Answer
Jun 21, 2022 - 07:46 AM
Water-based and Oil-based do not play well together (water and oil do not mix). If you were to prime first with something that can act as a bridge (like AFM Transitional Primer, specifically formulated to work well over both water-based and oil-based coatings) - then you can paint over that primed surface with ECOS water-based products like this one.Your other option is to order a sample of the ECOS product and test. If the sample section you paint does not adhere well/flakes off easily after drying, that was probably an oil based stain.
