Deadbolt Installation in Indianapolis

Single-cylinder vs. double-cylinder deadbolts

A single-cylinder deadbolt is turned by a thumb-latch on the inside and a key outside, which is standard for most homes. A double-cylinder version requires a key on both sides, sometimes chosen for doors with glass panels nearby, though it raises fire-egress considerations worth discussing before installing one.

What actually makes a deadbolt strong

The bolt's throw length, the thickness of the strike plate, and — most importantly — the length of the screws anchoring that strike plate into the door frame's structural wood determine real-world kick resistance far more than the deadbolt's brand or finish alone.

• Bolt throw length of at least one inch
• Reinforced strike plate with 3-inch screws into the framing
• Grade 1 or Grade 2 cylinder for better pick/drill resistance

Where deadbolts get skipped and shouldn't

Back doors, side entries, and doors leading from an attached garage into the house are frequently left with just a knob lock, even though they're common secondary entry points. Extending deadbolt coverage to those doors closes an easy gap.