Your front door deadbolt is your home's primary line of defense. With dozens of options on the market, choosing the right one can feel overwhelming. This guide breaks down everything you need to know to make a confident, security-smart decision.
The American National Standards Institute (ANSI) grades deadbolts from Grade 1 (highest security) to Grade 3 (lowest). Grade 1 deadbolts withstand 10 strike attacks and 250,000 open/close cycles. For exterior doors, always choose Grade 1 or Grade 2.
A single-cylinder deadbolt uses a key outside and a thumb-turn inside — the most common choice. A double-cylinder requires a key on both sides, which prevents glass-break entry but creates a fire escape hazard. Consider your door's proximity to glass before choosing double-cylinder.
Smart deadbolts offer keypad, fingerprint, or app-based entry. They're excellent for families, Airbnb hosts, or anyone who frequently needs temporary access codes. Look for models with a physical key backup in case of power failure or connectivity issues.
A deadbolt is only as strong as its installation. The bolt should extend at least 1 inch into the door frame. Pair it with a reinforced strike plate secured with 3-inch screws to prevent kick-in attacks — the most common forced-entry method.