Florida built many homes during the years when single-strand aluminum branch wiring was used, roughly the mid-1960s to the early 1970s. If you own one, you may hear about it from a home inspector or an insurance company.
Why aluminum wiring is a concern
Aluminum expands and contracts more than copper and can oxidize at connections. Over time, connections at outlets, switches and splices can loosen and overheat. The wire itself isn't usually the problem; the connections are.
How to tell if you have it
Look at the cable jacket in the attic or at the panel; it may be printed with "AL" or "ALUMINUM." Silver-colored conductors at the panel are another clue. An electrical inspection will confirm it.
Your options
Full replacement. Whole house rewiring with copper is the most complete fix.
Remediation. Approved connectors can join short copper pigtails to the aluminum at every connection point. This must be done carefully with listed products.
Insurance
Some insurers want documentation that aluminum wiring has been replaced or remediated. Ask your agent what they need before scheduling work.
Quick answers
Is aluminum wiring illegal?
No, but older single-strand aluminum branch wiring needs careful attention at connections.
How long does remediation take?
It depends on the number of outlets, switches and fixtures in the home.