However, this statement from the article is misleading:
> the tilt configuration locks into place against potential intrusions... In other words: you can leave the window open when you are away without worrying too much about security or the weather.
It is trivially easy to open, from the outside, a window left in the tilted open position. All that you need to do is to pull the window closed and then move the handle from vertical to roughly horizontal (the 'full open' position).
How do you move a handle on the inside of the window when you are on the outside? It is simple, you use a short length of PVC pipe (which fits over the handle) and some string. The details I leave to your imagination.
take-home message: tilted open is nice, but not at all secure against a semi-motivated intruder.
Germany goes from about 48 degrees north latitude to over 54 degrees north latitude.
I never saw any mosquitoes or many bugs at all in Belgium, and my in-laws never reported any bugs when they were stationed in Germany.
When we had screens custom made to fit in our windows, the Belgian handyman who made them really didn’t understand what we wanted or why. He charged us a bunch of money and then I had to go down to the local Brico hardware store to buy the stuff I needed to fix them up to make them work the way we wanted. When he saw what I did, the next round of screens for other places in the house were much better made, and I didn’t have to fix them.
However, here in Texas, well boy howdy, you sure are going to want those bug screens on your windows. And there’s no practical way to make screens to fit into your silly casement Windows, so they better be properly made and affixed to the outside.
We didn’t have rolladen (rolling shades) in our house in Belgium. When we visited my in-laws in Germany, boy were we jealous. I’ve wanted something like proper German rolladen ever since. Oh, and their windows, too.
There are even fancy versions with screens that can be rolled up if needed.
Edit: Here's an example [1]
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This should be read as "a higher price tag in the US". In mainland Europe these are the standard windows, and are made by many manufacturers all over the continent, they are not a luxury item.
I'm building a house and a 1.2m (62") X 0.6m (24") window with this mechanism, the best frame available (from this manufacturer) and triple glazing was €180. I doubt you could even find a casement window at a US home improvement store for that.
https://www.koemmerling.com/en/products/window-residential-d...
Another challenge for this type of window: it's challenging to hook up a portable AC unit in an aesthetically. This is a factor if you don't have central air and need to retrofit cooling.