Hurricane CAT 5 is the ultimate in 2-part sealers made with a new generation urethane providing ultra-durability surface protection. It's Armor Bond joint stabilization hardens joint sand to prevent sand washout. It provides the deepest color enhancement with gloss finish using T3 True Tone Technology. It has an added antifungal that protects the sealer film from mold, moss and algae. Hurricane CAT 5 is a super concentrated water based film forming sealer that comes as a kit and requires mixing and dilution before use. Recommended for professional use only.