When looking for a long-term roof solution you need to compare Apples to Apples. Liquid EPDM is a one coat application. There are no primers needed and when you begin adding up the cost of other systems requiring primers and multiple coats you are in many cases exceeding the cost of Liquid EPDM and have a less superior sealant on your roof. Why add the unnecessary weight to a roof with multiple-coat systems? Cut your time and/or labor costs in half with a one coat system. Liquid EPDM is a very thick honey consistency and has a slow cure time. This is actually one of the biggest benefits of the product! During the cure process you will see bubbles resembling those when you cook a pancake.