In most forced entries the jamb splits at the strike plate, not the door. A reinforced strike plate with three-inch screws into the framing is the cheapest and most effective upgrade available. Laminated glass in sidelights and a quality deadbolt are the next two.
Most residential door security spending goes to the wrong place. People buy a heavier door and a more expensive lock, and neither addresses the actual failure mode.
When a residential entry door is forced, what gives way is almost always the jamb at the strike plate. The deadbolt stays locked, the door stays intact, and the thin pine jamb splits around the two short screws holding the strike.
Ranked by effectiveness per dollar
| Upgrade | Cost | Effectiveness | Notes |
|---|---|---|---|
| Reinforced strike plate, 3 inch screws | $15 to $40 | Very high | The single best value in door security |
| 3 inch screws in the hinges | $5 | High | Same principle on the hinge side |
| Quality Grade 1 or 2 deadbolt | $60 to $200 | High | Grade matters more than brand |
| Laminated glass in sidelights | $300 to $700 | High | Cannot be cleared quickly to reach through |
| Multipoint lock system | $300 to $900 | High | Engages the frame at three points |
| Door jamb reinforcement kit | $60 to $150 | High | Steel channel over the full jamb height |
| Solid core or steel slab | Included in door cost | Moderate | Rarely the failure point |
| Smart lock | $150 to $450 | Neutral to moderate | Convenience, security depends on the model |
| Chain latch | $10 | Very low | Defeated by a shove, largely symbolic |
The strike plate fix in detail
A standard strike plate is a small piece of stamped steel held by two three-quarter inch screws that bite only into the door jamb, which is typically a three-quarter inch piece of pine. Behind that jamb there is an air gap, then the structural framing. A kick transfers all its force into those two short screws in a thin board, and the board splits. The fix is a longer strike plate, ideally one that spans several inches vertically, fastened with three-inch screws that pass through the jamb, cross the shim gap, and bite into the king stud behind. Now a kick has to break framing lumber rather than a thin pine jamb. The parts cost under forty dollars and the installation takes fifteen minutes. We install these on every entry door as standard.
The sidelight problem
A glass panel beside the door means someone can break it and reach the interior thumbturn on your deadbolt. There are three responses and they are not equally good. A double-cylinder deadbolt requires a key on both sides so there is no thumbturn to reach, but many jurisdictions restrict these because they impede escape during a fire and you must keep a key accessible at the door, which partly defeats the purpose. Laminated glass in the sidelight is the better answer: it is two panes bonded to a tough interlayer, so when struck it cracks but holds together and cannot be cleared quickly to reach through. The third approach is design, placing the sidelight far enough from the lock that reaching it is impractical, which is a decision made before ordering.
What deadbolt grade means
Deadbolts are graded by ANSI/BHMA standards. Grade 3 is basic residential, Grade 2 is heavy-duty residential, and Grade 1 is commercial. The grade reflects tested cycles, strike impact resistance and bolt strength, and it is a far more useful indicator than price or brand. A Grade 2 deadbolt is adequate for most homes and a Grade 1 is a meaningful upgrade. Also check the bolt throw, which should be at least one inch, and confirm the bolt actually extends fully into the strike without binding, because a deadbolt that only throws halfway because the door has sagged provides a fraction of its rated protection.
Ranges reflect typical Capital Region projects and are for planning only. Every Sundog quote is written, itemized, and free.
Frequently asked questions
What is the best way to make a front door more secure?
A reinforced strike plate fastened with three-inch screws that reach the framing behind the jamb. It costs under forty dollars and addresses the actual failure mode, which is the jamb splitting rather than the door or lock failing. Add three-inch screws in the hinges for the same reason on the other side.
Are sidelights a security risk?
They are a consideration worth addressing rather than a reason to avoid them. Someone can break a sidelight and reach the interior thumbturn. Laminated glass is the best answer because it holds together when struck. Double-cylinder deadbolts also work but are restricted in many jurisdictions for fire escape reasons.
Do smart locks improve security?
Not inherently. They improve convenience and access control, which has real value, and they eliminate the risk of a key under the mat. Their physical security is whatever the deadbolt mechanism they use is rated for, and some inexpensive models are poor. Check the ANSI grade of the lock mechanism, not the smart features.
Is a steel door more secure than fiberglass?
Marginally, and it rarely matters, because the slab is almost never what fails in a forced entry. Both steel and quality fiberglass doors are far stronger than the jamb they hang in. Spend the money on the strike plate and the jamb rather than on the slab material.
What is a jamb reinforcement kit?
A steel channel that fits over the door jamb along most of its height, distributing the force of an impact across a long span rather than concentrating it at the strike. Combined with long screws into the framing, it is one of the most effective upgrades available and runs sixty to a hundred and fifty dollars.
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