Item #885744

Teakdecking Systems SIS-440 Teak Deck Caulking

56 Reviews
$24.99 - $26.99
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          Image of : Teakdecking Systems SIS-440 Teak Deck Caulking Teakdecking Systems SIS-440 Teak Deck Caulking Item # 885744


          Teakdecking Systems® SIS-440 Teak Deck 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. SIS 440 Caulking was developed mainly for teak decking seams and provides better adhesion, longevity and appearance as compared to polysulfides, polyurethanes and MS polymers.


          • Neutral-cure caulk reacts with atmospheric moisture to form a tough yet flexible, solid rubber compound
          • Does not sag during cure, adheres permanently and stays flexible
          • Cured sealant is non-corrosive to all substrates
          • Easy one-step application with no primer required
          • Highest-rated UV resistance
          • Outstanding temperature stability and chemical resistance


          • Material: One-part polymer
          • Container: 10.3 oz. (305 ml) cartridge
          • Tack-free time: 20 - 40 minutes
          • Cure rime: 36 - 48 hours @ 68°F
          • Tensile strength: 300 psi

          Note: Tack-free and cure times are subject to atmospheric conditions

          Teakdecking Systems Product Brochure (7.39 MB)

          Teakdecking Systems Teak Caulking (SIS 440) Application Instructions

          Teakdecking Systems SIS 440 Teak Deck Caulking Yield

          Safety Data Sheet

          Part Numbers for Teakdecking Systems SIS-440 Teak Deck Caulking



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          Rated 5 out of 5 by from Teak Deck Systems Products and support I highly recommend SIS 440 Chaulk. I redid my 1997 Eastbay 40 FLybridge and my teak decking came out looking like new. Do not skimp when applying chaulk! I also used their tools and Teakdecking Systems Water Based Sealer and Protector. Call support if you have any questions!
          Date published: 2023-09-20
          Rated 5 out of 5 by from Teak Deck Caulking A great product. Set up overnight. Came out nice. Easy to work with.
          Date published: 2023-07-17
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