Thoroughly rinse and scrub the pavers a day before you seal them. They should be clean and free of grit before the sealing process, but they need to be dry before you can begin. Clear away any grass or weeds hanging over the path or patio.
Pour some of the paver sealant into a paint tray and dip in the roller brush. Roll the brush across the tops of the pavers, working from one end of the path or patio to the other, and making sure not to trap yourself in an island surrounded by wet sealant.
Allow the sealant to dry for at least two hours, then reapply if necessary, or if the directions on your brand of sealant call for a second coat.