wall insulation and old wires


Old 04-17-08, 10:55 PM
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wall insulation and old wires

In an old house (1935) with a bit of knob and tube remaining, is it safe to blow fiberglass insulation into the walls? Would doing so increase the risk of fire?
Old 04-18-08, 01:56 AM
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you need to rewire before insulating.
Old 04-18-08, 05:22 AM
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Knob and tube wiring cannot be covered with any insulating materials. The K&T needs to be replaced before any insulation can be installed.
Old 04-18-08, 12:09 PM
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Definitely re-wire before insulating. My neighbor's house caught fire because of this exact situation. Only it was attic insulation covering KT, not in-wall.

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