How to Secure a Door Against Kick-Ins and Forced Entry
If you’re worried about someone forcing your front door, it’s natural to look for a stronger deadbolt or one of those heavy door bars advertised online. But a forced-entry problem is rarely solved by one piece of hardware. A door is an assembly: the leaf, the frame, the hinges, the lock and the part of the wall that holds everything in place.
Think about a sturdy deadbolt fitted into a frame that’s already splitting near the strike plate. The lock may be excellent, but the frame is not. The most useful security improvements strengthen the weak parts of the whole entrance, rather than just adding another lock to a bad door. That also means being honest about limits. No ordinary household upgrade can promise to make forced entry impossible.
Start with this door security inspection
| What you find | Why it matters | What to do |
|---|---|---|
| Door flexes or has damaged panels | Door leaf may be the weakness | Repair or replace with appropriate secure doorset |
| Frame is split, rotten or pulling away | Locking hardware lacks proper support | Repair or replace the frame professionally |
| Strike plate is loose | Deadbolt may not resist force as intended | Install compatible reinforcement in sound framing |
| Hinges are loose or externally accessible | Hinge-side weakness | Appropriate hinge repair or security features |
| Deadbolt catches or doesn’t extend fully | Improper engagement | Correct alignment and lock operation |
| Door contains nearby glass | Another possible access weakness | Assess glazing and whole assembly |
Police guidance is consistent on this point. West Yorkshire Police recommends sound frames, properly secured hinges and certified complete doorsets rather than relying on individual gadgets. The aim is to make the entrance harder to compromise as a system.
1. Make sure the deadbolt and strike plate engage properly
Before shopping for a new lock, test the one you already have. With the door open, operate the deadbolt through its full travel. Then close the door normally and repeat. You shouldn’t have to lift the door or lean against it to get the bolt into position. If the lock binds only when the door is closed, there may be a frame or hinge alignment issue.
The strike plate is the metal fitting that receives the bolt. Some reinforced strike systems include a backing box or support plate and fasteners that reach appropriate framing. The correct hardware and screw length depend on the lock and construction. Longer screws aren’t automatically suitable beside glazing or in a metal frame. Our security strike plate installation guide covers those considerations in detail.
2. Don’t ignore the frame
A well-made door sitting inside a weak frame isn’t a sound security investment. Look for damaged timber, failed fixings, excessive gaps and evidence that the jamb has shifted. If the frame is badly deteriorated, adding metal plates to the surface may only disguise the need for repair.
On some existing timber entrances, professional frame reinforcement can improve resistance to force at vulnerable points. In the UK, products such as London or Birmingham bars are used for particular frame configurations. Avon and Somerset Police discusses these as possible improvements alongside strong doors and approved locks. A qualified locksmith can recommend what matches your actual frame.
3. Choose a door leaf that suits its job
Hollow-core interior doors are not suitable substitutes for properly constructed exterior doors. If your entrance has thin panels, damaged glazing or a badly fitted leaf, investing in another decorative lock may not help much. When replacement is justified, compare independently tested exterior doorsets that include compatible frames and hardware.
Ask a supplier for the exact security standard and model documentation. In the UK, PAS 24 is one relevant doorset test; other regions use different standards. Our front-door security buying guide explains the differences between common materials and how to assess locking systems.
4. Secure the hinge side appropriately
Loose hinges or damaged attachment points can create a weakness even when the lock side looks substantial. Check for sagging, worn screws and a door that no longer closes squarely. Outward-opening doors may have hinges on the outside and should use suitable hinge-security features, such as approved non-removable pins or hinge bolts where appropriate.
These are installation-specific parts. Don’t assume every hinge needs replacing or that a general-purpose household screw is suitable for a heavy fire-rated door. For more detail, see our outward-opening door security guide.
5. Examine glass panels close to the lock
Glass in or beside an entry door can be attractive, but it changes what the entrance needs to withstand. If a glass panel provides easy access to interior hardware, consider glazing and hardware specified together rather than simply buying a stronger deadbolt.
Laminated glazing may help retain fragments, while selected safety/security films can be appropriate in some assemblies. Neither makes the glass universally unbreakable. A professional can advise whether a replacement panel, secure handle configuration or entirely new doorset makes more sense.
6. Understand what secondary door bars can and can’t do
An interior bar or jammer may add resistance on some compatible inward-opening doors. But it only helps while someone is inside to deploy it, and it must not obstruct emergency escape. If the product slips on your floor, doesn’t fit the door direction or requires awkward removal, it’s a poor choice.
In apartments, shared buildings and fire-rated entrances, additional hardware may be restricted. Read our guide to door jammers and their limitations before relying on a portable barricade.
7. Maintain a safe exit
A door should resist unauthorized entry while still allowing occupants to leave promptly in an emergency. Avoid adding bolts that require searching for an interior key where this would violate local fire requirements. Never brace an occupied room’s only designated exit with furniture or a device that people cannot release quickly.
For fire-rated apartment doors, the assembly’s certification may limit modifications. Ask the building manager or a qualified installer before changing locks, hinges, closers or glazing.
What should you upgrade first?
| Your situation | Priority |
|---|---|
| Door will not close or lock correctly | Repair alignment and lock operation |
| Frame is visibly damaged | Restore or replace sound structural support |
| Hardware is lightweight but frame sound | Consider appropriate tested lock and strike reinforcement |
| Door itself is thin or deteriorated | Assess replacement with secure complete doorset |
| Someone wants a portable brace | Check compatibility and emergency escape before buying |
Frequently asked questions
Will a longer strike plate stop somebody kicking in the door?
Reinforcement can improve a weak part of the assembly if properly fitted, but the frame, door and lock still matter. There is no universal guarantee against forced entry.
Is a steel door always stronger than a wooden one?
Not necessarily. Construction, tested performance, frame and installation matter more than material alone. Both timber and metal doorsets can be designed for security.
Should I install a second deadbolt?
Only if it addresses a real need and is compatible with the door and applicable egress requirements. Fixing a defective existing lock or frame is often the better first investment.
The bottom line: the door that keeps somebody out is the whole door, not just the lock. Spend your money on sound construction and properly installed compatible hardware before collecting extra accessories.
