Mixing copper with aluminum or steel
Copper should not touch aluminum or galvanized steel, and water running off copper corrodes those metals below it. That rules out copper gutters with aluminum downspouts or steel fasteners, and it means checking what sits under each outlet. The same runoff can leave streaks on light stone, brick or concrete, so splash blocks and drain lines are planned at the start.
Valley Ranch and Las Colinas drainage rules
Valley Ranch’s guidelines require every roofed improvement to be fully guttered, with downspouts carrying all water to the ground, and ask homes next to water features or common areas to drain their gutters to the street. Exterior changes go to the Architectural Review Committee, and copper gutters change how a house looks. In Las Colinas, check with the Las Colinas Association before replacing gutters.