Too many windows for the Energy Saving Ordinance 2016

  • Erstellt am 2018-06-28 22:06:47

dertill

2018-06-29 11:56:52
  • #1


is right! The calculation for compliance with the Energy Saving Ordinance is done according to the reference building method. In this process, your planned house is compared with a building that is identical in volume and orientation, with the same number of windows (of the same size and orientation). The reference building has specific U-values defined in the Energy Saving Ordinance and reference building technology. To comply with the Energy Saving Ordinance, your house must have a total primary energy demand that is equal to or lower than that of the reference building.

If you omit or reduce the size of windows, it has exactly ZERO impact on fulfilling the Energy Saving Ordinance. You can even glaze the entire north side. That will increase your energy demand, but so will the reference building’s, and in the end, it makes no difference.

If the Energy Saving Ordinance is not met in this way, the following remain:

- other windows with better U-values; whether plastic, wood, or aluminum makes no difference, there are all types of construction with Uw-values between 1.2 and 0.6. If you don’t yet have triple glazing with warm edge spacers here, then improve that. Thicker profiles as standard (about 75mm) are usually only needed for KFW 55.

- more insulation / thicker insulation
If the problem is with the wall but the windows exceed the requirements of the Energy Saving Ordinance, even more windows can help!

- building technology: gas condensing boiler? solar? controlled residential ventilation? What is the status here?

- fire the architects
 

Alex85

2018-06-29 12:10:59
  • #2


Or outsource the discipline of thermal insulation verification to someone who does this professionally.
 

11ant

2018-06-29 12:15:57
  • #3
Above all: blah blah. The frame material makes the least difference, and wooden windows are quite expensive if they are any good. Apart from the exhibitionist window at the bathtub, I actually find all the formats quite fitting.
 

Curly

2018-07-01 09:53:59
  • #4
It certainly is not due to the size or amount of your windows. We have over 30 sqm of window area in the living-dining room alone and had no problems. There are just as many plastic windows with very good insulating properties as there are wooden windows. Wooden windows would be too maintenance-intensive for me.

Best regards
Sabine
 

Ilalei

2018-07-14 12:30:03
  • #5
Thanks to everyone for your comments! Now I have to think about what to do. The most sensible thing would probably be to change architects...
 

ypg

2018-07-14 12:57:53
  • #6


Yes. The interior toilet without a window does not have to be. The floor plan is interesting, no question. But the hallway swallows a lot of space, the broom closet is useless with the large utility room, and the kitchen open to the front door could be a bit drafty. Also, for the later expansion of the attic, a comfortable staircase does not fit well. I would already install a staircase in the hallway now, to then possibly comfortably reach a work or sports area or storage space. That doesn’t cost the world. I might omit a window, but keep floor-to-ceiling ones :)
 

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