The coverage rate for Mule-Hide #311 Non-Fibrated Emulsion Roof Coating is approximately 3 to 4 gallons per 100 sq. ft., depending on the roof surface. The spray requirements are 3,000 psi at 2 to 8 gallons per minute. Tip size = 0.0861<, Fan = 6 inches to 12 inches. (All values are approximate and may vary with ambient temperature and job conditions.)