We are in the process of doing renovations on a home which was built in the early 70s in Toronto. The home has aluminum wiring in most places except the basement which was completed later.
When some walls were removed we noted that sheathing on some of the wiring is discoloured, looking almost burnt. Is this "normal" with aluminum wiring? Any thoughts on what could have caused this? How do you recommend that we address this?
Again appreciate any pointers from the experts here.