Hi krob, thank you for your review. I'm sorry to hear that you did not get the coverage that you expected. Typically, the primer coat will seal the porosity of the surface, even if it's not covering. Once you apply your topcoat, the paint will cover the surface. Customer satisfaction is important to us, and we appreciate your feedback. Please reach out to us directly if you need further assistance; our customer care team is happy to help you! -Giovanna