Frequently Asked Questions Will these products discolor or turn slightly yellow over time? Do I need to seal coat my project? When I mix these products, I get lots of bubbles and the coating looks foamy, even cloudy sometimes, what causes this? Sometimes when I apply these products on a large surface, I end up with wavy areas, what is the cause? What is the best way to remove bubbles? There appears to be a “slight film” or “snail like tracks” on the surface of my freshly poured project, what caused this? I wish to protect our bar top with one of your epoxy coatings, are the coatings alcohol resistant and how do I clean up spills? I wish to protect my cured finish, is there a product that I can apply to protect it? I poured my project several days ago, but the coating remains tacky, what would cause this? My table top that I poured two days ago has a couple of tacky spots, what would cause this?