[header] How to seal a driveway [title] Measure your driveway to determine how much sealant to purchase. [substeps] The sealant usually comes in 5 gallon (18. 927 liters) containers, which can cover as much as 400 square feet (121.92 meters). [title] Buy your materials. 
[step] You will need the sealant, a crack filler, a push broom and a trowel. These items can be found at hardware and home improvement stores.