Raven 155 is a waterborne epoxy used to reduce water vapor transmission and seal green concrete surfaces prior to topcoat application. It is a two component waterborne epoxy with ultra-low viscosity.
Use as a penetrating primer/sealer for new and existing concrete and as a polymer additive with high-early strength repair mortars. This product is particularly suitable to prevent out-gassing through topcoats and Raven recommends using Raven 155 to prime concrete exhibiting a moisture vapor emission rate greater than 3 lbs/1,000 ft2/24 hours, when tested according to ASTM F 1869.
