Lesson 10: Commercial Locksmithing - Part 5

Door Hardware

Strike plate

During forced entry, the frame that the bolt engages with can break, allowing the criminal to gain access to the building. The extended strike plate is mounted on the frame of the door and helps protect against forced entry. 3” hardened steel screws connect directly to the foundation of the house. To install the extended strike plate you need to chisel it flush onto the frame of the door. Start by attaching it to the door using preliminary screws. Make sure the bolt slides easily into the bolt hole. Readjust the strike plate as necessary. When you are satisfied with the alignment, trace an outline of the strike plate using the edge of your chisel. Now remove the strike plate and chisel out the outline until the strike plate can sit flush with the frame. Using your drill, drill pilot holes before you thread the 3” screws. Test the alignment against to make sure the door closes and the bolt draws smoothly. Use your grinder bit if necessary.

Wrap around plate

Wrap around plates wrap around the deadbolt, bolt, and door to double the strength of the door. The metal wrap protects the deadbolt from ice pick attacks that would dig out the wood around the cylinder or bolt to attack it. The wrap around plate also protects against forced entry attacks that would force the door open by splitting the wood around the bolt. To install a wraparound plate first disassemble and remove the lock from the bolt. Using your chisels, cut away the wood around the bolt faceplate until the wrap around plate sits flush on the door. Assemble the deadbolt back onto the door taking care to make sure the plate remains flush with the door. Once the lock has been assembled, thread the final wrap around plate screws to complete the installation.

Deadbolt lock protector

The deadbolt lock protector encases the deadbolt housing and bolt in a hardened steel shell. A small circle allows for a key to be inserted into the deadbolt to draw the latch, while a hardened steel plate extends over the latch. The deadbolt lock protector guards against all types of physical attacks against the lock and the bolt. To install the deadbolt lock protector you must first mark the door for the mounting bolts. Hold the deadbolt lock protector over the deadbolt and test to make sure the keys work from this position. Mark the holes and remove the deadbolt lock protector. Drill through the door where you marked it. Now assemble the deadbolt lock protector onto the door and bolt the mounting screws to the back of the door.

Latch protector

Latch protectors guard the latch and door edge from physical attacks. Some forced entries occur by wedging a pry bar between the door and the frame to force the door open. This technique typically breaks the latch or the door around the latch to open the door. A latch protector defends against this type of attack. To install a latch protector, mount the device onto the door using small preliminary screws. Close and open the door to check that the latch protector does not interfere with the latching mechanism. By using preliminary screws you can readjust the latch protector as necessary. Once you have ensured that the alignment is correct, mark the location for the mounting screws and remove the latch protector from the door. Drill the holes for the mounting screws and bolt the mounting screws to the latch protector and door.

Cylinder guard

Latch protectors guard the latch and door edge from physical attacks. Some forced entries occur by wedging a pry bar between the door and the frame to force the door open. This technique typically breaks the latch or the door around the latch to open the door. A latch protector defends against this type of attack. To install a latch protector, mount the device onto the door using small preliminary screws. Close and open the door to check that the latch protector does not interfere with the latching mechanism. By using preliminary screws you can readjust the latch protector as necessary. Once you have ensured that the alignment is correct, mark the location for the mounting screws and remove the latch protector from the door. Drill the holes for the mounting screws and bolt the mounting screws to the latch protector and door.

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