Purpose of Backside Coating

• Finish side protection
  • Backside coating must be compatible with top side coating
  • Protection during coiling stages when exiting the paint line
  • Protection during
    • Recoiling
    • Slitting process
    • Sheet stock storage

• Lubrication
  • Paint finish on top side and backside acts as lubrication
  • Offers protection to
    • Slitter
    • Roll former
    • Gives traction to push or pull material through rollers
    • Tooling
    • Easier handling and sliding of material

• Corrosion resistance to base metal

• Dissimilar metal protection
  • Backside coating acts as a barrier between the panel and the framing

What is backside coating?

• Primer with a back coat
  • Off-white/light gray

• Notify custom if project has backside coating exposed there maybe a color variance to top side coating

Backside Coatings on other substrates

• Plastisol on zinc
• Epoxy on metal composite materials (MCM) & insulated metal panels (IMP)
• 70% PVDF
  • May be offered on both sides due to
    • Visibility of backside coating
    • Exposed to outside environment
    • If project requires warranty on both sides