Door Security - Deadbolts - Install - Template - Drill - Spring Latch Plate - Strikeplate
Regardless of the strength of your doors, an intruder can still gain entry if the locks you use are not adequate. Since there are several standard measurements for locking mechanisms, the bored holes on your door and frame may not always match the new lock to be installed. When possible, try to match the holes or enlarge existing holes. There is hardware available that aids in adaptation to existing holes. If all this fails, you will need to install a new door.
Four commonly used lock systems are described below and illustrated here. I recommend installing the key-in-knob or the deadbolt for the best security and the most ease for the do-it- yourselfer.
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Key-In-knob locks. These are the most common exterior door locks, but they can be easily jimmied. Better ones have a hardened steel pin with the beveled latch. This is called a deadlocking latch. - Deadbolt locks. These are an excellent way to add entrance security. Look for a bolt of at least one inch; a rotating steel pin within the bolt for hacksaw resistance; and a free-spinning brass cover over the outside cylinder which resists wrenches.
- Full mortise locks. Almost always these have to be installed by a professional locksmith. They offer double lock protection, including a deadbolt.
- Rim-mounted locks. These are sometimes called “vertical deadbolts.” They mount to the interior surface of the door and serve as a good second lock because of their ability to resist prying.
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