Celotex Isover

Insulation for Rainscreen Cladding

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Ventilated façade walls (also known as rainscreen cladding walls) typically provide protection from the elements to tall steel-framed or concrete-framed buildings. Recent changes to Building Regulations mean that only non-combustible insulation or insulation of limited combustibility can be used in the external walls of relevant buildings over 18 metres in height (England & Wales) or 11 metres in height (Scotland).

The insulation of choice in these types of walls is a stone mineral wool slab installed against the sheathing board prior to the installation of the rainscreen cladding system.

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


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