INSL-X Prime Lock Plus

INSL-X Prime Lock Plus is an alkyd that primes and seals plaster, wood, drywall, and previously painted or varnished surfaces. It ensures the paint top coat has a consistent sheen and appearance (excellent enamel holdout), seals even the toughest stains without raising the wood grain, and can be top coated with any latex or alkyd finish coat for interior use and spot priming exterior surfaces.


  • High-hiding, multi-purpose alkyd primer sealer
  • Superior adhesion to glossy surfaces
  • Prevents bleed-through
  • Excellent enamel holdout

Available Finishes

INSL-X Prime Lock Plus

More Information

  • Available Colors: White
  • Sheen (or Gloss): Primer
  • Cleanup: Solvent
  • Resin Type: Alkyd
  • Recommended Use: Interior, Exterior
  • MPI Rating: 69
  • VOC Level: 323.0