How to Seal a Paver Driveway

Sealing a paver driveway is not absolutely necessary, but it does have its advantages. A sealant prevents the pavers from absorbing moisture and eroding, makes stains easier to remove, and can improve the aesthetic appearance of an older driveway with dull, drab pavers. Sealing services are often offered by paver installation businesses, but the materials are all available commercially, so you can easily seal your own paver driveway.

Step 1 - Choose Your Sealer

Choose a paver sealer that is appropriate for the material of your pavers, whether they are clay, brick, or concrete. Choose a sealant that is solvent-based, not water-based, as a water-based sealant will not hold up to the wear and tear a driveway endures. Calculate the square footage of your driveway to determine how much sealant you will use.

Step 2 - Clean Your Surface

Your paver driveway must be completely clean and dry before sealant can be applied. Check the weather forecast, and do not start the project if there is any chance of rain within the next few days, or if there has been rain in the past 24 hours. Sweep your driveway clear of large debris first with a broom. Then use a pressure washer to blast away fine debris and stains. Make sure the paver surface is clear of any joining sand you may have blasted out. A mild household detergent may help to remove stains, but avoid anything with harsh chemicals or bleach, which can damage your pavers. If you do use a detergent, go over the driveway with the pressure washer once more to wash away all suds and soap residue.

Allow the driveway to dry overnight. If there is any sign of remaining moisture the next day, do not start sealing—instead, wait until the pavers are completely dry, even if that means giving it another day. Time needed to dry will depend on the climate.

Step 3 - Start Sealing

Read the label on your sealant for any instructions and safety precautions. Start in one corner and use the paint roller to apply the sealant evenly over the paver surface, working backwards. Note that a sponge-type roller will help you avoid picking up any loose joining sand better than a nap-type roller would.

Also note that some sealants can be applied with a spray device called a Chapin 1949; these machines are available to rent. However, double-check first that your sealant can be applied by spray, as some solvent-based sealants are too thick for a spray application.

If desired, a second coat can be applied 2-4 hours after the initial coat. This is typically done for aesthetic purposes, to give the pavers a 'wet look.'

4 - Drying and Cleanup

Wait at least three hours after the final coat before walking on the driveway, and 24 hours before you drive on it. In the meantime, you can use Xylene or a lacquer thinner to clean your tools of the sealant. Both materials are widely available at hardware stores.

Sealing your driveway at least every two years will provide the best protection against the elements and keep the pavers looking good for years to come. In the span of one weekend, your paver driveway can look new again.