SeaRox® FB 6020
Optimize marine safety and efficiency with SeaRox FB 6020: lightweight, non-combustible fire boards offering certified fire protection, thermal insulation, and acoustic comfort for demanding maritime environments.
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Industry and product areas
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- SeaRox®
- Marine & Offshore
- Lightweight
- Fire protection
About SeaRox® FB 6020
Made from non-combustible natural volcanic rock, this lightweight fire slab is designed to reduce weight in maritime installations for enhanced fuel efficiency, added carrying capacity, and improved vessel stability. It delivers the high standards in fire resistance, thermal, and acoustic performance you expect from ROCKWOOL® SeaRox stone wool insulation. 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 6020 stone wool fire boards are suitable for fire-rated A-class steel bulkhead and deck constructions where low weight plays an important role, such as onboard passenger ships, naval ships 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 | 40 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t=70mm unfaced: αw = 0,95 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 6020
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.








