Firestone QuickPrime Plus is designed to clean and prime the RubberGard EPDM membrane and/or substrate prior to application of QuickSeam Products, Pourable Sealer or Lap Sealant. QuickPrime Plus must be applied with a QuickScrubber or QuickScrubber Plus pad and handle.
Apply QuickPrime Plus to the RubberGard EPDM surfaces and/or other substrates to receive QuickSeam products with the QuickScrubber or QuickScrubber Plus pad and handle using long back and forth strokes with moderate to heavy pressure along the length of the area. Continue until surfaces become dark grey in colour (no streaking or puddling). Factory seams require parallel as well as perpendicular application motions along the factory seam. When using the QuickScrubber Plus pad and handle, make sure to apply sufficient pressure during application so the pad holder flattens to allow the total surface of the pad to contact with the RubberGard EPDM membrane. Allow the primed surfaces to dry completely according to the touch-push test (usually less than 10 minutes) before applying QuickSeam products.