Before and after of kitec plumbing system removal Kitec plumbing is a problematic, multi-layered plastic pipe with an aluminum unit core and brass fittings, used in Canadian homes between the mid 1990s and 2007, known for spontaneous bursts, leak, and reduced water flow due to fittings corroding and pipe corrosion, leading to significant water damage and insurance issues, with experts recommending full replacement despite its initial cost -effectiveness. most insurance companies will not approve you if this system is in your home.