JM EPDM Tape Primer Plus has superior tack back and coverage with an improved coverage rate of 500 sq. ft. per gallon for JM versus 250 sq. ft. per gallon with the competition. This primer is used to prime JM EPDM membrane surfaces for adhering JM EPDM Tape and Peel & Stick products. The tack-back functionality allows this product to be used for detail work in vertical applications and seam work in horizontal applications.