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Product images: the manufacturer (official).
Fire insulation · ducts and services
Fire-resistant insulation blankets and duct wraps
Ducts that pass through fire compartments must keep fire and heat in – wrap systems make them fire-rated.
- Ducts, grease ducts, services
- Use
- Stone wool or fibre blanket, foil-faced
- Material
- Per tested wrap system
- Rating
Supplied by World Steel with your steel building or on its own – one order, one shipment, one partner.
Overview
About Fire-resistant insulation blankets and duct wraps
Fire-resistant duct wraps are tested on the duct type and size they protect: EN 1366-1 for ventilation ducts (classified under EN 13501-3), UL 2221 / ASTM E2336 for grease duct enclosures and AS 1530.4 in Australia.
Layer count, overlaps, pins, bands and penetration details through walls and floors are defined by the tested system.
A non-combustible blanket alone does not make a duct fire-rated – the tested system does.
Key benefits
- Fire-rates ductwork without builders’ work shafts
- Thin, light wrap systems
- Grease-duct versions for kitchens
- Tested penetration details
World Steel · building envelope hub
How we use Fire-resistant insulation blankets and duct wraps in steel buildings
World Steel coordinates duct supports and penetrations with the steel structure and the fire-rated walls and floors.
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 Fire-resistant insulation blankets and duct wraps is used
- Ventilation and smoke extract ducts
- Kitchen grease ducts
- Cable and pipe enclosures
Technical data
Fire-resistant insulation blankets and duct wraps – technical properties
Typical properties and standards
| Property | Unit | Value |
|---|---|---|
| Fire test | — | EN 1366-1 / EN 13501-3 · UL 2221 / ASTM E2336 · AS 1530.4 |
| Reaction to fire | — | EN 13501-1 · ASTM E84 · ASTM E136 |
| Installation | — | Per tested system – layers, pins, banding |
Values as published by the manufacturer for this market. Always check the current data sheet and the approvals required for your project before ordering.
High-temperature insulation
Related products
← High-temperature and fire insulationOther Insulation Materials – PU/PIR, EPS, XPS, PE Foam →
FAQ
Frequently asked questions
Is a mineral wool blanket enough to fire-rate a duct?
Only within a tested wrap system for that duct type – the number of layers, fixings and penetration details matter.
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.