Hey everyone! I just bought my grandparents' house and I'm working on getting it ready for insurance, but I'm running into a snag with the old knob and tube wiring. No insurance agency will cover the house while that wiring is still active.
I've been brainstorming some options with friends who are into home remodeling. My neighbor managed to get rid of his K&T wiring by disconnecting it and leaving it in the walls while he ran new Romex from the attic, connecting various outlets and fixtures to a new breaker box. I'd rather avoid tearing down the plaster walls since they're in great shape, so I'm looking for advice on how to tackle this without creating a huge mess.
Has anyone done this kind of work before? Any tips on how to proceed effectively?
4 Answers
First off, you should really check what kind of panel and service you currently have. If you're updating wiring, now might be a good time to upgrade your entire panel too.
When it comes to running new wiring, you will likely need to fish the wires through the walls, which is quite doable if you have access to the attic and crawlspace. Just be aware you'll probably have to cut some strategic holes in the plaster.
Also, there's no need to demolish the old wires; just disconnecting them is usually sufficient. But be sure to check if the insurance requires you to get a permit for the rewiring since they know about the K&T issue.
Running new wires in existing walls is something electricians do frequently, just make sure you follow local codes. In some states, they even have specific K&T insurance programs to assist homeowners through this transition, especially in older homes. Just check your local resources for more info.
Don’t get discouraged, though! Keep shopping around for different insurers. They often have different guidelines when it comes to homes with K&T wiring. Also, verify whether your current service is fuses or breakers, as that can influence your insurance coverage.
As an electrician, I have to warn you that this kind of project is no joke. If you’re unsure about your skills, it could become a major headache and financially draining. You’ll generate a ton of dust just from making small holes in plaster. If you don’t feel confident, consider getting a knowledgeable helper or professional. It’s a lot harder than it looks, especially in older homes!
That’s the spirit! Just be prepared for the mess and take the project slow. You got this!

Haha, I get it—I'm not the most experienced, but I like taking on challenges myself. I've got reliable buddies in the trades who can help if I get stuck. I guess I’ll just learn as I go!