Roller shutters - plastic or aluminum?

In fact, at the end of the day, it is more likely to be a question of price. You simply have to weigh whether the extra cost is worth it to you.

Normally, the guide rails are the same for both versions, i.e. plastic rails clipped on. If you want to get to the window glass, simply pull hard on the guide rail. However, it is not very quiet.

Some manufacturers offer an anti-burglary package. These can include, for example, reinforced aluminum roller shutter profiles used for wider windows, reinforced bottom slats, concealed screwed guide rails, anti-lift protection, and a proximity sensor that briefly moves the roller shutter when approached.

I would take aluminum; plastic looks really tacky by comparison... at least in silver. Just take a look around a new housing development.

You should reconsider the color of the roller shutters. Dark roller shutters in direct sunlight heat up quite a bit.

The additional cost of 1,100.00 euros for 10 large and 3 small windows is okay. I really care about the visualization of these. I just think that with a white house, with anthracite windows and sills, a light gray roller shutter does not fit. And if it is supposed to be anthracite, then only aluminum works. (at least with Allkauf Haus) and contrary to my assumption that aluminum rattles, etc. (which we have disproved here), aluminum is actually the better solution.

Regarding the sunlight:
The south side of the house is the entrance side. So only guest bathroom and office. Therefore, only small windows, and the sun can happily warm them up. (That way the guests don't stay too long )