Wykamol hydradry is the ideal slurry waterproofing system for basement and cellar conversions. Hydradry is a cementitious compound designed for applications to the internal surfaces of walls and the associated solid floors of cellars and basements that are subject to penetrating dampness. The hydradry system prevents ingress of liquid water and works by forming a physical and chemical bond with the substrate. It thus provides a monolithic waterproof membrane - yet still allows vapour transmission. Suitable for brick, stone, block and concrete, hydradry can be applied using a brush after being mixed with water into a paste.