Perma-Patch Crack Sealant PL is a specialty-grade, premium-quality joint sealing compound. Perma-Patch Crack Sealant PL is relatively hard and has a high softening point, which makes it well-suited for parking lots and driveway applications.
Perma-Patch Crack Sealant PL is recommended for sealing joints and cracks in Portland cement and asphaltic pavements. It is designed to seal expansion and contraction joints, longitudinal and transverse cracks, joints between concrete and asphaltic shoulders, and random cracks.
Proper surface preparation facilitates adhesion and consequently the maximum service life of the sealant. In order for proper adhesion to occur, the crack/joint must be free of moisture, dust, loose aggregate and other contaminates. The substrate and air temperatures must be 40°F or above. Sawing, routing, and/or sandblasting are the preferred methods of preparation. Use oil-free compressed air and heat to clean and dry the crack/joint immediately prior to sealing. Cracks/joints should be sized so that the maximum extension and compression do not exceed 50% of the width. Best results are obtained when the cracks/joints are opened at least ½ inch wide.