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Product images: the manufacturer (official).
Fire-rated panels · walls
Stone wool sandwich wall panels
Two coated steel skins bonded to a stone wool core, fixed to the girts of the steel frame – the external wall and its fire performance arrive as one product.
- Stone (mineral) wool, non-combustible
- Core
- External walls, fire walls
- Use
- Per tested system and thickness
- Rating
Supplied by World Steel with your steel building or on its own – one order, one shipment, one partner.
Overview
About Stone wool sandwich wall panels
Stone wool cores do not add fuel to a fire; the reaction-to-fire class of the whole panel (for example A2-s1,d0 under EN 13501-1) depends on the facings, adhesive and coating.
Fire resistance (EI) is a property of the tested wall system – panel thickness, core density, joints, fixings and supporting steel – classified under EN 13501-2 from EN 1364-1 tests, or AS 1530.4 / ASTM E119 elsewhere.
Insurer approvals such as FM 4880/4881 or LPS 1181 are panel-specific and are checked when the insurer requires them.
Key benefits
- Non-combustible core
- Fire resistance and insulation in one layer
- Fast, dry installation on steel girts
- Good acoustic performance
World Steel · building envelope hub
How we use Stone wool sandwich wall panels in steel buildings
World Steel supplies wall panels with the steel frame: girt spacing, panel spans, flashings and fixings are detailed in the same model so the tested system is reproduced on site.
Product-specific test reports, classification reports and certificates are supplied for the product selected for each project – this page describes the product type, not a certified product.
- 01Specified with the structure – thickness, density and facing matched to the roof, wall and fire design.
- 02Quantities taken from the same 3D model as the steel, purlins and cladding.
- 03Packed and shipped with the steel package – one delivery schedule to site.
Applications
Where Stone wool sandwich wall panels is used
- Industrial and manufacturing buildings
- Logistics and cold-chain facilities
- Fire walls between compartments
Technical data
Stone wool sandwich wall panels – technical properties
Typical properties and standards
| Property | Unit | Value |
|---|---|---|
| Core material | — | Stone wool, fibres orientated for strength |
| Thickness range | mm | Typically 50 – 200, by thermal and fire requirement |
| Reaction to fire | — | EN 13501-1 · ASTM E84 · AS 1530.3 / AS 5113 for façades |
| Fire resistance | — | EN 1364-1 / EN 13501-2 · ASTM E119 · AS 1530.4 – per tested system |
| Insurer approvals | — | FM 4880 / 4881, LPS 1181 – where required |
Values as published by the manufacturer for this market. Always check the current data sheet and the approvals required for your project before ordering.
Fire-rated panels
Related products
Fire-rated panels · roofsStone wool sandwich roof panelsView product →
Fire-rated panels · interiorsFire-rated partition and ceiling panelsView product →
Fire-rated panels · compartment wallsFire compartment wall systemsView product →← Fire-rated sandwich panelsFire-Rated Building Systems – Panels, Doors, Glazing, Shutters and Curtains →
FAQ
Frequently asked questions
Does a stone wool core make the wall fire-rated?
Not on its own. A non-combustible core is a material property; a fire-resistance rating comes from a tested wall system with its thickness, joints and fixings.
Is this product certified?
Certification belongs to a specific manufacturer’s product or tested system. We supply the test report, classification or listing accepted in your market for the product selected – it is confirmed per project, never assumed.
One partner for structure and envelope
Send us your drawings or bill of quantities – we quote the steel, insulation, boards and ceilings together and ship them as one package.