Residential Deadlocks

Residential Deadlock Locks for Maximum Anti-Jemmy Entry Resistance

When a property requires heavy physical resistance against crowbar levering and frame spreading, residential deadlock locks deliver unmatched mechanical holding power for front, rear, and outbuilding doors. At The Lock Warehouse, we supply industry-benchmark Lockwood 355 and 303 rim deadlocks alongside Lenlok RJP-2 and Carbine assemblies, dispatched within 24-48 hours from our stocked Victorian warehouse. Orders over $149.95 AUD enjoy free Australia-wide shipping ($9.95 AUD flat-rate shipping under $149.95 AUD), backed by our 30-day Australian Consumer Law return guarantee on unmodified hardware. These rugged assemblies remain a preferred choice for heritage restorations, warehouse side doors, and high-risk suburban entries across Australia.

How Lockwood 355 Interlocking Rim Jaws Stop Crowbar Attacks

Unlike a standard horizontal bolt that can be slipped out of its strike if the door frame flexes outward, high-security models such as the Lockwood 355 and Lenlok RJP-2 utilize interlocking rim jaws that rotate and hook directly into an anchored steel strike box. When an intruder attempts to spread the door stile away from the frame using a pinch bar or heavy screwdriver, the rotating steel jaws bind tighter into the keeper, fusing the door leaf and jamb into a single structural unit. Case-hardened steel components inside the bolt head also resist hacksaw cutting, cordless grinder attacks, and heavy impact hammer blows.

Fitting a Surface Mounted Housing onto Thin or Heritage Doors

Older Victorian cottages, solid-plank shed doors, and narrow-stile French doors often lack the thickness required to hollow out a deep internal mortice cavity, making a surface mounted housing the ideal installation choice. Only a single 32mm through-hole is drilled for the exterior rim cylinder tailpiece, while the main die-cast alloy case screws directly onto the interior face of the door leaf. Concealed fixing screws sit underneath the locked cover plate so the body cannot be unscrewed while deadlocked. If you prefer an automatic spring-latching bolt that locks every time the door pulls shut, compare our adjacent residential deadlatch locks range.

Reinforcing Inward and Outward Opening Solid Timber Jambs

Any deadlock is only as strong as the timber it anchors into, which is why our trade kits include heavy-gauge angle and flat strikes designed for solid timber jambs on both inward-opening and outward-opening hinged doors. Using the supplied long coach screws to penetrate past the thin jamb liner into the structural wall stud prevents kick-in frame failure. Optional metal door frames and open-in/open-out conversion strikes are also supported across the 355 and RJP-2 series for steel shed frames. You can also add our Custom Keying Service (SKU: KA) so your new rim cylinder shares the exact same C4 key as your existing house locks.

Meeting Home Underwriter Rules for Insurance Grade Protection

Many Australian home and contents underwriters specify key-operated deadlocks conforming to Standards Australia AS 4145.2 physical security ratings to qualify for policy discounts and full claim coverage, making insurance grade protection a priority after moving house. Dual-cylinder variants lock from both sides with a key so intruders cannot reach through broken glass panels to release the internal knob, while high-visibility green and red lock status indicators show whether the door is deadlocked from across the hallway without walking up to the door leaf. Each trade box includes paper drilling templates, cylinder rosettes, packing shims, and full mounting bolts for straightforward DIY or locksmith fitment. For mobile deadlock fitting across Metropolitan Melbourne and Regional Victoria, contact our trade partner All Secure Locksmiths or phone our team on (03) 9306 6760 or 0421 149 760 (Melbourne, Victoria) for fast technical support, bulk trade pricing, and reliable Australia-wide courier delivery.