max225 wrote: ↑Fri Jun 03, 2022 12:18 pm
Johnny_P wrote: ↑Fri Jun 03, 2022 11:51 am
“House has good bones though” just means there’s a higher likelihood of knob and tube, horse hair plaster walls, asbestos, termite damage, and a broken cast iron sewer pipe under your foundation.
What does “knob and tube” mean ?
Knob and tube is the original way electricity was managed in houses...like 100+ years ago. Wires coated in oil-soaked fabric (before plastic existed) were run through porcelain "tubes" through studs and junctions were made by tying bare wires to others that look like "knobs". There were no grounds or neutral wires, so a bit sketchy BUT if the coating on the wires is in good condition, it's still mostly safe.
But wires are run though walls, so you have no idea the condition of wires. Our last house was built in 1910 and was all knob and tube except for the kitchen that was updated. The knob and tube was visible in the basement, and we had an electrician look at it and deem it safe because the coating was fine and high demand appliances weren't plugged into them because the kitchen was all updated.
In theory knob and tube is more robust than romex because the wires in many cases were thicker gauge, and being separated from other wires made heat dissipation more efficient. But over time, that's' not necessarily true.
If you get a house that's still knob and tube and the wires are in bad shape, it's going to be major

to replace it all (which you need to do for safety). Tearing into walls/ceilings/floors, replacing wires, repairing walls/ceilings/floors, etc.
