Airtightness

Vario System is an intelligent membrane, designed to adapt to the climate and protect your building, inside and out. It’s also designed with an uncompromising commitment to superior airtightness. Vario System will improve your BER (building energy rating), save money, increase comfort and help to combat climate change.

 

Vario System meets and exceeds industry standards, while making a substantial contribution to your BER and environmental footprint. Developed in Germany and available exclusively from ISOVER, Vario System membrane is as sophisticated as human skin – altering its structure according to relative humidity. Vario System vapour control membrane offers superior performance,facilitating the drying of the building structure whilst delivering superior levels of airtightness within the building envelope.

 

Just how good is it? Vario System’s performance is truly outstanding, it has an excellent variable sd-value: it diffuses 25 times more moisture in summer than the structure absorbs during winter.

 

Vario System’s most unique quality is its ability to change its water vapour performance. The Vario System membrane adapts and reacts naturally, changing its permeability according to humidity conditions, allowing closed building systems to increase their drying potential. This means Vario System is truly multifunctional: acting as a barrier in winter and a breathable membrane in summer.