How does the color change?

Sierra Steeltiles are formed and shipped in their smooth, non-oxidized, bare metal state.

The weathering process greatly depends on environmental conditions. As the protective oxide finish develops it achieves an orange/rust color. Over time, the oxide coating develops a very attractive deep purple-brown toned patina. This finish has been known to last decades as it protects the base metal from continued rusting, as is typical with plain steel.

Contributing factors include:

• • Frequent we/dry cycles (rain or dew, then sun) accelerate the oxidation process.
  • Atmospheric contamination has an effect. In moderate industrial environments, the oxide coating usually matures rapidly and achieves the darkest possible tone.
  • In rural locations, the oxide coating develops more slowly and generally in a lighter tone.
  • In arid climates the weathering process occurs much more slowly.