Best Roof Coatings & Sealants (2026)

Silicone vs Acrylic vs Polyurethane, Coverage & Prep

A well-chosen roof coating can buy a tired flat or metal roof another decade, and the wrong one peels off within two summers. Silicone handles ponding water and suits flat recover work; acrylic elastomerics give strong reflectivity on sloped roofs in dry sunny climates but erode under standing water; polyurethane resists traffic and hail; aluminium-fibred asphalt suits old asphalt and mobile-home metal. This guide compares each family with its trade-offs, explains coverage in terms of dry film thickness rather than square footage alone, and walks the prep sequence of cleaning, seam reinforcement, priming and two cross-directional coats that decides whether the coating lasts.