What adhesion and moisture considerations apply when using asphalt emulsion on wood substrates?

Wood is porous and can move with moisture, so adhesion depends on surface condition, dryness, and primer compatibility. Moist wood can slow cure and promote debonding or blistering because water is trapped beneath the film. Some emulsions are not designed for wood because tannins, resins, or surface treatments can interfere with bonding. For best results, wood should be clean, dry, and stable, often primed with a compatible primer to reduce absorption and improve bond. Buyers should verify the product explicitly allows wood use, and test a small area for cure and adhesion.