If you have pets or children who like to draw on your asphalt driveway with chalk, avoid a coal tar sealant. There are ...

Dubey says contractors can protect sealer from bacterial spoilage. He says coal tar-based sealer can develop an odor of Hydrogen Sulfide (rotten egg smell), which results from a reduction of ...

which started producing refined coal tar sealer in the early 1970s and an asphalt-based sealer in the 1980s. "So there's always going to be a desire on the part of the consumer for some type of ...