Grouting compounds Non-shrink, free flow, cementitious grout.For general purpose, non-shrink grouting applications.25kg bag of Conbextra GPI will yield 13.7Iitres ( WP - 0.19) at flow able consistency 25 kg. of Conbextra GP2 will yield 13.3 liters ( WP - 0.18) at flow able consistency