Why is there an air passing from the window if the structure has 3 rows of seals?

The first line of the seals is so-called outer seal, second row is so-called middle seal, and the third row is so-called inner seal. The outer and the middle seals form a outside chamber of the window. Middle seal and inner seal form a inner chamber of the window. The outer and the inner seals are in some way broken with external water holes and the inner seals are broken with hinges. The only unbroken seal is the middle seal. It has to sit properly so it can provide sealing between the two chambers. If it does not touch the sealing surfaces of the wings properly, the window will not seal. It is easy to determine the partial surface by using ink to paint seals that must leave a trace on the wings. If there is no trace, then the rubber seal is defective or the built in fittings does not provide gaps designed for euro gap system, which is 21 mm.

Why does sweating and leaking of the condensed water occurs on the surface of the double thermo-insulated glass and aluminium profiles surfaces if the aluminium profiles have thermal break?

This happens in two cases: if the aluminum doors and windows are installed in the areas that are recently plastered and whitewashed, and overnight all the openings were closed, indoor water produced during the drying out of mortar and lime has nowhere to go and therefore condenses on surfaces. Make sure you keep the windows open day and night for the next ten days. If this happens during the heating season, increase the heating as well. If the heating is insufficient in the room and temperatures on the glass and aluminium profiles are less than circa 16°C, increase the heating. That's why the radiators are commonly placed right under the windows. Also, in such areas there is probably higher than normal evaporation because of the kitchen, bathroom or hospital room so we need to open windows every hour for 5 min so the air saturated with vapor can cool down.

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