Rockwool FirePro DuctRock Slab

The Rockwool Firepro DuctRock Slab has two purposes within construction to provide thermal insulation to ductwork to reduce thermal transmission. But arguably, the most important role for the DuctRock slab is to provide up to 2-hours of fire protection (in the correct system, specified in the manufactures document) to ductworks henceforth, reducing the opportunity for the spread of fire throughout a building’s infrastructure. The DuckRock slab archives a Euroclass A1 reaction to fire and come in thicknesses of 60-90mm with black foil facing.

*Always Refer Back To The Manufacturers Specification Document

Download Specification


Tested to both BS EN 1366:Part 1 and BS EN 1366:Part 8 FirePro® DuctRock® Slab is capable of providing up to 2 hours fire resistance to rectangular ventilation and smoke extract ductwork.

The black foil surface provides a robust high-performance finish whilst making it easy to differentiate from our traditional Fire Duct System.


FIREPRO® DuctRock® Slab is manufactured with high density, non-combustible stone wool insulation and finished with a high emissivity black foil facing. Available in three thicknesses DuctRock® Slab is easy to handle, simple to install and capable of achieving fire resistance of up to EI 120.

FirePro® Glue and a high performance Black Aluminium Foil Tape are also readily available from ROCKWOOL for sealing all board joints.

Health & Safety

The safety of ROCKWOOL stone wool is confirmed by current UK and Republic of Ireland health & safety regulations and EU directive 97/69/EC:ROCKWOOL fibres are not classified as a possible human carcinogen.

A Material Safety Data Sheet is available and can be downloaded from to assist in the preparation of risk assessments, as required by the Control of Substances Hazardous to Health Regulations (COSHH).

Enquire about this product

    We Stock Market Leading Suppliers