Mapeker Flexible Rapid Set Adhesive in Grey is a cement-based adhesive for interior and exterior walls and floors. This rapid-setting adhesive is ideal for fitting ceramic and porcelain tiles and non-moisture sensitive natural stone. Mapeker Flexible Rapid Set Adhesive can also be used to spot bond insulating materials, such as expanded polystyrene and polyurethane, gypsum board, glass and rock wool, wood-cement panels, formed-concrete blocks and sound-deadening panels.