Start at your front door right now. Push on it hard with the door locked. If the frame flexes, the lock wobbles, or the bolt barely catches, your lock is not secure - the hardware around it is failing. A deadbolt is only as strong as the door, the frame, and the screws holding everything together. This walkthrough covers every point of failure in a Williamsburg or Brooklyn apartment, brownstone, or storefront so you know exactly what to fix, what to upgrade, and what is just fine.
How do I test my deadbolt and door frame to know if they will actually hold?
First, test the deadbolt throw. Turn the thumbturn slowly and watch how far the bolt extends. A Grade 1 deadbolt like the Medeco Maxum or Mul-T-Lock MT5+ throws a full inch. Many builder-grade locks throw half that. If yours barely clears the strike plate, it is time to change the deadbolt.
Next, look at your strike plate. Most prewar Bed-Stuy and Bushwick walk-ups have strike plates held in with half-inch screws that bite into door trim, not the stud behind it. Pull those screws and replace them with three-inch screws so they reach the structural framing. This one fix, replacing short screws with longer screws in the strike plate, stops most kick-in attempts cold.
Check whether the strike plate and the bolt actually line up. If you see wear marks above or below the bolt hole, the door has shifted. You can align the strike plate by filing the hole slightly, or by shimming a hinge to lift or drop the door back into square. Loose hinge screws are often the real problem. Tighten every hinge screw on the door first. If the holes are stripped, fill them with wooden toothpicks and wood glue, let them dry, and re-drive the screws.
Feel the latch on your passage or entry lock. If it does not spring back cleanly, you may need to adjust the latch plate or lubricate the mechanism. Skip WD-40. Use graphite lubricant for locks with tight tolerances or a silicone spray like Blaster Silicone for general use. Graphite works best on deadbolt cylinders where oil-based products attract grime over time.
Finally, check for a gap between the door edge and the frame. If you can see light or slip a credit card through when the door is closed, a burglar can use a shim to push back the latch. Install an anti-thrust plate on the latch side to close that gap.
What other entry points on my Brooklyn brownstone or apartment should I be checking?
Work past the front door. In a Greenpoint or Williamsburg brownstone, the weaker doors are often the ones you stop thinking about: the back door, the cellar entry, and the gate.
Windows. Sash windows in prewar buildings often rely on a single painted-shut latch. Add a window lock like the Ideal Security SK110 or drill a hole through the inner sash and drop in a pin lock. Ground-floor and first-floor windows facing a fire escape need this.
Sliding doors. If you have a terrace or rear sliding door, lift the panel - if it pops up off the track, anyone can remove it from outside. Drop a cut-down wooden dowel or a sliding door security bar like the Master Lock 265D into the track. Pair it with a secondary pin lock in the upper channel.
Mailbox locks. A broken mailbox lock is not just a nuisance. Mail theft in East Williamsburg and Downtown Brooklyn is common, and stolen mail means identity exposure. Bring your old cylinder to the counter at B & G and we can usually match it or cut you a replacement on the spot.
Gate locks. If you have a street-level iron gate or a basement rolling gate, make sure the gate lock is a closed-shackle padlock or a dedicated gate cylinder. Open-shackle padlocks can be cut in seconds. A Mul-T-Lock Classic closed-shackle padlock or a hasp install with a shrouded lock is a real deterrent. When you install a hasp, make sure the screw heads are hidden when the hasp is closed so they cannot be backed out.
Peephole. A wide-angle 200-degree peephole like the Defender Security U 9884 costs very little and tells you who is at the door before you touch the lock. Most prewar Brooklyn apartment doors have narrow peepholes with distorted lenses. Swap it yourself with a screwdriver in ten minutes.
Door alarm. A simple door alarm sensor like the Doberman Security SE-0106 adds a loud alert if the door is forced. It is not a substitute for good hardware, but it buys you time and scares off opportunists.
When should I rekey, change the lock, or upgrade to a smart lock?
Rekey any time you move into a new apartment or storefront, lose a key, or change roommates. Rekeying changes the internal pins so old keys no longer work without replacing the hardware. It is faster and less expensive than a full lock change. If the cylinder is worn, corroded, or a low-security brand like a no-name builder lock, replace it instead.
Change the deadbolt entirely when the lock is damaged, when you want a higher security rating, or when you are installing a smart lock. If you want to install a smart lock, the Schlage Encode Plus and Yale Assure Lock 2 are solid choices for Brooklyn apartments. Both work on standard prep doors. Tighten the set screw on the interior assembly firmly or the lock will feel sloppy within weeks.
If you own or manage a Bushwick or Bed-Stuy rental building, a master key system lets you hold one key for every unit while tenants have individual keys that do not cross over. It is worth having a locksmith design the system properly rather than retrofitting it later.
For anything you are not comfortable doing yourself, walk into B & G Locksmith at 210 Robeling St in Williamsburg or call us at (347) 699-9268. We stock cylinders, strike plates, padlocks, and smart lock hardware in the store, and we cut keys while you wait. No dispatch runaround - just a real counter you can walk up to.
Frequently asked questions
Can I rekey my apartment lock myself without a locksmith?
You can buy a rekey kit for Kwikset SmartKey or Schlage locks and do it yourself if the lock is in good shape. If the cylinder is worn, corroded, or a brand you cannot source a kit for, a locksmith rekey is faster and more reliable. B & G carries cylinders in stock, so the turnaround is quick.
Do chain guards and door chains actually stop a break-in?
No. A standard chain guard can be kicked off the frame in one hit. It slows a lazy intruder for about two seconds. Replace it with a heavy surface bolt or a Segal 485 chain lock with a steel strike screwed into the stud, not just the doorframe trim.
What is an anti-thrust plate and do I need one?
An anti-thrust plate is a steel plate that covers the gap between a door and its frame so a burglar cannot slide a shim between them to push back the latch. If your door has a spring latch or a deadbolt that does not fully engage, you need one. They are inexpensive and install with just a screwdriver.
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