Old pipe, patched over the years
In older houses it’s common to find a little of everything. Galvanized steel in one wall, copper at the water heater, and PVC under the kitchen sink where somebody fixed a leak decades ago. That mix isn’t a problem by itself. The trouble is usually the original sections still hiding between the newer ones, rusting from the inside where nobody can see them.
So when something fails in an older Decatur house, it’s worth asking what the pipe on either side of the repair looks like. Sometimes the right call is a quick fix and moving on. Sometimes it’s replacing one run while the wall is already open. We’ll tell you which one we’d pick in your shoes, and why.