Floor Solutions


Economic benefit...beneath the surface 

Energy efficiency is becoming more of a focus, which means thermal performance of ground floors is key in sustainable design criteria and specifications. Thermal Rockfloor® delivers energy efficiency and a comfortable indoor climate for building occupants.


The ROCKWOOL ROCKFLOOR® range is a tissue faced, high compressive insulation slab made from mineral stone wool insulation. Thermal ROCKFLOOR® has been designed with Part L (Thermal) regulations in mind, the dual density insulation has excellent thermal properties.

The unique dual density structure of Thermal ROCKFLOOR® means it can be laid over slightly uneven subfloors. The lower density absorbs imperfections and the high-density layer provides a strong point load resistance.

Thermal ROCKFLOOR® is an ideal high-performance mineral wool insulation for ground floors to provide occupants with optimum thermal comfort. The thermal properties of the insulation make it an economical solution for conserving heat in dwellings.



CE Marked

  • ROCKFLOOR® boards are easy to handle and fit, keeping the time spent fitting the layer to a minimum.
  • Sub-floor imperfections are absorbed by the dual density layers, creating a neat and level finish.
  • Thermal ROCKFLOOR® can be placed over or under the over site slab dependant on the project.

Product Properties

Compliance BS EN 13162, ISO 14001
Reaction to fire Fire Properties Euroclass A1
Thermal conductivity 0.038 W/mK
Water repellent Water Repellent

Product range and ancillaries

Item number External item number Country Thickness (mm) Width (mm) Length (mm) Packs Per Pallet m² Per Pallet
125051 125051 UK 50 600 1000 48 28.8
125052 125052 UK 60 600 1000 42 25.2
125054 125054 UK 80 600 1000 30 18
125056 125056 UK 100 600 1000 24 14.4

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