Portland doesn't see hard freezes every winter, which means a lot of homes have exposed supply lines in crawlspaces, garages, and exterior walls that were never properly insulated for it. When temperatures drop, those lines are the first to freeze โ and if ice expands far enough, the pipe cracks. We thaw the line safely, repair any damage, and flag other at-risk sections before the next cold snap. In Roseway (97213), homes built before the 1960s in this area commonly mix pipe materials from past repairs, which is a frequent source of slow leaks at the joints.