Scope has been broadened to allow use as DTM or as a topcoat over compatible primer (2004 version was a topcoat only)

Coating is suitable for exposure in Environmental Zones 2A (frequently wet by fresh water) and 2B (frequently wet by salt water) -- was formerly limited to interior and exterior normally dry exposures.

The standard is now a performance-based standard, including requirements for many performance properties not mentioned in the 2004 version.

• Composition requirements for Nonvolatile Vehicle and Total Solids by Volume have been removed.
• Corrosion resistance and humidity resistance requirements have been added (rust, blistering, and undercutting after accelerated test cabinet exposure), replacing criteria for B 117 salt spray resistance
  • Wet abrasion resistance has been removed
  • Sag resistance now measured per D4400 not D2801

Test panels must meet requirements of SSPC-PA 15, with exception of profile range of 1.75 to 2.25 mils

Requirements for DFT of DTM finish coat and for DFT of finish coat plus primer (system) have been added.