Rendering of concrete clinker facades and ceramic tiles (poorly absorbent substrates)

If the substrate is not only poorly absorbent but also smooth (for. a low grip of shuttering concrete or dense clinker), a conventional spray application, even with a stipple coat may not achieve sufficient adhesion. A mineral bonding layer as substrate preparation is preferable here. Conventional lime-cement plasters are the best solution for these substrates due to their low water content. For tile substrates, request technical advice from the Technical Department for Applications of Saint-Gobain Weber.