Toolman Black Tarmac SealerRevive Your Drive With Driveseal !!! Make your tarmac look like new with our top quality Black Tarmac Sealer. Revitalises the look of tarmacadam, protects from moss and weeds, and puts the colour back. 20L Drum Heavy Duty Mix thoroughly before use using a drill paddle. Pour onto surface in manageable amounts and using a soft brush with handle or squeegee, spread evenly over the surface to the recommended thickness of approximately 1. 5 2mm, promptly