Surfaces should be clean, dry, and solid before application. For mirrors up to 6 mm thick, apply adhesive to both surfaces using a notched trowel (3 mm). Allow the adhesive to dry for 10-15 minutes before fixing the mirror in position and pressing firmly. If necessary, support the mirror for 24 hours or longer, depending on temperature and surface porosity. Cleaning can be done with Zwaluw Cleaner. Adhesive and Tape