Hello Jflo, thank you for sharing your feedback. We're sorry to hear you're not getting the coverage you expected on your ceiling, and that after three coats there are still visible marks; that's not the experience we want our customers to have with our products. To get your project back on track, we'd recommend recoating your ceiling (per the labels recommended spread rate). To avoid marks, be sure to blend all start and stop points with a well-saturated application tool, while maintaining a wet edge. Customer satisfaction is important to us. Please feel free to reach out to our Customer Care team directly for additional assistance or if you have any questions. Have a great rest of your day. –Joanna