Older Asheville homes with mixed wiring — knob & tube, BX, old Romex. Renovation rewires. Plain-English quotes. Permits pulled, inspection scheduled. Lifetime workmanship warranty.
Most Asheville homes built before 1970 have three different wiring eras running in parallel: original knob and tube in the attic and exterior walls, BX (armored cable) added during 1950s-60s renovations, and modern Romex from later updates. Each works. None of them work well together.
A whole-house rewire pulls all of it out and replaces everything with current-code grounded copper. It's a bigger job than a knob-and-tube-only rewire, but for homes with this kind of mixed lineage, it's usually cleaner than three phased projects.
Below: when whole-house makes sense vs. targeted rewiring, what 1-3 weeks on-site actually looks like, and how we minimize damage to plaster walls.
The three eras above (K&T, BX, old Romex) cover most pre-1970 homes. Two more wiring types show up often enough to call out separately — aluminum branch wiring from the early 70s, and ungrounded 2-wire systems.
Open conductors threaded through porcelain knobs and tubes. Ungrounded, brittle insulation, can't handle modern loads. Insurance carriers commonly won't cover homes with active K&T. For the deep dive on pre-1950 K&T removal in historic Asheville homes, see the dedicated page.
Spiral metal sheath over cloth-insulated conductors. The metal jacket was supposed to be the ground path, but the bonding fails with age. Common in 1950s-60s Asheville renovations layered on top of original K&T.
1950s-60s cloth/rubber-sheathed cable. Insulation degrades and goes brittle when disturbed; often ungrounded. Distinguishable from modern (post-1970) plastic-sheathed Romex by the cloth texture.
Aluminum was substituted for copper during a 1960s–70s copper-price spike. Of the older wiring types on this page, it's the one we treat as the most urgent fire risk — even ahead of knob & tube — because the hazard is active and ongoing at every connection. Aluminum expands, contracts, and slowly creeps under heat more than copper does, and it oxidizes; over the years that loosens connections at outlets, switches, and panel terminations and raises their resistance. A high-resistance connection runs hot, and an overheating or arcing connection is a serious fire hazard. The U.S. Consumer Product Safety Commission found that homes built before 1972 and wired with aluminum branch circuits were 55 times more likely to have one or more outlet connections reach "fire-hazard conditions" than homes wired with copper.
The concern is specific to the small-gauge solid aluminum on 15- and 20-amp branch circuits (the runs feeding your outlets and lights) — not the larger-gauge aluminum used for service entrances, feeders, and dedicated range/dryer circuits, which the CPSC's branch-wiring guidance explicitly excludes. The CPSC flagged aluminum branch wiring decades ago: these homes carry significantly higher fire risk, and some insurers require an inspection or remediation before they'll write or renew coverage. CPSC-recognized permanent repairs are a full copper replacement, or COPALUM / AlumiConn connectors installed by a qualified electrician at every aluminum connection. What we usually find in the field is older "repairs" that were incomplete or used methods the CPSC doesn't recommend — so a full rewire to copper is the cleanest, most durable fix.
Pre-1960s wiring that ran hot + neutral only — no ground. Not as urgent as K&T or aluminum (insulation can be sound, no specific fire mechanism), but some homeowners elect to rewire anyway. Reason: every grounded modern appliance, surge protector, and three-prong device needs a real ground to actually do its job. Often paired with a remodel rather than done as a standalone job.
We're happy to inspect first and tell you which of these you're in. Free for realtor referrals; small fee otherwise that we credit toward the job if you book.
You stay in the house. Power stays on for most of the job. Here's how we structure it.
We walk every room, identify circuit boundaries, locate junction boxes and existing splices. We cut clean access points where we need them — typically 4-6 per room in plaster, fewer in drywall. Plaster takes longer; we pad the schedule for it.
Phased by zone. We typically work the upstairs bedrooms first (least disruptive to daily living), then kitchen, then living areas, then primary bedroom last. Power off only in the active zone — rest of the house stays live. Most days end with everything in your living areas working.
If we're upgrading the panel as part of the rewire (most jobs), this is where Duke Energy schedules the service drop and we tie everything in. Power off for 4-6 hours during the swap.
New outlets and switches installed and labeled, smoke/CO detectors verified, GFCI/AFCI tested. We walk the house with you, show you the new panel layout, hand over the inspection sign-off paperwork. Drywall repair is itemized — we patch or you do.
A few common triggers: mixed wiring (knob & tube + BX + old Romex), insurance asking for documentation, planning a major renovation that opens walls anyway, repeated electrical issues that are cheaper to fix once than over and over, or selling the home and the inspector flagged it.
Knob & tube rewiring specifically replaces pre-1950 K&T wiring. A whole-house rewire replaces ALL of the home's wiring — including K&T, BX, old Romex, and anything else non-compliant. If your home has multiple wiring eras (which is common in Asheville), the whole-house rewire is usually cleaner than phased K&T-only work.
Typically 1-3 weeks depending on home size, access, and wall material. Plaster walls (older Asheville homes) take longer than drywall. We work room-by-room so you're not without power for the full job.
We minimize damage. Where we can fish wires through existing paths, we do. Where we need to open walls, we cut clean access points and itemize drywall repair on the quote — you decide whether to bundle or bring in your own painter.
Yes. Buncombe County requires a permit for any rewire. We pull it, schedule the inspection, fix anything flagged, and document the final pass. Permit fee is in the quote.
Aluminum branch wiring (mostly installed in the late 60s and early 70s) is a documented fire risk — we treat it as more urgent than knob & tube because the hazard is active at the connections. The metal expands, contracts, and creeps under heat more than copper, which loosens connections at outlets, switches, and panel terminations over time, and a loose, high-resistance connection can overheat and arc. The CPSC found homes built before 1972 and wired with aluminum were far more likely to have outlet connections reach fire-hazard conditions, and some insurers require an inspection or remediation before they'll write or renew coverage. CPSC-recognized permanent repairs — COPALUM connectors, or AlumiConn where COPALUM isn't available — treat every aluminum connection (outlets, switches, fixtures, junction boxes, and the panel) and must be installed by a qualified electrician. A full rewire to copper is the most thorough fix.
Less urgent than knob & tube or aluminum. Ungrounded 2-wire systems aren't an active fire hazard the way K&T or aluminum can be — the insulation can be sound, and there's no specific arcing mechanism. But every grounded modern appliance, surge protector, GFCI, and three-prong device needs a real ground to do its job, so some homeowners elect to upgrade anyway, especially when paired with a remodel that opens walls.
A real person picks up M-F 8am-7pm — not a phone tree, not a call center.
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