PRATIKO MASTIC is a flexible bituminous mastic reinforced with synthetic fibers which, once dry, forms a plasticized layer with excellent adhesion. PRATIKO MASTIC has an excellent adhesion and durability on bituminous surfaces, galvanized sheets, smooth and corrugated metal sheets, concrete, fiber cement, etc. which remains constant in time. The product has excellent resistance to aging, U.V. ray and atmospheric aggression. PRATIKO MASTIC can also be applied at temperatures below 0°C, on slightly humid surfaces and is compatible with all types of bituminous membranes.