SeaRox® FB 6050
Choose ROCKWOOL® SeaRox FB 6050 for lightweight, certified insulation offering firesafe, thermal, and acoustic protection for steel and aluminium constructions.
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Industry and product areas
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- SeaRox®
- Marine & Offshore
- Lightweight
- Fire protection
About SeaRox® FB 6050
ROCKWOOL SeaRox FB 6050 insulation boards offer firesafe protection for A-class steel and aluminium constructions. They deliver maximum fire safety without excessive weight, ensuring you stay compliant and competitive in today’s complex market. Manufactured from natural volcanic rock, FB 6050 boards also deliver excellent thermal and acoustic insulation performance. Reinforced aluminium foil or glass cloth facings are available 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
SeaRox FB 6050 boards are designed to insulate fire-rated steel and aluminium A-class divisions where low weight is a factor, such as onboard passenger ships, naval vessels, and offshore supply vessels.
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 | 70 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t=30mm unfaced: αw = 0,55 acc. to ISO 354 (evaluated after ISO 11654) | |
| Reaction to fire | IMO 2010 FTPC | Non-combustible Low flame-spread properties Approved for A-class constructions |
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 FB 6050
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.








