CT1 Blue Unique Sealant & Construction Adhesive Food safe - conforms to ISEGA Standards Anti-fungal and has excellent resistance to chemicals Bonding of Glass, Mirrors, Wood, Polystyrene, metals (inc. lead) Can be over-painted Can be used in all salt-water environments so perfect for marine and boating applications One-stop, multi-purpose, waterproof, hybrid polymer sealant and adhesive, for the occasional user and professional tradesman alike. Sticks to almost any surface without the need for additional fixings, can be used in damp or wet conditions, can even be gunned under water! Countless possibilities for use with CT1 sealant & adhesive. You need one of these in your toolbox!