Crommelin Waterproofing Membrane Surface Primer is a multipurpose rubber polymer primer designed to enhance adhesion before applying waterproofing membranes. This 1-liter primer is specifically formulated for use on concrete and cementitious substrates, effectively consolidating dusty and powdery surfaces to create an optimal base for membrane application. It features a rapid drying time, allows for high coverage with just one coat, and is non-toxic with low VOC emissions, making it suitable for various indoor and outdoor projects. By improving the adhesion of waterproofing membranes, this primer helps ensure long-lasting protection against water ingress, making it an essential component in effective waterproofing systems.