Does Knob and Tube Wiring Contain Asbestos? | | Yes, always | 25% | | In most cases | 16% | | In some cases | 25% | | Not sure | 33% | | | | | Question: Does Knob and Tube Wiring Contain Asbestos? Top Answer (33% of 12 votes): Not sure.
Answer: Not sure
Explanation: Never worked with either one | | A plus repairs | Answer: In most cases
Explanation: Portions often do. | | Aegis Electric LLC | Answer: In some cases
Explanation: ceramic knobs and tubes provide some protection because even if the insulation does fall off, the bare wire can not touch the wooden structure. The insulation is also somewhat flammable. Some knob and tube insulation contained asbestos, which reduced the risk of fire, but can cause cance | | D B Electric |
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