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2. Is it correct that new windows can be “too tight”?
No.
For optimum insulation the façade and windows must form a relatively tight unit. The important air exchange takes place through daily percussive ventilation and controlled living space ventilation. And there will be no more about leaky windows, installation joints and chimneys.
At Josko all systems belong to the highest tightness classes. The Platinum slide and lift door achieves a top value of 900 pascals in the official test for air permeability and watertightness, which far exceeds the normal value of 300 pascals in the industry.
For optimum insulation the façade and windows must form a relatively tight unit. The important air exchange takes place through daily percussive ventilation and controlled living space ventilation. And there will be no more about leaky windows, installation joints and chimneys.
At Josko all systems belong to the highest tightness classes. The Platinum slide and lift door achieves a top value of 900 pascals in the official test for air permeability and watertightness, which far exceeds the normal value of 300 pascals in the industry.
