Walk into any hardware store and you'll find an entire aisle of door locks โ€” deadbolts, knob locks, smart locks, entry sets, mortise locks, rim locks. For most homeowners, it's overwhelming. The marketing on the packaging doesn't help: every box claims to be "pick-resistant," "bump-proof," or "maximum security." What does any of it actually mean?

NextDayJose has been providing expert handyman services in Silver Spring and Rockville, MD for over 13 years and is a proud Latino-owned business. We've installed hundreds of door locks across the DMV โ€” from basic deadbolts to commercial-grade multi-point locking systems. Here's what we actually tell our customers when they ask which lock to buy.

Start With the ANSI/BHMA Grade System

The most useful thing to understand about door hardware is the ANSI/BHMA (American National Standards Institute / Builders Hardware Manufacturers Association) grading system. Every residential lock sold in the US is tested against this standard and receives one of three grades:

  • Grade 1 โ€” Highest security. Withstands 250,000 open/close cycles and significant force resistance. Required for commercial applications; recommended for exterior residential doors.
  • Grade 2 โ€” Standard residential. Suitable for most exterior home doors. Withstands 150,000 cycles.
  • Grade 3 โ€” Light-duty residential. Best for interior doors or low-traffic secondary entrances.

For your front door in Rockville or Silver Spring, you want at minimum a Grade 2 deadbolt, and ideally Grade 1. The price difference between Grade 2 and Grade 1 is typically $20โ€“40 โ€” a small investment for significantly better protection.

Single Cylinder vs. Double Cylinder Deadbolts

A single cylinder deadbolt has a keyed cylinder on the outside and a thumb turn on the inside โ€” the most common type for exterior doors. A double cylinder deadbolt requires a key on both sides. Here's when each makes sense:

Double cylinder deadbolts are sometimes recommended for doors with glass panels near the lock โ€” the theory being that an intruder can't reach through broken glass and turn a thumb turn. However, they're a fire hazard if family members can't find the key in an emergency. Most fire safety codes actually discourage them.

Our recommendation for nearly all Rockville homeowners: single cylinder deadbolt with a Grade 1 or Grade 2 rating. If you have a glass panel in your door, consider door reinforcement or replacing the glass panel with a solid insert rather than using a double cylinder.

Traditional Deadbolt vs. Smart Lock: Which Is Right for You?

Smart locks have become genuinely good in the last few years. Here's a clear breakdown of the tradeoffs:

FeatureTraditional DeadboltSmart Lock
Security levelGrade 1โ€“3 options availableMost are Grade 2; some Grade 1
Power dependencyNoneBattery (most have 6โ€“12 month life)
Keyless entryNoYes (code, app, fingerprint)
Remote accessNoYes (with Wi-Fi or Z-Wave models)
Guest access managementRequires physical key copyTemporary codes or app access
Price range$30 โ€“ $120$120 โ€“ $350
Installation complexityLowLow to moderate

Smart locks make the most sense for households with irregular schedules, frequent guests, or vacation rental situations. Traditional deadbolts remain the most reliable option in terms of simplicity and security against physical attacks โ€” a $40 Grade 1 Schlage deadbolt is extremely difficult to defeat.

If you go the smart lock route, our smart lock installation service handles the wiring, setup, and app configuration. If you prefer a traditional upgrade, our lock replacement service gets it done the same day.

Don't Forget the Door Frame

Here's the thing most lock guides skip entirely: the lock is rarely the weak point in a forced entry. Most residential break-ins happen through kick-ins โ€” the door frame splinters at the strike plate, and the deadbolt hardware stays perfectly intact. A Grade 1 deadbolt in a weak frame is significantly less secure than a Grade 2 deadbolt in a reinforced frame.

What actually strengthens your door:

  • Extended strike plate โ€” A 3-inch strike plate with 3-inch screws that reach the wall framing (not just the door jamb) dramatically increases kick resistance.
  • Door jamb reinforcement โ€” Metal reinforcement wrap around the frame edge. Our door reinforcement service includes this.
  • Hinge bolts โ€” If hinges are on the exterior side of the door, hinge security bolts prevent the door from being lifted off.
  • Door quality โ€” A solid-core or fiberglass door resists impact far better than a hollow-core interior door sometimes used on garage entries.

What About Knob Locks?

Knob locks on exterior doors are not secure as a primary lock. The cylinder is in the knob itself, which can be gripped and torqued, and the latch bolt is typically spring-loaded rather than deadlocking. If you have only a knob lock on your front door, add a deadbolt โ€” they're not mutually exclusive and the combined installation cost is modest.

Our Recommendation for Most Rockville Homeowners

For a standard front door in Rockville, Silver Spring, or the DMV suburbs, we recommend:

  • Schlage B60N or Schlage B62N (Grade 1 single cylinder deadbolt) โ€” around $50โ€“70 at hardware stores
  • Plus a Schlage or Kwikset knob or lever lockset for the door handle
  • Extended strike plate with 3-inch screws
  • Optional: door jamb reinforcement kit

If you want keyless convenience without the smart lock price premium, consider a Schlage BE365 keypad deadbolt ($80โ€“100) โ€” Grade 2, battery powered, no app required, just a keypad code.

Need a Lock Installed or Replaced in Rockville?

NextDayJose installs deadbolts, smart locks, and full door hardware across Silver Spring, Rockville, and the DMV. Same-day service available.

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