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SIS 440 Caulking

Deck Maintenance Products

SIS 440 Caulking

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SIS 440 caulking is our top selling product, and a proven leader in the marine industry. It is used by our team on every teak deck we manufacture. No primer is required for this one-part, paste-like neutral cure patented formulation, which when exposed to moisture in the air, reacts to form a tough, flexible solid rubber.

This neutral cure is non-corrosive to all substrates. It provides the durability required in the marine environment and has excellent temperature stability and chemical resistance once cured.

  • One-part polymer adhesive/sealant neutral cure
  • No primer necessary
  • One-Part Silane Polymer forms a Solid Rubber Compound
  • Stays flexible and cures rapidly
  • Adheres permanently
  • Minimum sag and shrinkage
  • Highest rated resistance to UV and works in cold climates
  • Used by boat builders, boat repair yards, marinas, private boat owners, cruise ships, and boat chandleries
  • Comes in black, white, and gray
  • In cartridge 10 oz (305 mL) and sausage 20 oz (592 mL) package
  • 15-month shelf life from Date of Manufacture

Part Numbers

Part NumberDescriptionPackaging
116-001SIS 440 Teak Caulk 10.3 oz (305 mL) Cartridge – Black12 Cartridges/Case
116-002SIS 440 Teak Caulk 10.3 oz (305 mL) Cartridge – White12 Cartridges/Case
116-003SIS 440 Teak Caulk 10.3 oz (305 mL) Cartridge – Gray12 Cartridges/Case
116-004SIS 440 Teak Caulk 20 oz (592 mL) Sausage – Black12 Sausages/Case
116-005SIS 440 Teak Caulk 20 oz (592 mL) Sausage – White12 Sausages/Case
116-006SIS 440 Teak Caulk 20 oz (592 mL) Sausage – Gray12 Sausages/Case

Caulk Yield Calculator

Enter seam dimensions and length above to calculate

Note: This calculates the exact fill volume. We recommend adding 20–25% overage to account for the slight crown left during application and material lost during the spooning/tooling process.

Frequently Asked Questions

What is SIS 440 Caulking used for?
SIS 440 caulking is our top selling product, and a proven leader in the marine industry. It is used by our team on every teak deck we manufacture. No primer is required for this one-part, paste-like neutral cure patented formulation, which when exposed to moisture in the air, reacts to form a tough, flexible solid rubber.
Who typically uses SIS 440 Caulking?
SIS 440 Caulking is used by marine professionals, boatyards, installers, captains, and yacht owners maintaining teak and composite decks.
Where can I find product documentation?
Product documentation, technical data sheets, and downloads are available on this product page where provided. Contact Teakdecking Systems for further technical support.

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