Sealcoating: Don't be scammed by a drive-by driveway ...- asphalt driveway sealer reviews ,The scenarioA contractor knocks on your door unannounced and offers to sealcoat your asphalt driveway on the spot. ... All Product Reviews. Appliances. Dishwashers;OT - Best driveway sealer? - practicalmachinist.com · I've worked with asphalt sealers for some 40 years. yikes i'm old Asphalt emulsions; waste of time and money, cheap way to get your driveway black.