Oil-based primers cure into a hard, non-porous, and somewhat glossy surface that creates a low surface energy field. While this is a common practice, the reverse scenario—using a water-based finish over an oil base—requires specific products.
Troubleshooting Latex Paint Adhesion Over Oil Primer
Without the proper preparation, the slick nature of the oil primer can cause the latex topcoat to peel or chip away over time. Lightly sand the dried oil primer with fine-grit sandpaper to create a matte finish.
These products modify the surface tension of the oil primer, allowing the water in the latex mixture to evaporate while the resin component forms a strong mechanical bond with the underlying layer. When Priming Over Alkyd Surfaces Many professionals wonder about the specific scenario of priming over an alkyd or oil-based primer with a topcoat of oil paint.
Troubleshooting Latex Paint Peel Issues on Oil Primer
Skipping this step is a common reason for adhesion failure, regardless of the quality of the paint used. Apply a bonding agent specifically designed for water-based over oil-based surfaces.
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