Water Based Stain Blocker

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Water Based Stain Blocker White Primer

     Stain Blocker is GF's NEW water based white primer. GFSB can be used to protect pigmented finishes from stain, dye and wood tannin bleed-through. Use over an existing finish, raw wood, or MDF as a base coat for GF Milk Paints, Chalk Style Paints, & Pigmented Polys.
  • Brush or spray application
  • Before use clean and remove grime, grease or loose paint
  • Sand with wood grain. Prep sand with #120 then #220 grit paper - remove dust
  • It is essential to apply 2 coats. The first coat will absorb contaminents in the wood, causing a color change during the first application and the second will seal them
  • Coverage: 600 Ft./gallon 14.76 m/liter
  • Dry: Tack free 10-15 minutes. Ready to sand in 1-2 hours
  • Existing Finish: Recoat in 3-5 hours
  • Raw wood: Recoat in 2-3 hours
  • WARNING: DO NOT MIX with any paint, stain or topcoat. Contamination from other finishes will cause product failure. Rinse all brushes/equipment with clean water. Do not use General Finishes Brush & Gun Cleaner
Water Based Stain Blocker White Primer
Stain Blocker
Product SKU Color Size Unit
Add to Cart * Add To
GFSB.1  White 
1 Gallon 
GFSB.Q  White 
1 Quart 
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**Please call 800-383-1009 for pricing on larger volumes