Updated 2026 — Anodized 6005-T5 aluminium is essentially maintenance-free for the life of the array in most environments; only heavily polluted or marine C4/C5 sites benefit from periodic fresh-water rinsing to clear salt deposits. That is a major lifecycle-cost advantage over painted or galvanized steel racking.
6005-T5 anodized aluminum is largely maintenance free. Only in highly polluted or marine conditions is rinsing with clean water required, during scheduled panel cleaning.
Anodizing is surprisingly durable and resilient to corrosion. However, like its aluminum base, it is susceptible to strong alkalines, such as Lye or Sodium Hydroxide. It also can be damaged by strong acids, such as nitric or sulfuric. Beware of strong alkaline cleaners, which often contain ammonia or lye, as well as masonry or cement cleaners, which can contain strong acids.
Surprisingly, anodizing is quite resistant to organic solvents. While alcohol or acetone will quickly remove ink from a permanent marker, for example, they will not damage or fade colored anodizing, and can be excellent for cleaning purposes.
