This is an expensive product, but it's worth every penny. It's the second time that I bought SX5000. The first time it was 5 gallon bucket. I applied it to my driveway. It was a quick job with a garden pump sprayer. There is no discoloration or any other issue. The concrete no longer absorbs water. I'm confident that I'll have the protection I need for the winter. Thank you for a great concrete sealer!