average cost to have a driveway spray seal coated
1 Sealcoat that is brushed on will usually cost anywhere from $.07 â $.10 per square foot, depending on the condition of the driveway, and will last 1-2 years. 2  Asphalt that has never been sealcoated or has not been done in many years will absorb much more sealer and will therefore cost a little more.