SeaRox® SL 340
SeaRox® SL 340 semi-rigid stone wool slabs offer easy-to-install sound absorption for decks and bulkheads, creating quieter spaces in marine applications.
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Industry and product areas
- Marine & Offshore
- Sound reduction
- Explore by product range
- SeaRox®
About SeaRox® SL 340
Engineered for efficient sound absorption in marine applications, ROCKWOOL SeaRox SL 340 semi-rigid stone wool insulation slabs create quieter spaces aboard ships and offshore platforms. The boards are easy to handle and install and are available with reinforced aluminium (ALU), black tissue (TB), and glass cloth (GW) facings on request. Build with confidence: trust SeaRox SL 340 stone wool boards to deliver acoustic comfort.
- Resists water absorption to deliver long-term durability
- Non-combustible and fire resistant
- Excellent acoustic performance for noise control
- Uniform appearance – easy to handle and cut-to-size on site
Application
Use ROCKWOOL SeaRox SL 340 stone wool slabs when efficient acoustic insulation of bulkheads and decks is required to improve onboard comfort.
Available dimensions
Facing information
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 | 80 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t= 50 mm unfaced αw = 0,9 t= 2x50 mm unfaced αw = 0,95 | |
| Reaction to fire | IMO 2010 FTPC | Non-combustible Low flame-spread properties |
Downloads
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SeaRox SL 340
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.