Stain Blocker is General Finishes revolutionary water-based stain blocking primer for interior projects.  Stain blocker 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 light coloured General Finishes MIlk Paint and Pigmented Polys.  
General Finishes Stain Blocker is designed for effectiveness not price point.  This primer has a sophisticated resin system and an atypical formulation,  Use on pieces where you are concerned about bleed-through.
 
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