650 LT Liquid Adhesive is a rubber based adhesive in solvent solution which is specifically formulated to provide excellent adhesion with the Polyguard® waterproofing membranes under many kinds of surface conditions. It is designed for use as a primer for all structural concrete, masonry, or wood surfaces on which waterproofing membranes will be applied, and can be installed on applications down to 25°F (-4°C). 650 LT Liquid Adhesive is an integral part of the Polyguard Waterproofing System and sufficient liquid adhesive must be used on dry surfaces to condition them to be dust free so the substrate is suitable for the application of Polyguard Waterproofing Membranes.