The GUARDIAN CRACK REPAIR SYSTEM™ is a manufactured laminate consisting of our specialized fabric with an applied adhesive that is installed directly to a previously coated asphalt or concrete surface over properly prepared cracks. Once installed, industry standard acrylic coatings are applied to restore the playing finish. GUARDIAN CRACK REPAIR SYSTEM, LLC, strongly recommends that all surface preparation (cleaning and crack repair) methods follow guidelines and recommendations as established by the American Sports Builders Association.