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Key benefits

Variable Sd Value of 0.3 m to 5 m

As part of the Vario system – prevents mould and mildew growth by reducing the potential for moisture accumulation


For renovation projects, especially loft spaces and roofs, Vario together with mineral wool insulation dramatically improves the thermal performance of an older building


Vario allows timber dampened by rainfall during construction to dry out faster

Vario automatically adapts to long heating and short drying periods, unlike conventional membranes that behave the same way in all conditions

Vario protects the inside of the building against toxic gases – particularly important when converting the attics of older buildings into living space

Variants Details



Width (mm)Length (mm)Packaging

ISOVER Vario KM Duplex Membrane

  • Application

    Ceiling, Ext Wall – Cladding/Rainscreen, Ext Wall – Timber/Steel Frame, Floor – Suspended, Roof – Slope, Roof-Flat


    Moisture Variable


    Membrane Roll

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