WAX BLEED:
Stains that come from waxy substance in the reconstituted wood products such as chipboard or MDF. When the substrate is painted, these staining substances bleed through the paint; they can even bleed through some ordinary primers, possibly causing dirt pickup, fungal/algal contamination and/or poor paint adhesion (see Dirt Pickup and Fungal/Algal Contamination.

POSSIBLE CAUSES:
• Failure to apply a proper primer to hardboard before applying the top coat.

SOLUTION:
• We recommend a quality water-based acrylic primer followed by two coats of quality acrylic paint.

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