We offer Integral Waterproofing Admixture. Description:conpro iw-302 is normal setting, integral cement waterproofing compound that makes concrete resist water through hydrostatic pressure or capillary action. conpro iw -302 complies with is 2645-1975. uses: conpro iw-302 is used for waterproofing of concrete and mortar in : roofs, terraces, balconies water tanks, swimming pools, silos etc.basements, toilets areas exposed to water/moisture etc. Advantages: conpro iw- 302 has following advantages: reduces permeability of concrete to a large extent.arrests saltpetre/efflorescence action prevents bleeding and segregation.allows normal breathing of concrete/mortar.improves workability of concrete.reduces w/c ratio. prevents corrosion of steel reinforcement. chloride free.