The only trade we would like to remove are the overpriced electric aluminum roller shutters (9 pieces for almost €15,000). Since we cannot/may not remove these individually, we would have to remove the entire package (windows, roller shutters, exterior doors, and exterior window sills).
The reimbursement for this would be: €16,600 base price for windows and doors + €2,650 (foiled windows) + €480 (mullion profiles) + €2,020 (side entrance door) + €8,660 (installation of roller shutters) + €4,070 (electric roller shutter drives) + €2,580 (aluminum roller shutters) = total compensation of €37,060
Overall, from your thread history, I get the impression that you want to take the royal road to a Waterloo: building with a general contractor (GU), but upgrading his scope of service description from Jetta to Phaeton – already individually nearly half a catastrophe guaranteed! – and then also optionally replacing individual suppliers and tradespeople – that completely pulls the reinforced double bottom out from under the barrel. Only someone who wants to prove that anyone can be the smith of their own misfortune if they just consider themselves a clever buyer would do that. Furthermore, you apparently overlooked that it is said a thousand times here that "cheap" general contractors make a killing on extras.
Based on scale-accurate plans, we obtained comparison offers and received a very good offer:
Price for everything approx. €34,000 (with the following added value compared to the GU’s offer:
- 14/14 roller shutters instead of 9/14 roller shutters,
- with lift-and-slide door instead of normal terrace doors,
- with app control of the roller shutters instead of no app control.
[...] However, these would be Salamander windows (separate contract) instead of Rehau (GU).
14/14 instead of 9/14 roller shutters presumably means in full sentences that, out of 14 elements, now all are equipped with roller shutters instead of five of them not (?); and in , you already did yourself almost a disservice by changing the three-part mullion element to lift-and-slide (which should also be aluminum). I consider Salamander or Rehau more or less the same; if you want colored PVC, I have already said several times here that the best choice would be Gealan (because of the co-extrusion).
Now our problem: Our GU will not create a scope of services for the windows despite multiple requests and will also not provide us with the exact dimensions.
But there should be released working drawings or at least the design plans should be declared as such. The dimensions of the window and door openings must then be executed subject to standard-compliant tolerances. The GU must assure this to you, otherwise you can forget it.
Exactly. As is well known, I was a window manufacturer (and later a dealer), and except for listed buildings, I have never seen detailed drawings for windows—not even for administrative lawyers or senior teachers. As already says, windows are ordered according to measured dimensions (and only secondarily based on drawings with guaranteed tolerances). And just as the right person is saying right here: you can already recognize the mental clumsy motors by their "attitude" towards overlap measurements on the first three rows of bricks. So theoretically, you could early on indicate whether the window installer might have to reschedule or bring along a Hilti.
Moreover, I don’t understand your entire problem: exchanging electrified roller shutter drives for manual ones is a breeze. Wanting to remove the entire "roller shutter trade" for this is borderline between foolishness and administrative incompetence!
My advice is therefore: keep the scope of the offer here "original GU" and only consider whether the windows are better (from the GU!) to be taken from Gealan or "worst case" remain white. The few cables for retrofitting the electrification cannot possibly cost the world. The control (actuators
and sensors!) is done in the PLC (which the GU has nothing to do with).