The discussion of pros and cons between coal tar-based and asphalt-based seal coat materials is once again the hot topic within the industry. We find ourselves debating long-held industry tradition and a deserved feeling of “it it’s not broke don’t fix it” with the reality that technologies exist that can actually improve on a good thing. Throw in what has become a massive environmentally conscious “Green” movement, and you’ve got the makings of a perfect storm of circumstances that threatens to turn the seal coating industry on its head. Read more at link below. http://www.pavemanpro.com/article/a_discussion_of_coal_tar_versus_asphalt_based_sealcoats/