AquaBlok® Rapid is a highly flexible, Class III, rapid drying, waterproofing membrane suitable for internal and external use. Sika® Aqua Blok® Rapid is designed to bond to a wide variety of substrates and is micro fibre reinforced for improved tensile strength and crack bridging. Sika® Aqua Blok® Rapid is perfect suited to cool and cold climates due to it ability to dry and cure at low temperatures.