SeaRox® FB 6040
Suitable for A-class steel and aluminium constructions, ROCKWOOL® SeaRox FB6040 lightweight fire boards offer high fire performance when low weight is an important factor.
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- SeaRox®
- Marine & Offshore
- Lightweight
- Fire protection
About SeaRox® FB 6040
Our lightweight marine insulation is designed to ease the economic and environmental pressures on the global marine industry. Belonging to this innovative range of solutions, SeaRox FB 6040 stone wool fire boards deliver outstanding fire safety, as well as great thermal and acoustic performance. Available with reinforced aluminium or glass cloth facings on request.
- Lightweight to support lower fuel costs
- Resists water absorption to deliver long-term durability
- Tailored for fire-rated constructions
- Excellent acoustic performance for noise control
- Uniform appearance – easy to handle and cut-to-size on site
Application
Use ROCKWOOL SeaRox FB 6040 stone wool boards for fire-rated insulation of A-class steel and aluminium constructions where low weight is important, such as onboard passenger and naval ships and offshore supply vessels.
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 | 60 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t=70 mm unfaced αw = 0,90 | |
| Reaction to fire | IMO 2010 FTPC | Non-combustible Low flame-spread properties Approved for A-class constructions |
Downloads
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SeaRox FB 6040
Download product datasheet

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

SeaRox® A-class brochure
A-class stone wool insulation for marine and offshore applications.

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.








