Cost of fixed glazing with a reasonable U-value <0.7

Hello,

how high do you estimate the costs for approx. 90m^2 fixed glazing with a reasonable U-value (<=0.7)?

The windows should be about 3m high, whether the facade is then constructed from 3x2m or 3x3m etc. is initially irrelevant.

I would be interested in an approximate guideline price, and which providers with a good P/L ratio are the ones to ask for an offer.

Thank you very much
Daniel

The windows should be about 3m high, whether the facade is then built from 3x2m or 3x3m etc. is initially irrelevant.

I would be interested in an approximate guideline price,

Even for an approximate guideline price, this is by no means irrelevant. Three meters high is expensive; many providers are set up for a maximum height of 2.40m. Also, 2m or 3m wide is not irrelevant – firstly, this already makes a 1:1.5 difference in the number of elements (i.e., frames), secondly, on the other hand, the narrower variant (with, considered on its own, smaller = lighter glass) may possibly manage with a weaker frame profile.

In general, with fixed glazing you only save the swing sash including all fittings – nothing more.

Are 90 sqm the total of all fixed glazing, or for example a conservatory?

The more contiguous this area is, the more you also have to consider wind loads.

approx. 90m^2 fixed glazing

What do you want to glaze with that? Or should the 90 actually be 9?

almost the entire south side (almost) floor to ceiling. >3m room height -> approx. 30 linear meters, over 3 floors. (current floor plan is rather long and narrow)

Even for an approximate price estimate, this is by no means irrelevant. Three meters high is expensive; many providers are set up for a maximum height of 2.40 m.

if it were _significantly_ cheaper at 2.4m, I could probably live with 2.4m as well. But if possible, 3m would of course be very nice.

Also, 2m or 3m wide is not irrelevant – first, because that already means a ratio of 1:1.5 in the number of elements (i.e., frames), second, because the narrower version (with smaller = lighter glass considered on its own) may possibly get by with a weaker frame profile.

also here: the cheaper solution. What this is I absolutely cannot assess, hence this thread here.

Are 90 sqm the sum of all fixed glazing, or, for example, a conservatory?

The more contiguous this area is, the more you also have to consider wind loads.

relatively contiguous. The wind load per window element should remain the same, if you mean the wind load on the remaining substructure (rest of the wall etc.), that is clarified.

almost the entire south side (almost) room-high. >3m room height -> approx. 30 linear meters, spread over 3 floors. (current floor plan is rather long and narrow)

So, you mean three floors each 3m high and 10m wide – but in between / alongside there are still wall piers that carry the roof above?

You ask so many fragmented individual questions about your house, but none of your considerations can be viewed in context. Especially when it is impossible to guess how many different designs your individual questions belong to.

Just discuss a coherent design here – no matter how many details are still missing. I have the feeling you are trying to piece together a house as a shopping list of components from roof prices and window prices, etc. This soufflé will probably collapse in the oven.

also here: the cheaper solution. What this is I absolutely cannot assess, hence this thread.

... and another half dozen more, until you realize that asking for the recipe for hash cookies spoonful by spoonful will not lead to the goal.

if it were _significantly_ cheaper at 2.4m, I could probably live with 2.4m. But if possible, of course, 3m would be very nice.

And what do you want to do with the 60 cm in between? – with such a large window area – and on the south side too! – you will have to install shading there, otherwise you will have a sauna.

relatively coherent. The wind load per window element should remain the same, in case you mean the wind load on the remaining substructure (rest of the wall etc.), that is clarified.

I mean that wind hits a wall. If there are too few diffusers (trees etc.) in front of it, it presses very strongly against the panes. To illustrate somewhat exaggeratedly, it blows them up like sails. The frames at the edge have to hold that. The larger the area (or the longer the edges), the more "deflection" the frame has to withstand. Then the profiles have to be stiffer, as with heavier glass.

I can quickly look up the price for a toilet window, calculated as if it hypothetically had ninety square meters. But it would be a gigantic error if you transferred this number into your budget and thought, "great, this makes my calculation work, this way I can build my house."