Single-Cylinder vs. Double-Cylinder Deadbolt Installation for Deltona Homes
The most common request our technicians receive is a single-cylinder deadbolt installation — a keyed exterior thumb-turn on the interior, straightforward to operate, and ideal for most residential entry doors across Deltona. However, homes with sidelights, glass panels close to the lock, or doors that open directly into a garage often benefit from a double-cylinder model, which requires a key on both sides and prevents an intruder from reaching through broken glass to disengage the lock from inside. Our technicians evaluate door construction and glass proximity before making any recommendation, because the right deadbolt depends entirely on your specific entry configuration, not on a general rule of thumb.
For doors already equipped with a mortise lock body — common in older Deltona homes built during the 1980s and early 1990s growth period — we assess whether a deadbolt can be installed alongside the existing mortise lock hardware or whether a full mortise lock replacement or upgrade is the smarter path. Mortise lock systems offer outstanding resistance to kick-in and prying attacks because the lock body is recessed deep into the door edge rather than surface-mounted. Our technicians are experienced with both mortise lock service and standard cylindrical deadbolt work, giving you a complete picture of your options rather than a one-product pitch.


