Fast Aqua is a one-component, liquid mass for waterproofing substrates before fixing ceramic tiles inside the building. It is mainly used for sealing walls and floors in rooms with non-pressurized water effects, such as: bathrooms, showers, toilets, kitchens, dryers, etc., except for places exposed to permanent water (e.g. baths). The mass is particularly applicable in wet areas of these rooms, i.e. around shower cabins, washbasins, bathtubs, a shower tray and a sink.