Hi Michael, thank you for your review. I'm very sorry to hear our Multi-Surface Roof Paint did not provide the coverage you expected. That is not the experience we want for our customers and certainly not the performance we expect of the product. The paint should cover 250-450 sq. ft. per gallon, depending on the surface texture, porosity, and when applied at the recommended spread rate. Nonetheless, we want to turn this around and help get your project back on track. Please reach out to us directly so we can learn more about your project and assist. We look forward to hearing from you! -Lina