Air pressed block, light weight smooth surface, absorb water quickly. Mr Andres' site in Indonecia exactly is such case. usually people have to rough wall firstly and damp wall before plastering. Mr Andre chosed big wall rendering machine robot-1200, without damping wall and roughing wall, directly apply little liquid mortar on such kind of wall, it was approved that it's practical. well, there is no absolute success at the first time for single machine while you may be sucessful at the second time, we shall offer you standardized method, working process to help you approaching success which base on our numberous times plastering. but you may be success at the first time by plastering solution experience. EZ RENDA dedicated on comprehensive plastering solution since 2005.