Teakdecking Systems

Teakdecking Systems SIS-440 Teak Deck Caulking

Item: #885744 | Part Number: Not Selected
$22.99 - $24.99
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        Description

        Teakdecking Systems SIS-440 Teak Deck Caulking is a premium one-part, neutral-cure sealant designed specifically for teak decking seams. It cures to a tough, flexible rubber that outperforms traditional polysulfides and polyurethanes with superior adhesion, UV resistance, and long-term durability. Easy to apply with no primer needed, SIS-440 delivers a clean, professional finish that stands up to harsh marine conditions.

        Image of : Teakdecking Systems SIS-440 Teak Deck Caulking Teakdecking Systems SIS-440 Teak Deck Caulking Item # 885744

        Description

        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.

        Features:

        • 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

        Specifications:

        • 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

        Videos

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        Reviews

        Rated 5 out of 5 by from The Best Thing For Teak Using SIS 440 is the best thing you can do for your old and worn teak decking. The product is user friendly and finishes nicely. If you seal up the caulking tube with duct tape the remaining caulking is still usable for many days afterward. This make fixing little holidays in your work easier , and you don’t have to open another tube.
        Date published: 2024-11-06
        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
        Rated 5 out of 5 by from Teakdecking Systems polysulfide caulk Teakdecking Systems polysulfide caulk is excellent on wood for above and below the waterline, don't buy BoatLife polysulfide, its garbage, I've used it recaulking deck seams, within 2 to 3 weeks one third of it had pulled away.
        Date published: 2025-09-30
        Rated 5 out of 5 by from Best caulk you can get for teak decks The best for teak decks! Make sure you snip off a large enough opening, or else the back-pressure will cause the caulk to flow around the ram in the back of the tube.
        Date published: 2025-06-13
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        Teakdecking Systems SIS-440 Teak Deck Caulking
        Total:
        $22.99 - $24.99