SIS-440 Teak Deck Caulking
SIS440 was strictly developed by Teakdecking Systems® for teak deck seams. It's a well tested and proven product in hot or cold climates and needs no primer. A one-part silane polymer that forms a solid rubber compound, it's better than polysulfides, polyurethanes and MS polymers. It has the highest rating resistance to UV, excellent resistance to chemicals, and excellent temperature stability.