How to Thin Kilz Primer

Thin Kilz primer using water for latex versions or mineral spirits for oil-based formulas. Follow manufacturer guidelines for best results.

Why Thin Kilz Primer?

  • Improves coverage on porous surfaces
  • Reduces brush marks and roller texture
  • Helps achieve even application
  • Prevents drips and runs

Thinning Methods by Primer Type

  1. Latex Kilz: Add 1/4 cup water per gallon
  2. Oil-based Kilz: Use mineral spirits (1:10 ratio)
  3. Multi-surface: Follow manufacturer's dilution instructions

Comparison of Thinning Approaches

Method Ratio Time Needed Cost
Water Dilution 1:4 10 minutes Low
Mineral Spirits 1:10 15 minutes Medium
Purchase Thinned Version Pre-mixed 0 minutes High

Application Tips

  • Stir thoroughly after adding thinner
  • Test on small area first
  • Apply in thin, even coats
  • Allow proper drying time between coats