Can I use mastic adhesive 4323 to seal a concrete wall in my basement?
It is construction adhesive, not waterproofing.. “3M™ Scotch-Grip™ Construction Mastic Adhesive 4323, 5 gal Pail High performance panel and construction adhesive for both interior and exterior use. This versatile adhesive bonds to many hardwoods, plywood, concrete, aluminum, steel, polystyrene foam, FRP, and some plastics.” Sources: http://www.3mestore.com/62439285305.