A one-gallon container covers roughly 125 square feet and dries clear ... no need to add filler before sealing. Because it ...

SC-42 WB Acrylic Sealer is a water-based, clear concrete sealer and glaze. It is designed to seal porous concrete, brick or tiles and previously painted surfaces where a protective high gloss ...

Also, know what the sealer will do on the floor. Does it penetrate the surface and protect the concrete from within? Does it penetrate a little bit and sit on top to act as a sacrificial coating?