Zinsser Smart Prime Undercoat

Zinsser® Smart Prime is a powerful all-purpose undercoat, specially formulated for both interior and exterior surfaces. This water-based solution offers exceptional stain-blocking performance, fast dry times, and a smooth finish. It also has low odour and low VOCs, making it the perfect choice for both professional and DIY projects. Additionally, the dried film is resistant to mold and mildew. Smart Prime is the ideal primer for any job.

Ideal for

  • Interior and exterior surfaces


  • Oil-base performance in an advanced water-base formula
  • Primer for all projects
  • Sticks to all surfaces
  • Blocks all stains, including water stains
  • Low-VOC, low odour formula
  • LEED compliant
  • Zinsser Smart Prime Undercoat TDS