What It Costs
HomeGuide's national averages: $575 to $1,700 to seal a two-car driveway, $250 to $600 for a 10-by-20-foot patio, $120 to $360 for a sidewalk, and $360 to $1,080 for a two-car garage floor, using acrylic or polyurethane. Prices don't include power washing, which HomeGuide puts at 35 to 75 cents per square foot.


