HomepageQ&A Anthologic IT 5 years ago Categories: Q&A How Much Roof Coating Do I Need? Roof coating systems are designed around dry film thickness Coverage rates, or gallons per 100 square feet, are the determining factor in the finished thickness of the coating system. See the rest of our Roof Coating Q&A Videos. Which Roof Coating is Best? » « Can Elastomeric Roof Coating be Painted or Tinted? Tags: Q&A Anthologic IT: Related Post How to clean my silicone coated roof? How to Apply Elastomeric Roof Coatings Q19: What are the important considerations to repairing a spray polyurethane foam roof?