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In accordance with Building regulations, when ductwork passes through any element of construction which has a designated period of fire resistance, the integrity of that compartment should be maintained.

Our Rock Mineral Wool fire protection solutions are  designed to protect vertical and horizontal, rectangular and square steel ductwork associated with ventilation and/or air conditioning systems, in addition to ducted supply and extract systems (whether through ducts or plenums), mechanically assisted systems and those relying on
natural convection.



Why Mineral Wool?

  • Our Rock Mineral Wool solutions are non-combustible with a melting point in excess of 1000°C, providing up to 2 hours fire protection to steel ductwork.

  • Our solutions are applied in a single thickness, removing the need for multi-layer applications, and providing assurance of a uniform thickness and allowing for easy verification of correct installation on site.

Download our Solutions Guide      Download our Fire Protection PDF

For any U-value calculations for alternative construction build-ups, please contact our Technical Support Team on 01744 766 666.
For written U-value calculations, please email details of your full through construction build-up to technical.uk@knaufinsulation.com and we will respond accordingly to meet your requirements
We are a fully accredited member of the industry leading British Board of Agrément (BBA) U-value and Condensation Calculation Competency Scheme which promotes and assists accurate, objective and consistent calculations of U-values and condensation calculations within the UK construction industry. As part of our ongoing participation in the scheme, we are required to maintain written records for audit trail purposes.