Studies Raise Questions about Pavement Sealers
1 May 2012 . Airborne emissions and stray dust from coal tar–based sealers, one . Asphalt is used extensively to pave parking lots, driveways, airport . coal tar–based sealers, and at least 7 national or regional retailers have stopped selling them.10 . Agway, Do It Best, Home Depot, Lowe's, Menards, and True Value.