How to Safely Replace Knob-and-Tube Wiring in Your Home

How to Safely Replace Knob-and-Tube Wiring in Your Home

Overview of Knob-and-Tube Wiring

Knob-and-tube wiring was commonly installed in homes built before the 1940s. It features:

While knob-and-tube wiring was safe when installed properly, it can become hazardous as it ages. Insulation and safety standards have also changed over the decades. For these reasons, I recommend replacing knob-and-tube wiring in older homes.

Dangers of Knob-and-Tube Wiring

There are several risks associated with old knob-and-tube electrical systems:

For these reasons, upgrading the wiring makes your home much safer.

Hiring an Electrician

I strongly recommend hiring a licensed electrician to replace knob-and-tube wiring. Electrical work carries serious risks, including fire and electrocution. Attempting DIY electrical work without proper training puts your safety at risk.

When hiring an electrician:

Replacing knob-and-tube wiring is expensive -- often between $8,000-$15,000 for a full rewire of a single family home. Get quotes from several electricians before committing.

Overview of the Rewiring Process

Replacing the knob-and-tube wiring in a house is a major undertaking. Here is an overview of the typical process:

Inspection and Planning

Running New Wires

Installing New Outlets, Switches and Fixtures

Connecting to the Panel

Safety Precautions During the Rewiring Process

Your family's safety should be the top priority during a rewiring project:

Staying vigilant will help ensure the knob-and-tube removal process is smooth and hazard-free.

Finishing Touches After the Rewiring is Complete

Once the new electrical system is installed and functional, a few finishing touches will help get your home back in shape:

The rewiring process is invasive, so take time afterwards to ensure your home is restored to its original state. With all new wiring in place, you'll gain safety, added functionality and peace of mind.