Pressure wash, let your pad dry for 24 hrs then apply. I used 5 gal which was almost covered my 1200 square ft driveway. let it sit for two days with no foot traffic and three drays no car parked on the pad.. the product is easy to apply, odorless, and has good coverage. I hope it will hold as marketed 5-7 yrs. the water stays on top and drys quicly. I recommended it for home owners.