Skip to main content

Caulk SIS 440

Photo of 3 cartidges of SIS440 Teak Deck Caulking in Black, Gray and White; and 1 photo of SIS 440 sausage package
Part NumberDescriptionPackaging

Teak Caulk Cartridge 10.3 oz (305ml) – Black

1 each

Teak Caulk Cartridge 10.3 oz (305 ml) – White**

1 each

Teak Caulk Cartridge 10.3 oz (305ml) – Gray**

1 each

Teak Caulk Sausage 20 oz (592ml) – Black

1 each

Teak Caulk Sausage 20 oz (592ml) – White**

1 each

Teak Caulk Sausage 20 oz (592ml) – Gray**

1 each

“The Professional’s Choice”

SIS 440 Teak Deck Caulking

  • One-part polymer adhesive/sealant neutral cure
  • No primer necessary*
  • Over 35 years of proven success

SIS 440 Caulking provides the durability boat owners require. It is a one-part, paste-like neutral cure formulation and when exposed to moisture in the air, it reacts to form a tough, flexible, solid rubber. The material does not sag during cure. Once cured, it has excellent temperature stability and chemical resistance. This neutral cure is non-corrosive to all substrates.

SIS 440 Caulking was developed mainly for teak decking seams. This silane polymer cures to provide better adhesion, longevity and appearance as compared to polysulfides, polyurethanes and MS polymers. SIS 440 has the highest rating resistance to UV, excellent resistance to chemicals and excellent temperature stability.

*SIS 440 Caulking is a well-tested and proven product in hot or cold climates, and no primer is needed when Application Instructions on packaging are followed as written.

Caulk Yield Calculator

Linear Feet Yield

Related products you may also like
Photo of caulk removal tool also known as a "reefing hook"

Caulk Removal Tool

Photo of seam sander and refill sandpaper

Seam Sander