Maintenance Guides / Exterior & Structure

Replace exterior door lockset and security hardware

Difficulty: moderateTime: 45 minsEst. Cost: $20 - $300

Why it matters

Worn exterior door locks can fail to latch properly or be forced open, compromising home security. Periodic replacement and rekeying (every 5 years or after relocation) is a prudent security practice.

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How to do it

  • 1

    Test entry door lock by inserting key and locking/unlocking multiple times

  • 2

    Check that bolt extends and retracts fully and door latches firmly

  • 3

    Inspect hardware for loose bolts, broken springs, or signs of wear

  • 4

    Attempt lubricating with graphite powder or silicone spray if operation is stiff

  • 5

    Measure lockset backset to determine replacement compatibility (usually 2 3/8 or 2 1/4 inches)

  • 6

    Install new lockset by removing old hardware and aligning new lock with door holes