Stonecare4U's Masonry Sealer is formulated with resins that seal and protect masonry surfaces whilst offering excellent water repellency and helping to reduce efflorescence, green growth and algae growth. It offers long-lasting protection and once sealed, the surface requires very little maintenance. It’s the quick and easy solution to sealing your masonry, blockwork and brickwork and it’s ready to apply straight from the bottle! MAINTENANCE: Sealed areas can be treated with mild, ph neutral cleaners or a very low concentration of our outdoor cleaner range. In short, please do not use harsh or abrasive cleaning agents as this can have a negative effect on the treated surface. COVERAGE: Apply undiluted, up to 15m² per litre per coat. Dependant on the porosity of the surface. Check the surface after application of the Essential Masonry Sealer to ensure the full effectiveness of the repellent.