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Fire Duct Slab
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ROCKWOOL® Fire Duct Systems provide stability and integrity to steel ductwork in the event of a fire. The system also gives thermal and acoustic protection and is suitable for vertical and horizontal ducts. Three product variants are available:Fire Duct Slab for rectangular ductsFire Duct Section for circular ducts up to 356mmFire Duct PSM for large circular ducts over 406mm.

Products can be selected to achieve 30, 60, 90 or 120 minutes fire protection. AdvantagesNon-combustible (Euroclass A1)Fully certified to BS 476–24 (duct types A and B)Single layer enables verification of system installationSpace efficient, non-brittle, strong and safeFire protection plus acoustic and thermal benefitsCan be used to create a vapour barrierLight, easy to handle and simple to fixCan be cut and shaped using a knife or saw


ROCKWOOL® Fire Duct Systems provide fire protection and thermal and acoustic insulation for circular and rectangular steel ductwork.

Fire Properties

The Fire Duct products have been tested and assessed by BRE LPC in accordance with BS 476 – 24, ‘ Fire tests on building materials and structures – Methods for determination of the fire resistance of ventilation ducts’. Fire Duct products can be used to provide fire protection to horizontal, vertical, rectangular, circular, ventilation and smoke extract steel ductwork fully in accordance with BS 476 – 24, ducts ‘Type A’ and ‘Type B’, ‘Fire outside duct’ and ‘Fire inside duct’. The 1⁄2, 1, 11⁄2, and 2 hour periods of fire resistance stated in this manual are for stability, integrity and insulation in equal measure. For example, the 60 minutes duct constructions shown are certified for 60 mins stability, 60 mins integrity and 60 mins insulation. For more information refer to the FIREPRO® Book or the prodcut data sheet.

Third Party Approvals

Fire Duct System holds Loss Prevention Certification Board approval LPCB 022f.Clicking on the "Where Can I Buy Ductslab" Tab will open a new window.

You can download a data sheet for Rockwool Ductslab & Ductwrap by clicking on the following Link:

Rockwool Fire Duct