With today's technology, we're not going to expect an asphalt-based sealer to go mile for mile with a coal tar emulsion. That may change in the future" Mariani says GemSeal's asphalt-based sealer ...

Coal tar sealant: The number-one sealant to ... there are three types of driveway sealers. Asphalt emulsion: The most common ...

If coal tar sealer supply is disrupted, contractors who also apply asphalt emulsion sealer or asphalt/coal tar blends will continue to have material to work with. And if you start the season ...