There are many manufactures of sealers, from solvents to acrylic urethane. Epoxies, acrylic, and urethane sealers come in water-based versions and solvent-based versions, including combinations of both. The biggest difference between the two is the VOC content. The sheen and life of the product determines how often it lasts before needing to be reapplied. Solvent-based acrylics tend yellow overtime and don’t allow the concrete breathe. Epoxies are the strongest sealers, but are best used for smoother surfaces and more for indoor or warehouse floor application. The best sealers for paving stones are water-based urethane. They are algae and mold inhibitors, allow superior joint stabilization, they are environmentally safe, its UV Protection will not harm vegetation, and it is VOC Compliant in all 50 States. Well-trained Gappsi personnel can apply paving stone sealer products achieving the best results.
Yes! All concrete and paver surfaces should be cleaned before applying any sealer coating. It is very important that the surface is clean because any stains or materials that get trapped under the sealer will not be able to be cleaned after it’s sealed. Pressure washing pavers is just as important as sealing it.
Using the wrong pressure washing tools could also hurt the pavers. A pressure washer with the wrong nozzle could mark or wear the pavers. The best recommended tool is a high volume, low pressure, hot water pressure washer. The hot water cleans the pavers and prepares the surface for the best result sealing job.