SeaRox® SL 740
SeaRox® SL 740 is a low weight, semi rigid stone wool slab that improves onboard thermal comfort and energy efficiency. Available with various facings for vapour control and surface protection.
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Industry and product areas
- Marine & Offshore
- Thermal, comfort
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- SeaRox®
About SeaRox® SL 740
SeaRox SL 740 is a low weight, semi rigid stone wool slab developed for thermal comfort insulation onboard ships and offshore units. It delivers stable thermal performance and easy handling. Available with various reinforced aluminium foil and glass cloth facings upon request. Choose SL 740 when you need a low weight slab that balances thermal comfort, low moisture uptake and the option of factory applied facings to simplify finishing and improve durability.
- Resists water absorption to deliver long-term durability
- Non-combustible and fire resistant
- Uniform appearance – easy to handle and cut-to-size on site
Application
Used for thermal and acoustic insulation of bulkheads and decks on ships and offshore units.
Available dimensions
Facing information
Certificates
Why SeaRox?
SeaRox® marine insulation - Fire safe and thermally efficient
SeaRox® insulation is engineered for the demanding needs of shipbuilding and offshore industries. Its high-quality stone wool provides superior fire protection, excellent acoustic and thermal performance, and long-term durability — all designed to keep people and assets safer at sea.
Tailored solutions — lightweight to standard
Whether you need lightweight or standard solutions, SeaRox® offers tailored products for every application and is delivered to the same exacting standards worldwide. The result: reliable performance that helps create safer, more comfortable onboard and offshore environments.
Product properties
Our products are designed with your specifications in mind:
| Name | Unit | Test standard | Value |
|---|---|---|---|
| Nominal density | kg/m3 | EN 1602 | 45 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t=50mm unfaced αw = 0,75 | |
| Reaction to fire | IMO 2010 FTPC | Non-combustible Low flame-spread properties |
Downloads
Our goal is to help you quickly find the documentation you need. If you’re unable to locate specific information, please reach out - we’re here to support you.

SeaRox SL 740
Download product datasheet

SeaRox® marine and offshore manual
This is a comprehensive technical guide to our SeaRox stone wool insulation.

SeaRox facings brochure
Improve the performance and safety of your SeaRox insulation with specialist pre-applied facings
Online tools
We provide a wide range of free tools to support your work - from online calculators for energy and heat‑loss assessments to a comprehensive online pricing tool Rockprice. Whether you are just starting your project or require technical guidance along the way, we are here to assist you at every stage.
Looking for answers?
If you have technical questions about products or need support for your projects, our technical experts are here to help you.







