Door Security Devices, Ranked: What Stops a Kick-In, What’s Theater

You want the door to hold, not a lock that survives while the frame lets go around it. That’s a fair ask and a cheap one, because a door fails in a set order and you can shop for that order.

This is a ranked shopping list for a front door, a back door and a patio slider. Nothing on it replaces the door. Most of it needs no drill.

Door security devices that stop a kick-in take the load off the two short strike screws: a strike plate kit with 3-inch screws first, a reinforcement lock, then a floor brace; alarms cover the glass.

We sell every device on the list, so read the ranking as a shop’s opinion. The alarm at the end is our TremShield Vibration Sensor Alarm, $29.99, which sticks to a pane and answers the first pry with a 125 dB siren. It earns its place on a door with glass in it or beside it. The hardware comes first.

The test behind the ranking

A kick lands near the handle. The deadbolt is thrown, so the force runs through the bolt into the strike plate, and from the plate into two short screws in a strip of pine trim, the jamb. The pine splits, the plate tears out, and the door swings in with the bolt still extended. The lock did nothing wrong. It was screwed to a thin strip of pine.

So each device gets one question: what does it do about that split? Jamb fixes first. Then devices that hold the door once the jamb is gone. Then alarms, which don’t fix the frame but make the attempt loud. The full mechanics are in why doors get kicked in. This page is the shopping list.

Door security devices, ranked

The first two are door reinforcement in the strict sense: they change what the frame can take. Everything after them works around the frame.

1. Door Strike Plate Kit, $24.99 (drills)

Door reinforcement starts at the strike plate, because that’s where the split starts. The Door Strike Plate Kit swaps the thin factory plate for a heavy-gauge steel one and the two short screws for six 3-inch hardened screws. Those screws pass through the jamb and the gap behind it and bite into the wall stud, so a kick has to move the framing of the house, not a strip of trim. Longer screws for the hinge nearest the lock come in the kit too.

It fits standard residential deadbolts and frames, keeps your existing deadbolt, and installs in about ten minutes with a drill. Tonight’s version: back one screw out of your current strike plate. If it’s a short factory screw, three-quarters of an inch or so, this is your first purchase.

2. Door Reinforcement Lock, $24.99 (drills)

The Door Reinforcement Lock adds a second anchor that doesn’t depend on the deadbolt. It mounts on the frame side, beside your existing lock, with a wide steel plate screwed into the jamb. Flip the brace down and the door won’t open from outside: not with a bump key, not with a card on the latch, not with a shoulder. Flip it up in the morning.

It’s set from inside, so it covers the hours you’re home. It fits standard in-swinging doors, installs in about five minutes with a 1/8-inch drill bit, and leaves only small screw holes that take a dab of filler if you rent.

3. Adjustable Door Security Bar, $34.99 (no drill)

A door brace is the answer for a door you can’t drill, or won’t. The Adjustable Door Security Bar stands with its padded head under the door handle and its foot on the floor, so a shove on the door travels down the bar into the floor instead of into the strike plate. Nothing screws in. It telescopes from 17 to 50 inches and locks at length with a push pin.

It works on standard interior and exterior hinged doors. Check the swing: a floor brace needs a door that swings toward it, or it has nothing to push against. Set it before bed, lift it away in the morning. That’s the trade for not drilling: the bar is a night device, the strike plate kit is an always device.

4. The patio slider: the same bar, head off, in the track

A sliding door is held shut by one small factory latch. Take the padded head off the same bar and lay it flat in the bottom track against the closed panel. The bar fills the space the panel needs to travel, so a picked or pried latch gets nobody anywhere. It lifts out in one motion when you want the patio, and fits most aluminum and vinyl patio frames.

What a track bar can’t do is hold the panel down. Given enough clearance above the panel, someone can lift it up and out with the bar still in place. That gap belongs to the alarm on the glass.

5. French Door Lock Bar, $24.99 (no drill)

French doors meet in the middle with no post between the leaves, and plenty of pairs swing outward, where a floor brace has nothing to push against. The French Door Lock Bar skips the floor and the frame. It’s a short metal bar with a hook at each end and a row of pin slots. Drop one hook over each interior handle, set the pin snug, and neither handle can turn, so neither leaf can be levered open.

Check your handles before you order: both leaves need an interior lever or knob at about the same height, or the hooks have nothing to sit on. It’s set from inside and lifts off in seconds. It does nothing for the glass. French doors are mostly glass.

6. The warning layer: Door Stop Alarm, $16.99, and an alarm on the glass

Everything above holds the door, none of it makes noise, and the braces only work while you’re home to set them. Two devices cover the rest.

The Door Stop Alarm is a rubber wedge with a 120 dB siren inside. Slide it under an inward-opening door (it needs about a 0.75 inch gap) and a push on the door does two things at once: the wedge digs in, and the siren goes off. It runs on one 9V battery, not included, has low, medium and high sensitivity settings, and switches off to become a plain doorstop.

Then the glass. A pane in the door, a sidelight, a slider, a French pair: a stranger can work any of those without touching the lock, and no plate or bar notices. The TremShield Vibration Alarm sticks to the inside of the pane and answers a pry or a knock with a 125 dB siren while the person is still outside. It stays armed after you leave. A sensitivity dial lets you set it once, so a truck going past doesn’t trip it and a pry does. No app, no Wi-Fi, no monthly fee.

7. Portable Travel Door Lock, $19.99 (no drill)

Some doors aren’t yours: a hotel room, a rental, a dorm. The Portable Travel Door Lock is a flat piece of metal that slides into the strike pocket with the door open. Close the door, drop the bar, and the door is braced from inside against the frame. A key or keycard in the hallway doesn’t open it, and lifting the bar lets you out. It fits inward-swinging doors with a standard strike plate, not outward or sliding doors, and leaves no marks. Last on the list because it’s a travel tool.

Which door security device stops what?

“Drills?” means screws go into the door or the frame.

The theater tier: what doesn’t change a kick-in

Three things people buy for a door that leave the kick-in where it was. Each is good for something else.

A chain lock on short screws

The chain’s keeper is held by short screws in the door and the trim. A shove loads the whole door onto those screws, and the trim side is the same soft wood that fails under the deadbolt, so the chain goes with it. What it’s good for: opening the door a few inches to talk to someone you didn’t expect. That’s a real job. Holding a kicked door isn’t its job.

A security sign with nothing behind it

A sign is a sentence about the house. If it’s true, it does something no device on this list can: it can be seen from the walkway before anyone touches a door. If it’s a bluff, there’s nothing behind it the first time the door is pushed. What it’s good for: put it up after the alarm is on the glass. Then it’s a description.

A deadbolt upgrade on an unreinforced frame

The bolt is the part that survives a kick-in. Buy a heavier one and mount it over the same two short screws, and you’ve upgraded the part that wasn’t failing. What it’s good for: a lock that’s worn, a key you don’t control, a bolt that doesn’t throw all the way. Do the strike plate first. Then the deadbolt has something to hold onto.

What does an anti-theft door security system look like on a real house?

An anti-theft door security system, for a normal house, is three layers: something that fixes the frame, something that holds the door when the lock is beaten, and something that makes noise. Not every door needs all three.

• Front door. Strike plate kit, then the reinforcement lock for nights. If there’s a pane in the door or a sidelight beside it, an alarm on that glass.
• Back door. The same two, and this door gets them first if you’re staging, because the street can’t see it. The bar if you can’t drill.
• Patio slider. The bar in the track, and an alarm on the glass for the lift.
• French doors. The lock bar across the handles, and an alarm on the glass.
• Apartment door. Bar, door stop alarm and travel lock, all no-drill. The renter’s version of this list is in apartment door security.

All of it lives in the door security collection.

Door security FAQ

Which door security device should I buy first?

A strike plate kit with 3-inch screws. A kicked door fails at the jamb around the deadbolt’s strike plate, not at the lock, and the kit anchors that plate into the wall stud instead of the trim. It costs $24.99, takes about ten minutes with a drill, and you keep your existing deadbolt.

Do door security devices work without drilling?

Yes. A floor-to-handle security bar, a French door lock bar, a door stop alarm, a portable travel lock and a stick-on vibration alarm all work with no screws. The bars and the travel lock are set from inside, so they cover the hours you’re home. The vibration alarm on the glass is the no-drill device that stays armed after you leave.

Does a door brace work on a sliding glass door?

Yes, if the head comes off. The Adjustable Door Security Bar lies flat in a slider’s bottom track with the padded head removed and fills the space the panel needs to slide, so the door stays shut even if the latch is picked or pried. It doesn’t hold the panel down, so given enough clearance a slider can still be lifted up and out. A vibration alarm on the glass covers that.

Is a chain lock any use?

As a way to open the door a few inches and talk, yes. As a way to hold a kicked door, no: the chain’s plate is held by short screws in the door and the trim, and the trim is the same soft wood that fails under a kick. A door reinforcement lock or a security bar does the holding job a chain can’t.

Does a reinforced door still need an alarm?

If the door has glass in it or beside it, yes. Reinforcement holds the door shut. It does nothing about a pane, a sidelight or a slider, which can be worked without touching the lock, and it makes no sound. A vibration alarm on the glass fires the moment the pane is pried, and it keeps working while you’re out.

The glass is the last layer, and the 6-pack covers it

Walk to each outside door tonight and count the glass: a pane in the front door, the sidelight beside it, the slider, the French pair, and the windows within a step of each door. Once the hardware turns a stranger away from the lock, those panes are what’s left, and each one takes an alarm.

A front door with a sidelight, a slider and the windows beside them reach six fast, and at six the 6-pack at $99 is the buy: $16.50 per alarm instead of $29.99, $80.94 saved against six singles, with two free no-drill window locks in the box and the Home Security Guide as a PDF. Free US shipping, 30-day returns. Do the strike plate this weekend, put the alarms on the glass the same afternoon, and the door is settled.