Older & Historic Homes
Retro-fit Nightmares: Knob and Tube
Is century-old wiring secretly powering your house?
Step into this retro-fit nightmare: active Knob and Tube wiring buried under modern insulation. By examining historical redactions in housing codes, we know this system lacks a grounding path and its insulation heavily degrades. It's a massive bidding blind spot for buyers. Covering it with insulation strips away its ability to dissipate heat.
To properly modernize your historic property's electrical system, call (443) 469-9371 to schedule a consultation today.
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Published 2026-06-19