Many homes built across the GTA from roughly the mid-1960s to the late 1970s were wired with single-strand aluminum branch circuits. Aluminum itself is a fine conductor, but at connection points, outlets, switches, splices and the panel, it behaves differently than copper: it expands and contracts more, can loosen over time, and is prone to oxidation. Those loose, oxidized connections build resistance and heat, which is the real fire-safety concern behind aluminum wiring. You'll find these homes throughout North York, Scarborough, Etobicoke, parts of Mississauga, Brampton and Markham, and older Toronto neighbourhoods. If you're buying, selling, or have been flagged by an insurer or home inspector, you have options short of panic, and the right one depends on your home's condition and budget. As a licensed and insured contractor, we assess the wiring, recommend pigtailing or a full rewire honestly, complete the work to the Ontario Electrical Safety Code, and pull the ESA permit. The ESA documentation is exactly what insurers typically want to see to keep or reinstate coverage.
What's included
- Full assessment of aluminum branch circuits, connections and the panel
- Honest recommendation: pigtailing versus partial or full rewire
- Pigtailing of devices using approved connectors such as AlumiConn
- Replacement of outlets and switches with aluminum-rated (CO/ALR) devices where appropriate
- Full or partial rewiring with copper where connections are too far gone
- Correcting overheated, scorched or improperly spliced connections
- ESA permit, inspection and the certificate insurers usually require
- Clear written summary of work done for your insurer and records
Signs you may need this service
- Your home was built between roughly 1965 and 1979 and may have aluminum branch wiring
- An insurer has asked for an inspection, remediation, or proof of repair to keep coverage
- A home inspection during a purchase or sale flagged aluminum wiring
- Outlets or switches feel warm, are discoloured, or flicker the connected lights
- You smell hot plastic near an outlet, switch or the panel
- You're renovating an older home and want the wiring made safe while walls are open
How it works / what to expect
We begin by confirming you actually have aluminum branch wiring and assessing its condition at the panel, outlets, switches and any junctions. Based on what we find, we recommend the right fix. Pigtailing connects a short length of copper to each aluminum conductor using an approved connector, such as AlumiConn, so devices terminate on copper at every box; it's a recognized, cost-effective remediation. COPALUM is a specialized crimp system that is far less commonly available in Ontario, so in practice the realistic choices here are pigtailing or rewiring. Where connections are badly degraded or the layout is being opened up in a renovation, a partial or full copper rewire may be the better long-term answer. Everything is done under an ESA permit and inspected, so you receive documentation your insurer can accept.
Cost factors in the GTA
Aluminum remediation cost depends mainly on the approach and the number of connection points. Pigtailing is priced largely by how many outlets, switches, fixtures and junction boxes need to be addressed, so a small bungalow costs less than a large two-storey with many circuits. A full rewire is a bigger project: it's driven by the size of the home, accessibility of the walls and ceilings, the amount of drywall repair involved, and whether the panel also needs work. Other factors include the connectors and aluminum-rated devices used and the ESA permit fee. Because condition varies so much house to house, we provide a firm quote only after an on-site assessment, and we'll lay out the pigtailing-versus-rewire trade-off so you can choose with full information.
Serving the whole GTA
We provide aluminum wiring remediation across the Greater Toronto Area. Find your city for local service, or call (289) 799-3802.