CRISTALBLOC is waterproofing with high protection capabilities of treated surfaces and, as a result, gives shine and brilliance to cement products and natural stones. CRISTALBLOC has a wet effect, consolidates crumbly surface particles, preventing dust from leaking and salts appearing. CRISTALBLOC is resistant to tread, water, oil, detergents and diluted acids. It does not turn yellow. Ideal for water-oil repellent treatment of concrete, terracotta, tuff, stone and gritted surfaces. Ideal internally and externally.