TDS SIS440 Caulk


SIS440 was strictly developed by TDS for teak deck seams. It is 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 is better than the polysulfides, polyurethanes and MS polymers. It has the highest rating resistance to UV, excellent resistance to chemicals and excellent temperature stability.

Out of stock



SIS-440 Teak Deck Caulking is a one-part, paste-like neutral cure caulk which, when exposed to moisture in the air, reacts to form a tough, flexible solid rubber compound.  The sealant does not sag during cure, and has excellent temperature stability and chemical resistance when cured. Because the sealant is neutral cure, it is non-corrosive to all substrates.

We are currently out of stock of all TDS SIS440 Caulk. 

  • 25 years experience
  • 18 month shelf-life
  • Stays flexible
  • Cures rapidly
  • Adheres permanently
  • Minimum sag and shrinkage
  • Highest rated resistance to UV
  • Easy to work
  • Black, White and Gray
  • Available in Cartridges & Sausages

Additional information


Black, Grey, White


Cartridge, Sausage