Galvanized supply lines corroding from the inside
Why it happens here
In West Colfax the 1920s brick bungalows and historic Victorians supply is galvanized steel, early copper in places, and the zinc coating is wearing away. Steel rusts from the inside out, pressure drops, water discolours and pinhole leaks start behind walls — the cohort fails together, which is why the diagnosis is a pressure test.
Our approach
We pressure-test the system in West Colfax and, where corrosion is isolated, replace that section. Where it runs through the house, we plan a repipe and show the pressure readings before and after — and the test is read against the building: a 1920s brick bungalow's galvanized and a newer townhome's PEX give different readings for different reasons.