Maintenance Guides / Safety & Electrical

Inspect knob-and-tube wiring

Difficulty: easyTime: 30 mins

Why it matters

K&T lacks grounding and has insulation that hardens with age; contact with building materials or improper splicing causes fire risk and insurance denial.

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How to do it

  • 1

    Visually inspect attic, basement, and accessible wall cavities.

  • 2

    Look for ceramic tubes, bare copper wire, and cloth insulation.

  • 3

    Take photos of any sections found.

  • 4

    Document location and extent.

  • 5

    Get licensed electrician quote for replacement.