Windows in house construction: What are all the available options?

Strange is that aluminum is either not considered at all (plastic, also for front doors and - ! - lift-and-slide doors) or immediately in connection with wood (so the price jump is like from Dacia to Maybach).

A 30-50% surcharge is probably an obvious reason for that, don't you think?

A 30-50% surcharge is obviously a clear reason, don't you think?

If aluminum was meant completely: if it were available for only a 50% surcharge, I wouldn't have chosen wood/aluminum. Even the surcharge for oak instead of pine would have been higher than wood/aluminum instead of plastic...

With us, you see a lot of anthracite, mostly with [Raffstore] and then also as a loophole. Also huge window fronts, sometimes over almost the entire south facade.

We don't like it, but it's like with all trends

A 30-50% surcharge is probably an obvious reason, don't you think?

Even the surcharge for oak instead of pine would have been higher than wood/aluminum instead of plastic...

I myself ran an aluminum window manufacturer a few years ago. We were about 20% above plastic (not compared with discounters, of course). In price comparison engines it may look different because there are no discounters for aluminum; this might create the impression that aluminum is much more expensive.

When I talk about wood-aluminum, I mean wood/aluminum from manufacturers who can do it (more dare to try). Apparently, recently - which must have passed me by - there are wood-aluminum windows on the market that simply use wood qualities under the motto "it is protected with aluminum," which you better wouldn't use "bare." That, of course, is significantly cheaper.

I guess I need to update my market overview regarding junk products.

Plastic to wood aluminum is about 50 to 75% surcharge. Plastic to pure aluminum windows about 100% to 150%. Those are my experiences.

My (felt, not counted) majority impression here in the forum is that many builders are not even aware that they have to specify when they want the "without mullion" for two-leaf windows – in the stylistically "worst" case with the consequence that only the "second escape route" is executed with a German mullion, and adjacent windows of the same size then look a bit different.

Can you please explain this briefly.
We mainly get windows sized 1.45m x 1.7m (H x W) (in the upper floor maybe only 1.35m x 1.7m). These must be constructed as two-leaf windows. I thought I now have the choice between a mullion or a German mullion. Are there more options?