How do you seal kitchen backsplash grout?
How To: Seal Grout STEP 1: Clean and repair grout. Before applying a sealer, be sure to clean your grout thoroughly and repair any cracks or crumbles in the grout lines. STEP 2: Choose your sealer. STEP 3: Choose your sealer applicator. STEP 4: Apply sealer slowly and deliberately. STEP 5: Apply a second coat of sealer.