The ideal thickness is 20 mil (approximately the thickness of 5 sheets of paper) . To best achieve this, chalk off a 50 sq. ft. section of your roof. One gallon should be used to cover this area. The thickness will then be 20 mils.

The ideal thickness is 20 mil (approximately the thickness of 5 sheets of paper) . To best achieve this, chalk off a 50 sq. ft. section of your roof. One gallon should be used to cover this area. The thickness will then be 20 mils.