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Composite Door Lock Replacement Composite doors provide a robust level of security to keep you and your family secure from intrusion. However, as with all doors they can warp or swell over time, creating problems with the locking mechanism. The most frequent issue is when the cylinder lock gets sticky. This is usually due to the lock not properly lubricated. A Locksmith can repair, service and replace the door cylinder to restore your door to working. Damaged Cylinder If your l