It’s quite useful to have two locks in the door separating the house/apartment from the surrounding world but use just one of them. Locks happen to break, although that’s quite rare. If one of the locks starts malfunctioning you can just stop using it and use the other one until you fix the first one.
What locks should a front door have?
Front Door Locks for uPVC or Wooden Front Doors
We recommend a 5-lever mortice deadlock or a Euro lock cylinder as the night latch doesn’t offer such a high level of protection on its own.
Why do doors have double locks?
Some door locks are designed to be turned twice for added security. Sometimes they are an anti picking feature because after you pick the lock and turn it, the pins will reset and you will have to pick it again.
Does home insurance cover door locks?
A good key insurance policy will include cover for your door locks too. This means, if a lock has broken or been damaged by an intruder trying to get into your property, the lock repair or lock replacement will be covered by your insurance.
Can you lock a door from both sides?
You can lock/unlock from both sides, but when that INSIDE key is removed from keyhole, then the OUTSIDE can never unlock, even if the OUTSIDE side engaged the lock.
Are double keyed deadbolt locks illegal?
In the U.S., there is no single comprehensive law against dual-cylinder deadbolts. Individual cities and states have local property and fire codes that may prohibit the use of dual-cylinder deadbolts. The code may prohibit the use of dual-cylinder deadbolts in some buildings and allow them in others.