Door security: the complete guide

Why the door is the primary entry vector

Most residential break-ins go through a door. The reason is rarely that the door itself is weak. It is that the frame splits at the strike plate on the first hard kick. The lock holds and the slab holds, but the thin pine that retains the strike plate fails.

Consumer Reports' lock testing program found that switching to a reinforced box strike with longer screws materially improved kick-in resistance across every lock they tested^[1]. That single change is the highest-return upgrade available on a typical Quebec home.

The three attack methods

1. Kick-in or forced entry. This is by far the most common method. It is defeated by reinforcing the frame side: strike plate, jamb, and hinge area.
2. Pry or jimmy attack. A pry bar is slipped between the door and frame. A one-inch deadbolt throw combined with a reinforced strike resists the leverage.
3. Lock bypass through picking, bumping, or drilling. This method is far less common in residential break-ins. Any modern Grade 1 or Grade 2 deadbolt with a UL 437 or BHMA-certified cylinder defeats most attempts^[2].

Most homeowners worry about the third method. The available data points to the first as the priority.

The upgrade order

The four sections below are arranged in the order most homeowners should approach them.

1. Strike plate reinforcement — the recommended starting point. About $20–$30 of hardware and a quick install produce the largest single improvement in kick-in resistance.
2. Full door reinforcement kits — appropriate when the door has been kicked before, when there is glass beside it, or when the hinge side is the weak point.
3. Residential deadbolts — Grade 1 and Grade 2 picks, with locksport caveats and Canadian retail notes.
4. Smart deadbolts — a convenience layer that should not weaken the mechanical side.

A typical SecureDoor recommendation

For most Quebec homes:

• Reinforced box strike with 3-inch screws into the stud, on the primary entrance.
• Schlage B60N or equivalent Grade 1/Grade 2 deadbolt.
• Match the secondary door (back, side, or basement) to the primary, since the weakest door determines the home's security level.

For homes that have been broken into, that have glass next to the door, or that face a higher-risk situation:

• A full reinforcement kit such as Door Armor MAX, covering jamb, two door shields, and two hinge shields.
• A high-security cylinder such as Medeco Maxum or Mul-T-Lock when key control matters.

What we deliberately do not recommend

• Smart locks as a security upgrade. Smart locks improve convenience but do not reinforce the frame. Add one if you want app control, but only after the mechanical side is in place.
• Door chains and flip-guards. These are theatrical rather than functional and tend to snap on the first solid hit.
• Hollow-core interior doors used as exterior doors. Replace the door rather than try to reinforce a slab that splits under impact.

Articles in this series

• Residential Deadbolts: Bolt Throw, Grade, Cylinder, Frame

  A practical guide to deadbolts that distinguishes lock strength from door-frame weakness. Grade 1 vs Grade 2, cylinder classes, and Canadian retail availability.

• Full Door Reinforcement: Jamb, Hinges, and Door Edge

  How full-door kits distribute kick and pry force across the entire opening rather than concentrating it on a single strike plate. Product picks and Quebec install notes.

• Kick-in resistance: how to know if your door will actually hold

  The weak points of a typical residential door, how to test them without tools, and which upgrades actually change the outcome — practical guide for Quebec homeowners.

• Renter-friendly door security: no-drill options for Quebec tenants

  Which residential security upgrades are possible without damaging a rental unit — what's removable, what's discreet, and how to talk to your landlord about the real improvements.

• Sliding patio door security: the three vulnerabilities to fix

  Why sliding doors are more vulnerable than a standard entry door, and which bars and hardware actually secure them — products available in Canada, notes for Quebec homeowners.

• Smart Deadbolts: Convenience Is Not the Same as Security

  How to choose smart locks by mechanical body, backup cylinder, battery behaviour, and Quebec-ready security layers — ranked picks with Canadian availability.

• Door Strike Plates: The Tier 1 Door Upgrade

  Why reinforced strike plates and 3-inch screws change the load path during a kick-in — sourced product picks, DIY instructions, Quebec retail availability.