Skill guide · Security & Self-Defense

Home Lockdown & Barricading Basics

The Security & Self-Defense chapter's Lockdown skill and the Shelter & Structural Safety chapter's Barricading skill are two halves of the same real problem: securing a home fast, and reinforcing it well. This guide covers both, since a rapid lockdown routine and the physical reinforcement behind it work together, not separately.

The lockdown routine: practiced, not improvised

Speed is what actually matters in a lockdown, more than any single piece of hardware. A routine worked out and physically walked through in advance, not figured out for the first time under stress, is what makes the difference. Move through the same sequence every time: lock every door and window starting with the most likely entry points, close blinds and curtains so the inside isn't visible from outside, turn off interior lights that would silhouette anyone moving past a window, and move away from doors and windows once the space is secured. Silence phones so a call or notification doesn't reveal your location, and stay quiet.

Time yourself running this as a drill under normal conditions. A household that has never practiced the full sequence reliably takes several times longer under real stress than a household that has, and every extra minute is a minute the routine isn't providing the protection it's meant to.

Reinforcing the door: the upgrade that actually stops a kick-in

Most residential door frames fail at the strike plate, the small metal plate the deadbolt bolt extends into, because factory-installed strike plates are usually held by two short screws that barely reach the door jamb itself, not the wall stud behind it. A kick concentrates force exactly there. The fix is inexpensive and doesn't require a locksmith: replace the factory strike plate with a heavy-duty, elongated plate secured with four to six screws, and use 3-inch (or longer) screws that bite into the actual wall stud, not just the thin jamb wood. To actually install it, hold the new plate in place over the existing mortise and score its outline into the jamb with a utility knife, then chisel out the mortise deeper and, for an elongated plate, longer than the factory one, checking the plate sits flush with the jamb surface rather than proud of it. Drill pilot holes for all four to six screws before driving them, this keeps the jamb wood from splitting and lets the longer screws go in straight and reach the stud behind it. This single change is one of the highest-leverage, lowest-cost security upgrades a household can make.

For additional reinforcement, a jamb reinforcement bar, a flat steel bar roughly 12 inches long installed along the inside edge of the door frame under the trim molding, spreads impact force across the stud rather than concentrating it at one point. A door bar or floor-to-doorknob brace adds a physical barrier that holds even if the lock itself is defeated: the bar's yoke hooks under the doorknob while its padded foot rests on the floor at roughly a 25-degree angle, about 12 to 18 inches out from the door for a standard 36-inch-high knob, and a light tap seats the foot's rubber pad against the floor to tension it snug, not forced tight. A barricade that secures both the top and bottom of the door provides more resistance than a single point of contact. None of these replace each other; a reinforced strike plate, a solid deadbolt, and a physical bar or brace work as layers, not substitutes.

Warning

Reinforce the frame, not just the door

A steel security door mounted in a weak, unreinforced frame still fails at the frame. The jamb and the stud behind it are what actually resist a kick; upgrading the door itself without upgrading what it's mounted into skips the part that matters most.

Tip

A rubber door wedge covers you where you can't install anything

Everything above assumes a door you own and can modify. A cheap rubber door wedge, driven under the door from the inside, adds real friction against a rented apartment, a hotel or Airbnb room, or a connecting door you have no other control over. It's a light deterrent, not a lock, carpet reduces how well it grips, but it's inexpensive, packs flat in a bag, and it's the one option here that needs no tools and no landlord's permission.

Windows: the entry point most households ignore

A meaningful share of break-ins happen through a ground-floor window, not a door, because standard glass can be defeated quietly and quickly with far less effort than a reinforced door. Security window film is a transparent adhesive layer that doesn't stop glass from cracking but holds the shattered pieces together, turning what would be a near-instant break into a process that can take a minute or more of sustained, loud effort, which is often enough to make an intruder move on. Security bars are a more visible, more absolute option, best reserved for genuinely vulnerable windows like basement or ground-floor openings not otherwise overlooked; sliding windows and doors can also be fitted with a simple track-mounted bar or dowel that prevents the sash from being forced open, cheaper and less visually intrusive than full bars.

Warning

A basement or bedroom window is very likely a required fire-escape opening, and bars on it need a real interior release

Basements and sleeping rooms are required by code to have at least one working emergency escape window, and fixed security bars on that exact window turn a security upgrade into a real fire death trap: roughly 25 people die or are injured every year in fires where window bars blocked their escape. If a window you're considering bars for is also a bedroom or basement egress window, the bars must have a keyless, quick-release mechanism operable from inside without any tool, key, or special knowledge, mounted no higher than 48 inches, not a padlocked or bolted-shut design. Confirm this before installing anything, not after.

Quick Reference

Weak point	Fix	Relative cost
Short-screw strike plate	Elongated plate, 4-6 screws, 3"+ length into the stud	Low
Unreinforced door frame	Steel jamb reinforcement bar behind the trim	Low-moderate
Door held by lock alone	Floor-to-knob brace or top-and-bottom barricade	Low-moderate
Standard window glass	Security film (holds shattered glass together)	Moderate
Vulnerable basement/ground window	Security bars or track-mounted sash bar	Moderate

Full checklist:

Full lockdown sequence written down and physically walked through as a timed drill
Strike plates upgraded to elongated, multi-screw plates with screws long enough to reach the stud
Jamb reinforcement bar and/or door brace installed on primary entry doors
Ground-floor and basement windows identified and fitted with film or bars as appropriate
Sliding windows/doors fitted with a track bar or dowel
Blinds/curtains and interior light plan included as part of the routine, not an afterthought

Sources

Strike plate and door frame reinforcement: Barry Bros Security; Armor Concepts
Door bars and barricade systems: Premier Body Armor
Lockdown sequence and principles: NIH Office of Research Services; Oregon State University
Window security film and bars: Vivint; SecurityMan
Strike plate mortise-chiseling and pilot-hole installation technique: Silver Eagle Locksmith
Floor-to-doorknob security bar angle and setup: Master Lock; Brinks
Rubber door wedge effectiveness as a supplementary, tool-free option: Off Grid Survival
Window security bars as a fire-escape hazard, annual death/injury estimate, and the IRC keyless quick-release requirement for egress windows: InterNACHI; Engineer Fix