Most security conversations about doors start with the lock. The lock is the mechanism everyone can see and name. It’s also the mechanism that a forced entry attack often bypasses entirely.
The hinge side of a door is structurally simpler than the lock side. Two or three hinges, each with a barrel and pin. On an outward-opening door where the hinge barrel is exposed externally, a standard hinge with a removable pin is a vulnerability that exists entirely independently of the lock quality.
Door security hinges solve this. They’re the fix that gets skipped because nobody looks at the hinge when they’re thinking about security.
What Security Hinges Do Differently
A standard butt hinge has a removable pin. On an inward-opening door, the pin is internal and inaccessible from outside. On an outward-opening door — a common configuration for front entries in New Zealand homes — the barrel is external and the pin can be driven out.
Quality security hinges incorporate non-removable pins and interlocking leaves — features that prevent hinge separation even on outward-opening doors where the barrel is externally visible. When specifying door security hinges, confirm these features are present in the product rather than assuming the ‘security’ label covers them.
For outward-opening external doors, this isn’t a theoretical upgrade. It’s the fix for an actual vulnerability that exists regardless of how good the deadbolt is.
When to Shop Digital Door Locks at the Same Time
Shop digital door locks alongside security hinge upgrades — the two are natural companions in any door security review.
The hinge upgrade addresses the structural vulnerability. The digital lock addresses the access management problem. Together, they cover both categories of risk that a residential entry door faces.
Doric’s DE10 and DE20 digital locks replace the standard entry lockset — cylinder, handle, and all — with a fingerprint, Bluetooth, passcode, and card access system at $399.50 including GST. Fitted on a door with properly specified security hinges, the entry point is secured at both the structural and access management levels.
The Strike Plate Question
While the hinge side gets attention, the strike plate — the metal plate recessed into the door frame that the latch and deadbolt extend into — is the other structural element most homeowners have never thought about.
A standard strike plate uses short screws that penetrate only the door jamb. Under a kick-in attempt, the jamb splits and the plate pulls through regardless of how good the lock body is.
A reinforced strike plate with longer screws driven into the structural framing behind the jamb transfers the load to the structural timber rather than the thin jamb facing. The door becomes substantially harder to force from the lock side — which, combined with security hinges on the hinge side, means both structural failure modes are addressed.
Frequently Asked Questions
What are door security hinges and do I need them?
Security hinges incorporate non-removable pins and interlocking leaves — features that prevent hinge separation even on outward-opening doors. For inward-opening doors, standard hinges are generally sufficient. For outward-opening external doors, security hinges are a meaningful upgrade.
Can I upgrade to security hinges without replacing the door?
Yes — most security hinges are manufactured to standard dimensions that match common hinge mortice sizes. The swap is typically a direct replacement. A carpenter or joinery installer can confirm fit before ordering.
What does ‘shop digital door locks’ mean in practice?
Start with the door: does it hang correctly, does the latch engage cleanly without lifting the handle, are the hinges secure? If yes, the digital lock installation is straightforward. Doric’s DE10 and DE20 install into standard 60mm or 70mm backset bored hole configurations — confirm your door’s measurement before ordering.
Do security hinges come in different finishes?
Yes — most manufacturers offer security hinges in standard residential external door finishes: satin stainless, polished stainless, and powder-coated options. Match to the existing hardware for a coherent appearance.
The Three-Point Check
Before any lock upgrade, three checks: hinge condition and specification, strike plate fixings, door hang and latch engagement. These three points tell you the actual security state of the entry.
Door security hinges address the first. A reinforced strike plate addresses the second. A digital door lock addresses access management at the third. All three cost less together than a locksmith call-out after the fact.
Doric New Zealand stocks door security hinges, digital door locks, sliding door locks, and a full range of residential and commercial door hardware. Browse at doric.co.nz.
