Magnum Systems's Preventive Roof Maintenance Agreement is intended to provide owners of facilities an alternative to manufacturer's roofing system warranties, which generally provide no protection against conditions, which usually result in leakage to the interior, and no provision for preventive maintenance of roofing assemblies. Manufacturer's warranties issued by manufacturers become potentially effective only when the roof actively leaks; there is no provision for anticipation of leakage nor is there provision for corrective action to all roof assembly components affected by leakage.