More about deadbolts on external websites:ĭoorknobs and door levers are very similar, the key difference being their shapes. Offers the best levels of security for brute force physical attacksĬan become hard to use if a house shifts/settles over timeĭouble-sided deadbolts can be a fire hazardĭouble-sided deadbolts are actually two locks & lock rekeying will require both cylinders be rekeyed to work with the same key Doors that have deadbolt locks are much harder to kick in as the bolt goes much further into the frame when compared to a lever lock or doorknob lock.īelow are just a few pros and cons of deadbolt locks. Homes that have only a doorknob or door lever lock on an entry door are encouraged to contact their nearest locksmith and install a new deadbolt lock to enhance the security of the door. Most homeowners and businesses will be relying on a deadbolt lock to keep them secure from intruders. That’s because there isn’t a flip turn they can use, instead, they are greeted by the same lock as is on the outside. With double-sided deadbolts, intruders can’t operate locks if they reach inside, even if they get their hand through a broken window. Double-sided deadbolts are used frequently on business doors and home front doors near a glass entry, as burglars often break a window and reach inside to unlock a lock. This is the reason double-sided deadbolts cost more than single-sided deadbolts, because there are actually two separate lock cylinders instead of just one.ĭouble-sided deadbolts often pose fire-related concerns for those who are seeking to exit a burning building but can’t because they don’t have keys to unlock the door from the inside-out. Many think that double-sided deadbolts are just one lock, but it’s actually two separate locks that are fitted on both the inside and the outside, instead of a flip turn on the inside. Double-sided deadbolts are different than single cylinder deadbolts because instead of being able to be locked or unlocked from the inside with a thumb-turn device, they must be operated with keys from either side. Double-sided deadbolts are actually two separate locks, but they are often installed on businesses and homes where locks are near windows. Single-cylinder deadbolts have a lock on the outside of the door with a keyhole for operation, and a flip turn on the inside for locking and unlocking. Deadbolt locks are separate from doorknob locks, and often come in either single cylinder or double cylinder variants. Deadbolts often offer superior levels of protection over their doorknob and lever counterparts of equal security rating. What is a deadbolt?Ī deadbolt lock, or dead bolt (deadlock), is a lock that is operated with a key and comprised of a “square” shaped latch (we cover latches later). We will also go over information about door levers, and how they’re different but similar to doorknobs and deadbolts. First, we will cover definitions of both, then we will cover some of the pros and cons of each. And for more door lock options, see our complete door lock ratings of over 100 models.In this article, we are going to go over the differences between a deadbolt and a doorknob lock. To learn more about our door lock tests, check out our door lock buying guide. You might also be interested in our home security system ratings. CR members can click on each model name for detailed ratings and reviews. We’ve also included four models to skip that performed poorly in our physical challenges and/or our tests specific to smart locks. The list has models from Bosma, Eufy, Kwikset, Medeco, Schlage, and Yale. “When this is the cause, replacing the included strike plate with a reinforced strike, which costs as little as $10, improves the lock’s resistance to kicking by magnitudes.”Īfter putting dozens of locks to the test, we’ve selected six of the best from our door lock ratings. “In our brute-force kick tests, the cause of failure is more often than not the short screws used to attach the strike plate to the door frame,” says Misha Kollontai, CR’s test engineer for door locks. They repeat the test eight times, with the ram raised to increasing heights-or until the lock fails. That’s why CR engineers conduct kick-in tests using a custom-built jig that swings a 100-pound steel battering ram against a locked door. But even if you’re diligent about locking up, you need a good deadbolt to thwart thieves. Most burglaries involve criminals forcibly entering your home, according to Federal Bureau of Investigation statistics-and that includes coming through your front door.
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