SeaRox® SL 440
SeaRox® SL 440 high density stone wool slab for floating floors requiring load capacity, also it can easily be cut into lamellas for marine panels.
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Industry and product areas
- Marine & Offshore
- Outfitting
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- SeaRox®
About SeaRox® SL 440
Floating floors reduce onboard noise and vibrations, so the insulation must combine load capacity with excellent acoustic, thermal and fire safe performance. SeaRox® SL 440 is a high density rigid stone wool slab engineered for floating floor constructions. Furthermore, the slabs are ideal for creating bespoke panels and panel systems. Neutral glass tissue facing is available upon request.
- 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
Designed for floating floor constructions and panels in marine and offshore vessels. SL 440 slabs can be installed as part of the load bearing deck construction to deliver acoustic insulation as well as fire safety.
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 | 150 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Compressive strength at 10% deformation | kPa | EN 826 | CS(10)30 |
| Sound absorption (directly mounted) | ISO 354 | t=50mm αw = 0,75 | |
| 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 SL 440
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.







