Your interior brick veneer wall can present a warm and rustic look; but unless you seal it, it will likely be troublesome for you to remove liquid-based stains.
Before sealing your veneer, use soap and water to clean it. For soiled grout, use a grout cleaner.
Protecting Your Floors
Protect your floor from sealer by applying painter’s tape to the edges that might inadvertently get sealer on them. Lay a sheet of plastic with one edge beneath the tape.
Use a wide paint brush to apply sealer to larger brick veneer areas. Use a smaller brush to apply sealer to joints.