Asphalt emulsion: The most common driveway sealer is asphalt emulsion ... From there, we perused hundreds of user reviews to ...

"In the late 1970s, the use of coal-tar based sealant was discouraged in favor of fiber-filled, asphalt based ... readers that the best temperature for applying sealer is 50°F and rising.

Assuming this is the case, that equals in the neighborhood of 18,000,000 potential customers for a driveway sealing business. To keep initial start-up costs to a minimum, simply use asphalt ...