All of our products have a built in sealer, so a finishing sealer is totally optional. We offer an antiquing gel (much like a glaze with a built in topcoat) and a Satin Topcoat (for those who want more shine and for those who are painting countertops and needing additional wear layers).
Please note, neither item is needed for added durability to our products. What is built into the paint, is as durable or more than anything you're going to put on top of it. Remember, our paint has an exterior grade topcoat built in.