People don't even know what double glazing is when I talk to them.
Windows in my apartment are like paper. We also get the brunt of storms that come face on to my balcony window. Everyone else has a roof, but being on the top floor our balcony is open. When it's a bad storm and it comes directly face on, we get flooding through the balcony and kitchen window.
In the second tower, the portero lives on the 10th floor and he has it the same. We have tried all the home remedies, like inslulating the sides of the windows etc. It helps but not enough. Another thing is the extractor for the our thermotank is also face on to most storms. On windy days coming directly at the building the wind will blow all the gas back into the kitchen when running hot water. Beautiful.
When we moved in, we were the first in the apartment so everything looked spanky new. However, it was a facade and it's just clear that everything was either done on the cheap or in a rush. More likely both. It is not like this in buildings on lower floors. I suspect the building project was running out of time and money when the building was finished around 6 years ago and they rushed to complete it with what little money they had left.