This sealer may be used on most concrete, masonry, brick and unglazed tile to protect and slightly enhance the surface appearance. It is a UV resistant, durable, non-yellowing sealer that provides excellent stain resistance against water, oil, grease and acids on interior and exterior surfaces. It is re-coatable. It is LEED eligible.Water based. Film forming. Medium gloss. Easy to apply. Excellent stain resistance. Breathable. Resists mold and algae. Low VOC formula.