High security · Dorset Park
High Security Locks in Dorset Park
You run a home office with client files and equipment, and your insurer has asked what kind of lock is on the door.
In plain words
A high security cylinder is rated by independent laboratory testing that times how long it holds out against picking, impressioning, drilling, prying and wrenching. The lock body and deadbolt carry a separate hardware grade for strength, cycle life and finish. A locksmith reads those ratings for you and matches them to your door, because a rating on the box means nothing if the door frame is thin or the bolt barely enters the jamb. The visit usually ends with a heavier deadbolt, a reinforced strike fastened into the framing and a cylinder whose keys cannot be copied at a kiosk.
How the visit goesYou run a home office with client files and equipment, and your insurer has asked what kind of lock is on the door. The honest answer is the builder's knob lock and a light deadbolt from when the house was new.
High Security Locks
How the visit goes
The bolt, the pocket and the strike
A deadbolt is only as good as how far it reaches and what it reaches into. The locksmith measures the throw of the bolt with the door closed, checks that it fully extends without the door being lifted or pushed, and looks at the pocket it enters in the jamb. A shallow pocket, a stamped strike plate and screws barely longer than a thumbnail are the usual finding on a builder-grade door. Then the frame is examined for splits, soft wood and gaps behind the jamb, since a kick lands on the strike, not on the cylinder.
Keying several doors sensibly
When more than one door is upgraded, the locksmith plans the keying before pinning anything. A home usually wants every exterior door on one key. A business often wants staff keys that open the front and their own area, and one manager key that opens everything, arranged as a small master system on the same patented keyway. Cylinders are pinned on the bench, labelled and fitted door by door, and each key is checked against the doors it should open and, just as carefully, the doors it should not. The written key schedule is part of the handover.
A key plan that survives staff changes
For a business, the handover includes a key schedule showing every cylinder, every key number and who holds it. When someone leaves, their key comes back and is struck off; if it does not come back, you know exactly which doors it opened and can decide whether one cylinder or several should be repinned. Because the keyway is restricted, a departed employee cannot quietly keep a copy. New hires are issued a numbered key against a signature. The plan lives in a folder or spreadsheet, and the locksmith keeps a matching record so the two can be reconciled whenever you like.
High Security Locks
In the van
Hardened cylinder guard ring
Three-inch strike and hinge screws
Key control authorisation card
Graded deadbolt with hardened bolt
Pinning kit and plug follower
High Security Locks
What affects the quote
Condition of the door itself
A solid door that hangs true takes hardware straight away. A dropped, swollen or hollow door may need hinge work, shimming or a recommendation to replace the slab before the lock is worth fitting.
Cylinder rating and format
A patented residential cylinder, a laboratory-rated commercial cylinder and an interchangeable core sit at different points on the scale, and the format that fits your present hardware decides which lines are available.
Hinge and door edge work
Long hinge screws, a hinge-side security stud or repair to a chewed door edge are small items that add up on a door that has been forced before.
What to have ready
- How many exterior doors do you want included?
- Is the door wood, steel-clad, fibreglass or aluminium with glass?
- For a business, who should be allowed to authorise new keys?
High Security Locks: questions
QuestionsWhat actually makes a lock high security?
Three things working together. The cylinder has a second locking mechanism, usually a sidebar released by finger pins or rotating pins, plus hardened steel in the path of a drill, so picking, bumping and drilling take far longer than on an ordinary lock. The deadbolt and strike are heavier and fastened into the framing. And the key is cut on a patented or restricted blank that only an authorised person can have copied. Remove any one and the door is weaker than the label suggests.
Is a smart lock more secure than a high security mechanical lock?
They solve different problems. A keypad or smart lock manages who can enter and when, and many have no keyway to pick. A high security mechanical lock resists physical attack and controls key copying without batteries, apps or connectivity. Many businesses use both: electronic access on high-traffic doors and high security cylinders on rooms that must hold regardless of power. The locksmith helps you match the tool to each door rather than choosing one philosophy.
What is bumping, and does this stop it?
Bumping uses a specially cut key that is struck while under light turning pressure, bouncing the pins to the shear line for an instant so an ordinary cylinder opens. It works on many standard pin tumblers. A high security cylinder needs its sidebar released by separately positioned finger or rotating pins at the same moment, and a bump key cannot set those, so the plug stays locked. It is one of the clearest advantages of the upgrade.
