Volclay waterproofing products are manufactured from natural sodium bentonite a non-toxic mineral clay of volcanic origin found exclusively in the Black Hills region of the United States, and is one of the most enviromentally friendly waterproofing materials in the world. Adhesives and primers are not required and as the membrane is self healing nails can are used to fix into place. Volclay is approved by the Green Building Council in the United States. Volclay contains no Volatile Organic Compounds (VOC) VOCs are solvent emissions released into the atmosphere. Volclay can be used to tank/waterproof back filled retaining walls,masonry block CMU block walls, precast panels,insitu pour wall, shotcrete retention or retaining walls, secant pile, auger pile, pile retaining walls, and is ideal for waterproofing living spaces below grade as well as lift pits, slabs , cellars. Plaza decks or podium decks with a wear slab or paver topping completes the range.