Corrosion Protection
“Coastal Package”—standard on all MIW exterior doors and windows.
In the industry, this level of corrosion defense is commonly called a Coastal Package. At MIW, it’s not an add-on—it is the standard process applied to all exterior doors and windows, engineered to defend against moisture, salt air, and harsh environments over the long term.
MIW Protection Process
Every MIW unit begins with hot-dip galvanized steel, creating a zinc-protected foundation before fabrication starts. After the unit is fabricated and assembled to specification, it moves through a controlled prep-and-protection sequence: descaling/pickling to remove mill scale and contaminants, sandblasting to create an ideal surface profile, a first degreasing stage, zinc metallizing to reinforce the corrosion barrier, a second final degrease for optimal cleanliness, and then application of the final finish coat—Premium Paint, Hand-Applied Patina, or Liquid Metal Living Finishes.