What is the best sealer for concrete driveways?
After sealing over 20 driveways with countless concrete sealers we think the Siloxa-Tek line offers the best overall natural finish sealers for concrete. They offer a slip free surface, good stain resistance and excellent salt repellency. There are three products in the Siloxa-Tek line and although they are relatively more expensive than other products on the market, they have a high actives content, long lifespan and are easy to use and apply.
Our Pick: Our favorite product in the Siloxa-Tek line is the Siloxa-Tek 8510. It will resist staining from oils and greases, as well as protect from harmful deicing salts and chlorides while not changing the look or appearance of the concrete itself. In our tests, the high actives content of about 95%, equates to a lifespan of about five years before reapplication is necessary.
Limitations: The stain repellent additive in the Siloxa-Tek 8510 is able to withstand oil and grease staining; however, if left to sit for more than a few hours you will need to use a pressure washer to remove the stain. Pressure washing concrete treated with the Siloxa-Tek 8510 is safe and will not harm the sealer. Since the 8510 is penetrating it is still recommended that spills be cleaned up in a timely manner.
We also like: Like its name suggests, Prosoco Saltguard is a great option for cold weather climates that need protection from deicing salts and chlorides. It is also commonly used in salt air climates and works by reducing chloride penetration. Saltguard also protects against mud splashes and other waterborne contaminants.
Limitations: It is not readily available through big box distribution; however, specialty construction supply houses may sell this product.