

You can also sand the edges of the hinge mortises, which are the slots that hold the hinges, to ensure that they are flush with the frame. The latch bolt could be too high or low in the strikeplate. To determine this, place a small amount of lipstick on the latch. Then, you can place a piece of masking tape on the strike plate. When you shut the front door the lipstick will stain any part of the tape it touches. This will show whether the latch is located above or below the hole.

If the latch doesn't work properly with the strikeplate it could be due to dirt or grime. This debris can be cleaned by soaking a q-tip in graphite or silicone spray.

If the issue is still not resolved after applying an oil-based lubricant, the lock cylinder might be seized and need to be replaced. This is a job that should be left to a professional, however, it's not too difficult for someone who knows basic home repairs. When replacing the lock's cylinder, make sure you choose one that has tested and rated by the BHMA to avoid issues with fitting and finish.

The hardware used to lock the door could be unprofessional or poorly made. This type of lock will often require more maintenance than a good lock, and it may not last as long. Upgrade to a higher-quality lock will usually resolve this problem. To ensure that your lock will last for a long time, select a lock with a durability rating of B or higher.

Make sure you check the Strike Plate

A door latch that does not reach the strike plate can cause a variety of problems that range from blocking the door from closing and latching properly to making it difficult to open. Fortunately, it's not as hard to fix as it appears. Gravity, sagging doors, and even foundation movement can cause a misalignment of the latch and the strike plate. Fortunately, simple adjustments are often enough to correct the problem.

If tightening the hinges and applying lubrication to the keyway fails to resolve the issue the strike plate might require to be moved to a new position in order to align with the latch. To do this, first remove the strike plate and mark where the latch makes contact with it. You can use a caulk, lipstick or a strip of masking tape that will stain when you close the door to mark the spot. If the mark is below where the strike plate hole is, this means that the latch is slamming the plate too high. A lower strike plate position will solve the issue. If the mark is higher than the strikeplate hole, it may be necessary to move the strikeplate higher.

Once you've determined the direction in which the strike plate needs to be adjusted, remove the strikeplate from the frame. Place the screws in a secure location to allow you to replace them at a later time. You should also lubricate the keyway of the strike plate to make sure it moves smoothly.

You can apply chalk, paint or lipstick to the latch. This can be done by applying lipstick, paint or chalk to the latch. After closing the door, you can open it to observe where the mark has been left on the latch or masking tape. If the mark is located below the strikeplate, it indicates that the latch is hitting the strikeplate too low. A higher strikeplate position will solve the problem.

To adjust the strike plate, you must remove it from the mortise. Then using a sharp knife, chisel or hammer, make the plate wider so that it can be moved upwards or downwards to align with the position of the latch. After the strike plate has been moved, test the door replacing to make sure it closes and latches easily. Once you've made the adjustments, you'll have to reattach the strikeplate to the frame of the door and fill any old screwholes or gaps with woodfill that matches the rest of the frame.