Constantine Sealing Service has sealed our driveway twice - first in the summer of 2011 and again this summer of 2013. They 1) fill any cracks first (several hours earlier, if not a day or more before sealing), 2) edge the entire driveway perimeter, 3) remove sod/debris from edging, 4) blow off any dirt, dust, etc., and 5) seal when driveway is fully prepped. All work was done by Trevor Constantine (son of owner Bill) and his team of 2 men. Their work, as well as their sealing product, is exceptionally high quality. Would recommend this company to anyone! Am planning to have them seal our driveway every other year to preserve the integrity of and extend the life of our driveway.