Asphalt Sealcoats Can Be Harmful To Health And Environment ...
Wednesday, May 18, 2016, 9:20am. Spring is in the air, and with it the sharp odor of freshly sealed asphalt driveways and parking lots. Used to improve the appearance and prolong the life of asphalt pavement, some sealcoats can be as toxic as they smell: Asphalt sealcoats containing coal tar, a byproduct of steel production, are a known health ...