What is the estimated coverage rate on stucco as an anti-graffitiant? enegren February 23, 2024 FAQsFirst 100-150 Square Feet Per Gallon. Second coat 110-160 Square Feet Per Gallon.Post navigationPrevious Previous post: Does the product have a high perm rate?Next Next post: What is the estimated coverage rate on slate as an anti-graffitiant?