Before one can answer that question satisfactorily, it is important to first know what the locks are and how they differ from each other. First, we will look at the deadbolt. There are two different forms of deadbolt, which are both deemed by locksmiths as providing excellent protection against drilling, lock picking and force.
One type of deadbolt has a lock and key. The deadbolt is fitted directly above the door knob. A hole needs to be cut out of the door so you will probably need to employ a qualified locksmith with the proper tools to undertake this task for you. Once fitted, the key to unlock it is on the outside of the door. The inside of the door will have a manual knob that you turn to lock the door. Therefore, if you are outside and you lock the door when you leave, the deadbolt on the inside will turn, keeping the door locked until you return, turn the lock again to open it. The other type is similar but has no lock on the outside. Both types are used as an extra form of security used in conjunction with the normal door lock - either in the knob or on the handle of the door.
The mortise lock has been around for well over 100 years and is still popular with many people today. The lock is inserted into the door by cutting out part of the door and inserting a cylindrical tube and tumbler, ensuring that the knobs are flush on either side of the door. Normally, the door will be custom fit for the mortise lock to ensure maximum fit and security. Again, it is recommended that you get a qualified locksmith to carry out the work. It is a complex job which requires specialist tools for it to be executed correctly - if done incorrectly, it could potentially ruin your front door.
Mortise locks are generally more likely to be found in older buildings although many homes still have them today. They remain popular because they are tough, durable and have stood the test of time.
The decision of whether you need both types of lock will probably depend on your individual circumstances. Factors such as locality, type of residence and additional security fittings such as CCTV may have a bearing on the level of door security you feel you may need. If you are unsure about your needs, you should contact a professional locksmith who will not only give you good advice - they will have the products and expertise to provide you with an all round service.
When it comes to getting the best locks you do not want to take any chances with a novice but want a company that has distinguished itself by the quality of its product and service. One such company is Arties Hardware and Locksmith store in New York. Arties has over 85 years experience of providing high quality products and locksmith services to customers.