NATURAL STONE SEALER 1LTR - STONE1 Everbuild Natural Stone Sealer is a clear non-hazardous solution, which chemically bonds with the substrate, providing a natural look, water repellency and stain protection on most natural stone/mineral surfaces, inside or outside the home. It protects stone from staining from most liquids, hot cups, wine, coffee, tea, oil, soot, soil, foodstuffs etc. It is suitable for use internally or externally on most natural stone, masonry, cementicious substrates, grout, marble, terracotta, limestone, slate and terrazzo. Ideal for stone fireplace surrounds, hearths, floor tiles, paving and worktops.