How to Seal Concrete Driveways

Sealing your driveway protects it from the elements and keeps it looking new.

Concrete driveways are under constant attack from vehicle traffic, weather conditions, water and deicing salts in cold-winter areas. Your driveway is one of the first things visitors see as they approach your home; keeping it maintained and sealed gives a better appearance and helps prevent the surface breaking down over time. You can seal your concrete driveway yourself, using a penetrating, siloxane water repellent, which provides protection even below the concrete's surface.

Things You'll Need

• Broom
• Hose
• Power washer
• Gloves and protective clothing
• Siloxane sealer
• Brush, roller or garden sprayer
• Sponge
• Soap

Instructions

1. Check the local weather forecast; be sure no rain is expected in your area the day you will be applying the sealer and for 24 hours afterward.

2. Sweep your driveway thoroughly, removing any mud, leaves or debris, and then hose down to remove dust. If there are oil or grease spots, a power washer will help remove them. Let your driveway dry for 24 hours.

3. Put on long sleeves, pants and gloves before getting to work. Your skin should be protected from the sealer.

4. Apply the sealer using a brush, a roller or a garden sprayer. Any of these will get the job done, but a sprayer will make the work faster and easier.

5. Spray a small section at a time, applying sealant in thin, overlapping coats. Apply just enough to see a slight whitish color. Do not overapply. If the sealant forms puddles, spread them with a brush before they dry.

6. Wipe sealant off metal or glass immediately, using a sponge and soapy water.

7. Keep cars off the driveway for 24 hours.

Tips & Warnings

• Reapply sealant to your driveway every three to five years, as weather will break the barrier down over time.

• Not for use on colored concrete

• Concrete must be cured 21 days

• Do not do when rain is forecast for 24 hours

References

• Concrete Ideas: How to Seal Your Concrete Driveway
• Concrete Network: How to Maintain Your Concrete Driveway
• Portland Cement Association: Concrete Driveways