Celotex Isover

Insulation for Steel Stud Frame Walls

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In a concrete framed or heavy steel framed building the areas between the structural frame will be filled with light steel framing (LSF, or SFS) and this studwork zone will more than likely need to be insulated to comply with Building Regulation requirements.

With many of these buildings extending far above ground level it is important to select the correct insulation product for use within the stud zone, this usually means a non-combustible insulation product (i.e. Euroclass A1 Reaction to Fire classification).

A glass mineral wool roll or slab provides both a thermal and an acoustic insulation solution for this sensitive area of a building while also satisfying the non-combustibility criteria.

Key Considerations

When using Celotex or ISOVER products, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions. In addition to the product datasheet, please refer to the following product documents:

Celotex products should not be used in the external walls of buildings over 18 metres in height (England and Wales) or 11 metres in height (Scotland). Recent changes to Building Regulations mean that only non-combustible insulation or insulation of limited combustibility can be used in buildings of that height.

The building detail is for illustrative purposes only. It does not constitute advice and should not be relied upon.


Insulation products
Product Name Thickness Range Sizes Lambda
ISOVER Steel Frame Infill Batt 50-100mm Width 600mm, Length 1200mm 0.036 W/m.K
ISOVER Polterm Max Plus 50-200mm Width 600mm, Length 1200mm 0.035 W/m.K