How to Secure a Door From Being Kicked In

Most people think a door fails at the lock. In practice it fails at the frame. When someone kicks a door, the force travels through the deadbolt into the strike plate, and that plate is usually held by two short screws biting into a thin strip of soft wood. The jamb splits, the door swings open, and the lock never turned out to be the problem.

That is good news, because frames and fasteners are cheap to fix. A weekend and a few well-chosen parts can raise the effort a forced entry takes from a moment to a long, noisy struggle. This guide walks through the upgrades in order of value, the traps that make some "security" products dangerous in a fire, and the New York rules that apply to rentals, co-ops and houses, as of October 2026.

1. How a Kick-In Really Works

A door is a lever. The deadbolt throws a steel bolt into the strike plate, which is mounted on the jamb. The jamb is nailed to the rough framing with thin shims between. When force hits the door near the lock, three things happen in sequence: the screws pull out of the soft jamb wood, the jamb splits along the grain, and the door pivots open on its hinges.

Weak points, in order of frequency:

1. A short-screwed strike plate. Typically half-inch to one-inch screws.
2. A split or rotted jamb. Often hidden under paint, especially in older wood doors.
3. Hollow-core or thin doors. They crack or punch through.
4. Hinges with short screws. The hinge side of the door can fail too.
5. Glass in or beside the door. A broken pane gives access to the lock.
6. Loose frame in the wall. The whole assembly flexes.

Strengthen all of these, not just one. A great lock on a bad frame is a decoration.

2. Inspect Your Door and Frame First

Spend ten minutes on diagnosis.

• Press on the jamb near the strike. Soft or crumbly wood means rot or insect damage.
• Check for gaps between the frame and the wall. If you see daylight or can wiggle the casing, the frame is loose.
• Knock on the door. Hollow sound means hollow core. Solid sound means solid core or wood.
• Look at the hinge screws. If they are short and the heads are stripped, replace them.
• Check for cracks around the strike plate. A hairline crack means previous stress.
• Test the latch. If it hangs up or the bolt does not fully extend, fix alignment first.

If you find rot or splitting, stop and read the carpentry section below. Hardware screwed into rotten wood is theater. For general door maintenance and sealing, see our guide to installing door weatherstripping, which also covers adjusting hinges and strike alignment.

3. Upgrade the Strike Plate

The single best improvement for the money is a heavy-duty strike plate, often a steel box or a long plate that spans several inches along the jamb.

1. Remove the existing strike plate.
2. Inspect the mortise. If it is split, repair with epoxy wood filler or glue and clamp.
3. Position the new plate and mark the holes.
4. Drill pilot holes deep enough for 3-inch screws.
5. Fasten with 3-inch screws that pass through the jamb, the shim space and into the wall stud.
6. Test the latch and bolt. They should engage smoothly without binding.

Longer screws pull the load into the framing, which is much stronger than the jamb alone. Use screws with sharp points and the correct head style to sit flush in the plate.

4. Replace Short Screws Everywhere

Do not stop at the strike plate.

• Hinge screws. Replace at least one screw in each hinge, on the jamb side, with a 3-inch screw that reaches the framing. This also pulls the frame tight to the wall.
• Deadbolt and latch plates. Make sure the faceplate is flush and screws are tight.
• Hinge side jamb. If the hinges are on the outside of a door, consider security hinges or non-removable pins.

Pre-drill to avoid splitting. If a screw spins, fill the hole with glue and toothpicks or wood dowel and re-drill.

5. Choose a Grade 1 Deadbolt

Lock grades come from industry standards. Grade 1 is the highest residential-commercial rating, with the strongest test requirements for strike force and durability; Grade 2 and 3 are lighter.

A good deadbolt costs more than a basic one, but still far less than the cost of repairing a broken-in entry. Keep in mind that a better lock on a weak frame is wasted, so do the frame first.

6. Reinforce the Door and Jamb

For stronger protection beyond a plate, consider:

• Door armor or jamb reinforcement kits. Steel sleeves that wrap the lock area of the door and the strike area of the jamb to prevent splitting.
• A solid-core or metal door. Replace hollow-core exterior doors. Solid-core wood, fiberglass with a solid core or steel doors resist impact much better.
• A continuous hinge or extra hinges. A third hinge in the center helps with heavier doors.
• A reinforced frame. In severe cases, a carpenter can replace the jamb with a stronger one or shim and fasten the frame to the studs through the casing.

If your door is fire rated or labeled, do not drill into the label or alter it without approval. Fire-rated doors have rules and may need to remain intact for insurance and code.

7. Protect Glass, Sidelights and Mail Slots

Glass is a bypass. A thief can break a pane and reach the lock. Options:

1. Security window film. A clear, thick film bonded to glass holds shards together and slows entry.
2. A metal grille or decorative ironwork. Mount it securely on the inside or outside as rules allow.
3. Laminated or tempered glass. Replace vulnerable panes with stronger glazing.
4. Mounting the lock out of reach. Keep deadbolts at least 40 inches from the glass where possible.

A warning on double-cylinder deadbolts

A double-cylinder deadbolt needs a key on both sides. That prevents a thief from reaching through broken glass and turning a thumb latch, but it can trap people inside during a fire. Many codes and fire safety experts discourage them, and some jurisdictions restrict them. If you want a keyed inside lock near glass, ask the DOB, your fire department or a licensed contractor first. Often film or a different door is a safer fix.

8. Security Bars, Barricades and Smart Locks

Door security bars. A bar braced under the knob or against the floor adds resistance. They are good as an added layer at night, and they are not a substitute for a sound frame. Make sure you can remove the bar quickly in an emergency.

Floor-mounted barricades. These anchor into the floor and can resist severe impacts, but they require drilling into the floor and may be prohibited in rentals and fire-rated doors.

Smart locks. They add convenience and logs but are only as strong as the door beneath them. Choose a model that mounts to a Grade 1 deadbolt body, and keep backup keys or codes. Remember that battery failure and Wi-Fi outages are real; make sure the lock opens from inside without a battery or app.

9. New York Rules, Landlords and Boards

Security upgrades touch building rules.

• Renters. Talk to the landlord. In New York City, owners of multiple dwellings have obligations about entry door locks and security, and changes should be coordinated. The NYC Department of Housing Preservation and Development provides information for tenants and owners.
• Co-ops and condos. Entry doors are often controlled by the building for fire rating and appearance. Get written approval, and ask about required finishes and hardware.
• Houses. Replacing an exterior door is generally within your control, but changing size, framing or egress can trigger building rules. See the NYC Construction Codes page and our Do I Need a Permit? page.
• Fire and egress. Every sleeping area and every apartment should have a quick way out. Do not install hardware that requires a key or tool to exit.

Residential remodeling work in NYC, including door replacement, falls under the DCWP's Home Improvement Contractor licensing; see the DCWP checklist before you hire.

Beyond Hardware: Lighting, Landscaping and Habits

Physical security works best with deterrence.

• Keep entries well lit with motion lights.
• Trim shrubs that hide the door from the street or neighbors.
• Avoid leaving packages visible.
• Keep a spare key with a trusted person, not under the mat.
• Know your neighbors. In dense blocks of Union City or Washington Heights, an alert neighbor is a real security layer.

If you are also considering a storm door for added protection and weather defense, read our take on whether a storm door is a smart move for your NYC home.

10. Why a Licensed Contractor Beats Piecemeal Fixes

11. Neighborhoods and ZIP Codes We Serve

Door security needs vary with building type.

• Washington Heights (Manhattan), ZIPs 10032, 10033, 10040: pre-war elevator buildings and co-ops on steep terrain. Heavy original doors and steel frames in many hallways call for work coordinated with the building.
• Windsor Terrace (Brooklyn), ZIP 11218: wood-frame row houses and small co-ops, where older wood jambs commonly need repair before reinforcement.
• Glendale (Queens), ZIP 11385: attached brick homes and two-family houses with separate entries and shared vestibules.
• Rosebank (Staten Island), ZIP 10305: detached homes and row houses, where front, side and basement doors all deserve attention.
• Roslyn (Nassau County, Long Island), ZIP 11576: the Village of Roslyn, with historic homes where original doors and hardware may need careful reinforcement.
• Paramus (Bergen County, NJ), ZIP 07652: ranches and colonials on large lots, with garage and side doors that often go overlooked.

For houses, permit and inspection rules come from your local building department, and in New Jersey from the municipal construction office under the Uniform Construction Code.

12. Next Steps: Get Your Free Estimate

James - Lead Renovation Editor. With over 20 years in renovation and construction, James writes and edits our guides. More about James