Knob-and-Tube
Wiring Replacement

Standard process: we do a free walk-through to scope the K&T (sometimes it's less than the carrier inspector thought), pull the building permit through your town hall, do the replacement, coordinate the inspection, and send you a certificate of completion plus the inspection sign-off. Most carriers accept this paperwork at renewal. Timeline is typically 5-10 business days from walk-through to certificate depending on permit office speed.

Full whole-house replacement runs $12,000-$30,000+ depending on house size, finish state (plaster is harder than drywall), accessibility (knee walls and attic insulation make it harder), and whether the panel and service need upgrading at the same time. Room-by-room replacement runs $1,500-$3,000 per room. The single biggest cost driver is finish state — if walls are open during a renovation, the cost is dramatically lower.

No — that's both a code violation and a real fire hazard. K&T wiring depends on air circulation around the conductors to dissipate heat; covering it with batt insulation, blown-in cellulose, or spray foam traps that heat. Energy-efficiency upgrades that include attic insulation almost always require K&T removal first. Connecticut building code is explicit on this.

Not on its own. K&T installed correctly in 1920 and left undisturbed in open air can still function safely a century later. The risks come from (1) insulation degrading and crumbling, especially near old porcelain junction boxes, (2) people stapling modern insulation over it, (3) ungrounded outlets attached to it not protecting modern equipment, and (4) carry-current overload as households add more loads to a system that was sized for one light bulb per room.

Usually no. We work room-by-room, keeping the rest of the house energized. There are short outages during the actual cutover to the new panel, plus targeted single-room outages while we work in that room. Most customers stay in the house throughout — we coordinate work hours and noise around your schedule.

Yes, in our experience essentially always. The permit, inspection sign-off from your town building inspector, and our written workmanship guarantee are the documentation packet carriers ask for. If your specific carrier wants additional documentation (some require photographs of the work), we provide that too.

Different but related. Cloth-jacketed cable (a fabric-wrapped two-wire or three-wire cable) was the transitional wiring between K&T and modern romex, common from the 1930s to 1960s. The conductor inside is usually still good copper, but the cloth insulation can become brittle. Cloth wiring isn't the same fire-hazard concern as K&T but is increasingly flagged by underwriters in older homes. We handle both on the same permit when both are present.