Kingspan Insulation has unveiled the latest additions to its popular K-Roc range of Euroclass A1-rated insulation:
· K-Roc Soffit Slab
· K-Roc Flat Roof Slab 70/039
· K-Roc External Wall Slab and
· K-Roc Partial Fill Cavity Wall Slab.
The rock mineral fibre insulation products provide simple, practical solutions for applications where enhanced fire performance may be required.
K-Roc Soffit Slab is suitable for use on a wide range of structural ceilings including basements and underground car parks. The A1 rated mineral fibre slab is available in thicknesses from 100 to 200 mm to suit project requirements and has a thermal conductivity of 0.036 W/mK.
For external wall applications on masonry constructions, K-Roc External Wall Slab can provide an effective solution. Suitable for use behind traditional and lightweight polymer modified renders, the insulation achieves a thermal conductivity of 0.037 W/mK and can be installed as part of both new builds and refurbishment projects.
K-Roc Partial Fill Cavity Wall Slab joins Kingspan’s existing range of Euroclass A1 rated external wall solutions, alongside K-Roc Framing Slab and K-Roc Rainscreen Slab. The insulation achieves a thermal conductivity of 0.035 W/mK and is designed to be installed with a clear cavity (in line with the regulatory requirements for the application), supporting its use in applications where walls may be exposed to significant driving rain.
K-Roc Flat Roof Slab 70/039 can be fitted on new or existing roofs with concrete, timber or metal decks. The product is fully compatible with most mechanically fixed single-ply waterproofing systems and achieves a thermal conductivity of 0.039 W/mK.
All four products have been assessed under Assessment and Verification of Constancy of Performance (AVCP) System 1 for Reaction to Fire.
The new K-Roc products form part of Kingspan’s full spectrum range of insulation solutions, helping project teams meet their targets on any developments. The products are backed with dedicated technical support.


