When it comes to how to apply granite sealer, we have all the must-know tips and tricks. First, you’ll need to thoroughly clean your surface to ensure all dirt and grime is removed and mark off the area you are focusing on. You won’t want to start with a large area but a smaller, manageable space to ensure it gets really even. Then, pour the sealer, creating a thin layer by spreading with a paintbrush or cloth. Allow it to dry, then clean it and buff away any excess. Voila – your counters are sealed!