Nexseal Damp-proofer is a unique chemical treatment designed to waterproof and protect concrete from water penetration of pores and capillaries. Nexseal Damp-proofer is chemically similar to Nexseal 1000 only less potent and is purposely designed to be a surface applied treatment that penetrates into concrete for an in-depth waterproofing solution. Nexseal Damp-proofer is used as a waterproofing product where hydrostatic pressure is minor or not relevant. Nexseal Damp-proofer also makes a cost effective alternative as a second coat for Nexseal 1000. Nexseal Damp-proofer works within the concrete's substrate to react with un-hydrated cement particles and water to grow crystals within the concrete mass. In doing so it will make the concrete permanently waterproof.