---
product_id: 301687682
title: "Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive"
brand: "teakdecking systems"
price: "€ 60.27"
currency: EUR
in_stock: false
reviews_count: 5
category: "Teakdecking Systems"
url: https://www.desertcart.ie/products/301687682-teakdecking-systems-10oz-marine-caulk-cartridge-white-premium-quality-sis440
store_origin: IE
region: Ireland
---

# Chemical & temperature stable Highest UV resistance 10oz marine-grade cartridge Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive

**Brand:** teakdecking systems
**Price:** € 60.27
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal your deck like a pro—because your boat deserves the best!

## Quick Answers

- **What is this?** Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive by teakdecking systems
- **How much does it cost?** € 60.27 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/301687682-teakdecking-systems-10oz-marine-caulk-cartridge-white-premium-quality-sis440)

## Best For

- teakdecking systems enthusiasts

## Why This Product

- Trusted teakdecking systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Friendly & Safe:** Non-corrosive, solvent-free formula protects both your boat and the environment—work confidently and cleanly.
- • **Effortless Application:** Thixotropic, drip-free paste with anti-mold agents—no primer or solvents needed, saving you time and hassle.
- • **Proven Industry Leader:** Trusted by pros for 35+ years with over 166 miles of seams sealed annually—join the elite circle of marine craftsmen.
- • **Marine-Grade Durability:** Premium one-part silane polymer ensures long-lasting, flexible sealing for teak deck seams.
- • **Flawless Finish Every Time:** Easy to sand and shape, delivering a pristine, first-class appearance that elevates your deck’s aesthetic.

## Overview

Teakdecking Systems SIS440 10oz Marine Caulk is a premium, UV and chemical-resistant silane polymer sealant designed specifically for teak deck seams. It offers superior flexibility, easy sanding, and a primer-free, drip-free application that ensures a first-class finish. With an 18-month shelf life and proven performance in diverse marine environments, it’s the trusted choice for boat builders and enthusiasts aiming for durability and aesthetic excellence.

## Description

SIS440 Caulk is the proven leader in the marine industry and was developed specifically for teak deck seams. 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 compound. The sealant does not sag during cure, and has excellent temperature stability and chemical resistance once cured. Because the sealant is neutral cure, it is non-corrosive to all substrates and will not damage the surrounding environment or structures. Caulk is easy to sand and will not clog sandpaper. Sanding with a fine 100 or 120 grit sandpaper is recommended. White caulk will shrink somewhat when applied. To avoid having low seams, it is recommended that 1 or 2mm extra caulking is left above a fresh seam.Store in a dry area at temperatures above 32°F (0°C) and below 80°F (26°C). Do not expose to direct sunlight, extreme heat, or freezing. The sealant has a shelf life of 18 months from manufacture date. See “BEST USED BY” date on packaging. Not designed for use under the waterline.Other Applications:- Bedding deck equipment/hardware- Bedding parts (steps, pads, etc.)- Caulk seams in other wood decks- Edges around sealed windows- ConstructionAbout TDS SIS440 Caulk:More than 50,000 decks manufactured and installed in 35 years; 166 miles (267 km) of caulked seams per year. Well-d and proven in hot or cold climates. Used by boat builders, boat repair yards, marinas, private boat owners, cruise ships, and ship chandleries.

Review: I live and cruise on a sailboat. Caulking is a fact of life for mariners of all stripes, and there are a variety of types of caulk for different purposes. This one isn't designed as a glue; its tenacity is merely 'good' - but it WILL do all the waterproofing of joints you can imagine, very well. But from an applicator's point of view, it's nirvana. It's water-soluble. That means cleanup is a wipe-off for most stuff, and a water-wet rag/paper towel for any unwanted smears you might leave behind. It's repair-friendly. There were several cases where we had to replace a deck fitting on our toerail - the thing which goes all around the perimeter of the deck. The cured caulk will cut readily with a utility knife; I used a sloped-pointed-ended cut, kind of like  this shape. Out comes the previous fitting. An extended snap-off blade easily removes the caulk from where the fitting sat - or removes the fitting, too, as it remains soft and pliable despite extended exposure to sun and salt water seas. In goes the new fitting, using the same level of caulking as before. With a caulk tool (a small, handled, 3-sizes-rubber-triangle-ended spreader), these replacements easily filled into those point-cuts above. A week later, you have to hunt to find them. It's our go-to caulk for anything needed to keep water out, but not need gluing to keep in place. You'll love it.
Review: We had a leak in our boat, and this held it for us

## Features

- HIGH QUALITY MARINE POLYMER || 10oz cartridge of white caulk - One-part silane polymer - Forms a solid rubber compound with highest rated UV resistance - Excellent resistance to chemicals - Superior temperature stability - Easy to sand - Improves project turnover time
- FLEXIBLE & PRIMER-FREE || Thixotropic paste which does not drip or sag - Contains anti-mold ingredients - Easy to work because it stays flexible - One-step process saves application time - No solvents - Environmentally friendly - Safe for work environment - More economical - Less waste
- FIRST-CLASS APPEARANCE || Use in seams from 3 to 10mm wide to achieve first-class appearance - Seam depth should be equal to or greater than the seam width - Caulk must fill to bottom of seam - Bond-breaker tape recommended for seams of 5mm (3/16”) or deeper - Full depth caulk seams extend teak deck life
- CURE TIME || Cures to provide better adhesion, longevity and appearance as compared to polysulfide, polyurethane and MS polymers - Curing time for SIS440 Caulk in white is 12 days - This is based on seams ¼”x¼” (6.4mmx6.4mm), larger seams may require additional time
- PROPERTIES || Available in black and gray - Product has 18-month shelf life from date of manufacture (printed on bottle) - Meets Federal Specifications & ASTM C920 - Manufactured in an ISO 9001 facility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CFN1MNE |
| ASIN  | B00CFN1MNE |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (25) |
| Customer reviews | 4.0 4.0 out of 5 stars (25) |
| Date First Available | 19 September 2016 |
| Date First Available  | 19 September 2016 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 283 g |
| Item model number | TDS300WT |
| Item model number  | TDS300WT |
| Manufacturer | Teakdecking Systems |
| Manufacturer  | Teakdecking Systems |
| Material | Rubber |
| Part number | TDS300WT |
| Product Dimensions | 5.08 x 5.08 x 28.58 cm; 283.5 g |
| Product Dimensions  | 5.08 x 5.08 x 28.58 cm; 283.5 g |

## Product Details

- **Brand:** Teakdecking Systems
- **Colour:** White
- **Full cure time:** 12 Days
- **Item weight:** 10 Ounces
- **Liquid volume:** 10 Fluid Ounces

## Images

![Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 1](https://m.media-amazon.com/images/I/71UwL9j4r6L.jpg)
![Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 2](https://m.media-amazon.com/images/I/71vwzDKbEgL.jpg)

## Questions & Answers

**Q: Cual es el precio?**
A: Product price will show at the top right hand corner of the listing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***H on 5 January 2024*

I live and cruise on a sailboat. Caulking is a fact of life for mariners of all stripes, and there are a variety of types of caulk for different purposes. This one isn't designed as a glue; its tenacity is merely 'good' - but it WILL do all the waterproofing of joints you can imagine, very well. But from an applicator's point of view, it's nirvana. It's water-soluble. That means cleanup is a wipe-off for most stuff, and a water-wet rag/paper towel for any unwanted smears you might leave behind. It's repair-friendly. There were several cases where we had to replace a deck fitting on our toerail - the thing which goes all around the perimeter of the deck. The cured caulk will cut readily with a utility knife; I used a sloped-pointed-ended cut, kind of like < > this shape. Out comes the previous fitting. An extended snap-off blade easily removes the caulk from where the fitting sat - or removes the fitting, too, as it remains soft and pliable despite extended exposure to sun and salt water seas. In goes the new fitting, using the same level of caulking as before. With a caulk tool (a small, handled, 3-sizes-rubber-triangle-ended spreader), these replacements easily filled into those point-cuts above. A week later, you have to hunt to find them. It's our go-to caulk for anything needed to keep water out, but not need gluing to keep in place. You'll love it.

### ⭐⭐⭐⭐⭐ Review
*by J***. on 21 October 2023*

We had a leak in our boat, and this held it for us

### ⭐⭐⭐ Review
*by N***. on 9 December 2023*

The caulk is very good. Been using it for years. However the cartridge isn’t good. The internal piston doesn’t seal well and caulk is pushed backwards as well - under a very low pressure. They need to learn from 3M on a proper cartridge use. The material is very expensive and the poor cartridge created a significant waste and mess to clean. Moved to the large 20oz. sausage format that naturally works fine.

## Frequently Bought Together

- Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive
- Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive
- Teakdecking Systems Reefing Hook - Designed for Caulk Removal Before Re-Caulking - Blade Width: 2.5mm, Overall Tool Length: 8.5in - Comfortable & Easy to Use

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-13*