A Whitco strike plate is the metal plate in your door frame that receives the latch or bolt when you close the door. In trade terms it is the keeper that the lock catch engages, so a worn or misaligned one stops the door latching.
This guide explains how it works, where it is used and what to check before you replace it.
Key points
- The strike plate and lock catch work as a pair, so a door that will not latch can be a frame problem rather than a lock fault.
- Match the brand, latch type and plate shape when replacing; Whitco and other makes are not always interchangeable.
- Houses settle, so realigning a plate is often a quick fix before you replace any hardware.
- Replacing a whole lock in Sydney typically costs about $255 (range $140–$400).
How a Whitco strike plate works
The plate gives the latch or bolt a hardened opening to sit in, so the door stays closed and the frame is protected.
- Latch entry: the angled latch slides over the lip of the plate and springs into the opening as the door closes.
- Bolt seating: a deadbolt or deadlatch guard bolt sits in the opening and transfers force to the frame rather than the screws alone.
- Frame protection: the metal plate stops the latch chewing out soft timber over years of use.
- Alignment: the opening must line up with the latch height, and a door that has dropped on its hinges will miss it.
- Fixings: loose or short screws let the plate shift, so check them first when a door starts catching or rattling.
Lock catch vs strike plate
- Lock catch: the general term for the part of the lock that holds the door shut, including the latch bolt.
- Strike plate: the frame-side part the catch engages; people often use both words for the same pairing.
- Door lock latch: the spring-loaded bolt in the lock body that moves in and out of the plate.
- Sticking door: a catch that scrapes the plate usually means the door has shifted, not that the lock is faulty.
- Cheap rental hardware: thin stamped plates bend easily, and replacing one with a sturdier plate can improve fit and security.
Where a Whitco strike plate is used
- Entry doors: fitted to the frame opposite the lockset, usually matched to the handle brand.
- Internal doors: bedroom and bathroom doors with a simple latch need a plate to hold them closed.
- Security screen and flyscreen doors: the plate on the frame engages a latch, as covered in our screen door locks guide.
- Garage side doors: older timber frames wear around the plate and may need a repair before a new one will hold.
- Window and sliding hardware: related keepers appear on frames, see our window locks guide.
Strike plate and lock catch costs and specs
| Item | Detail (Sydney, Oct 2026) | Why it matters |
|---|---|---|
| Strike plate swap or realignment | Not separately listed (indicative — get itemised quotes) | Often done during another lock visit |
| Basic lock replacement | AUD 140–400, typically 255 | Worth it when the latch itself is worn |
| Re-key, per lock | AUD 52–140, typically 75 | Changes keys without touching the hardware |
| Deadbolt installation | AUD 170–460, typically 290 | A new deadbolt needs a matching strike plate |
| Locksets standard | AS 4145 | Ask your locksmith which rating the lock meets |
Related terms
- Keeper: another name for the plate or catch on the frame that holds the latch.
- Backset: the distance from the door edge to the lock centre, which must match the plate position.
- Sliding door lock: a hook or bolt for glass doors; see sliding door locks.
- Security door lock: a heavier lock with reinforced keepers; see security door locks.
Whitco strike plate FAQs
How do I fix a lock catch that will not latch?
Check the screws on the hinges and the plate first, then see whether the latch lines up with the opening. A plate that sits slightly high or low can often be repositioned. If the frame timber is chewed out, book a licensed locksmith or carpenter to repair it.
Can I replace a Whitco strike plate with another brand?
Sometimes, but not always. Plate shape, latch type and screw positions differ between makers, so a mismatched plate may sit poorly or weaken the fit. Take a photo of the existing plate and the latch to your supplier, or ask a licensed locksmith to match it.
Does a stronger strike plate improve security?
Yes, to a point. A sturdy plate with long screws into solid framing helps the door resist forceful entry, but it only works if the door and frame are sound. A deadbolt installation in Sydney typically costs about $290 (range $170–$460).
For the wider picture, read our types of door locks guide, or book a licensed locksmith to check and replace your hardware.
