What knob-and-tube wiring replacement involves

Homeowners usually call us after something stops working twice. The work starts with finding out what is actually there. With knob-and-tube wiring replacement, that means looking at the existing wiring, the panel capacity and whatever the last person left behind.

Where repair makes more sense than replacement, we repair. Swapping out equipment that still has years left in it is good business for a contractor and a bad deal for you.

Where this comes up

Panels, rewires, outlets, lighting and the circuits behind everything in a house. Most of these calls come from Des Plaines and the surrounding suburbs, but we take them anywhere in our service area.

Ungrounded two-wire circuits are still common, along with three-prong outlets installed on top of them with no ground behind the plate. The outlet looks right. The tester says otherwise, and that changes how the job is planned.

How we do it

Straight to the point: we find the problem, fix it to code and leave the space as clean as we found it. Anything that needs a permit gets one, and gets inspected.

Why it usually cannot wait

Electrical problems do not stay the same size. A loose connection heats up, the heat oxidizes the metal, the oxidized metal raises the resistance, and the resistance makes more heat. That loop runs in one direction only and it ends at a scorched box.

If something is tripping, buzzing, warm to the touch or smells like hot plastic, that is the system telling you where the problem is while it is still cheap to fix.

How we quote it

If somebody prices your job without seeing it, they are guessing, and the guess gets corrected later on your bill. We would rather come out, look at the actual equipment and quote from that.

A quote from us is a written list of the work and the price for it. Nothing gets added quietly. If something behind a wall changes the job, you see it and decide before we go on.

Code, permits and inspection

Most permitted jobs have two inspections. The rough-in is checked with the walls open, before insulation and drywall. The final happens once devices are in and the power is on. Missing the rough-in means opening finished walls later, so we schedule around it from the start.

We deal with whichever jurisdiction the job sits in. We pull the permit, we schedule the inspection, and we are there when the inspector walks it. You get the paperwork at the end, which matters when you sell the building or when an insurer asks.

Copper, aluminum and what is in your walls

Aluminum branch wiring went into a lot of houses in the late sixties and early seventies. It is not automatically dangerous, but it expands and contracts more than copper, which loosens terminations over time, and it needs devices and connectors rated for it.

The repair is usually not a full rewire. Proper connectors at every termination, done thoroughly, solves most of it. Anybody quoting you a whole-house rewire on sight has not looked.

When to stop and call

If a breaker trips again right after you reset it, leave it off and call. Same if a faceplate feels warm to the touch or the panel is humming. Resetting a breaker over and over is how a small fault becomes a fire.

Half the house losing power while the other half keeps working usually means one leg of the service has dropped. Sometimes the fault is in the panel, sometimes on the utility side. Either way, stop troubleshooting and call so we can find out which.