The grand older homes of Bayview Village, Lansing, and parts of Don Mills are prime candidates for knob-and-tube wiring, an ungrounded system common before the 1950s. It's a frequent reason insurers refuse or cancel coverage. If your North York home still has cloth-sheathed wire on ceramic knobs in the attic or basement, we assess and replace it.
Knob & Tube Wiring in North York: local know-how
Knob-and-tube wiring uses ungrounded conductors run through ceramic tubes and supported on knobs, with no ground path for modern three-prong devices. In North York's older neighbourhoods it's still found in attics, basements, and behind plaster walls. The real problems are that it's ungrounded, the insulation degrades after decades, and it's dangerous when buried in blown-in attic insulation, which traps heat. We trace active knob-and-tube circuits, replace them with modern grounded cable, update devices and the panel as needed, and arrange ESA inspection. This work also resolves the insurance issue, since many Ontario insurers won't bind or renew a policy on active knob-and-tube.
What's included
- Assessment of existing knob-and-tube and how much remains active
- Phased or whole-home rewiring to modern grounded wiring
- Updated outlets, switches and grounding
- Documentation insurers typically require
- Coordination of ESA permit and inspection
- Drywall-conscious approach to limit patching
Serving every part of North York
We cover Willowdale, Don Mills, Bayview Village, Lansing and Downsview — and the rest of North York. Call (289) 799-3802 for same-day and emergency availability.