Buying guide for windows in new construction

  • Erstellt am 2020-01-07 16:00:58

Ben-man

2020-01-07 16:00:58
  • #1
Hello everyone, next week our windows are going to be planned and I would like to inform myself in advance about what we should choose. A window manufacturer we spoke to a few months ago recommended ALUPLAST IDEAL8000 PVC windows. The specifications are:

- 6-chamber system
- Installation depth: 85 mm
- Steel reinforcement closed in the frame
- Misalignment protection (RU windows)
- Fittings equipped with two anti-burglary points per window sash
- System equipped with 3 seals
- Glazing with glass packages up to 51 mm wide
- Standard pane is 4th/18Ar/4/18Ar/4th [Ug=0.5]
- Application of concealed fittings possible
- Recommended for building passive houses

We are planning a 170 sqm single-family house, built with T10 facing bricks. No ventilation system and no additional insulation. The bricks comply with the Energy Saving Ordinance but not with KFW criteria. A wood stove is to be installed in the living room. I have considered the following three points:

- Sound insulation
Our house will be built on a moderately busy street. A few hundred meters away there is a school, which means that a few buses pass the north side of the house in the mornings and at noon. Otherwise, the area is relatively quiet. Aluplast specifies the IDEAL8000 window with a sound insulation of 48db. Does that mean that if I assume a street noise of 100db, I have to subtract 48db and the remaining 52db will be audible inside the house? Of course, that's only theoretical but such an approximate idea would probably help me. I would like it to be quite quiet inside the house, so good sound insulation is important to me. There are no major noise sources on the other sides of the house.

- Thermal insulation
Since our house will not be a KFW55 or anything similar, we have no special requirements. IDEAL8000 would be triple-glazed and "suitable for a passive house" (sounds like marketing to me). We are getting five large patio windows on the south side, which will be by far the warmest side. There is an additional option for the windows called "warm edge". As far as I understand, the window panes are additionally insulated from the frame on the inside of the window. Is it possible that the window insulates "too well" and that condensation or similar unwanted effects could occur as a result?

- Security
We will live in a rural area where there are virtually no break-ins. Nevertheless, I would like a little more than the usual protection. After all, you build only once and the windows are supposed to stay in longer. Therefore, I would choose the additional option of covered fittings. Does that make sense or are these fittings easily overcome by burglars? I realize that a burglar will get into the house if he really wants to, but I would like to delay him as long as possible.

Thanks in advance for your opinions
 

boxandroof

2020-01-07 16:33:35
  • #2
Why the variant for passive houses or did you make a mistake there?

For a window with argon filling and 3 seals, I would find it nonsensical to do without the relatively inexpensive warm edge. Rather, for cost reasons, I would consider whether it is possible to go for Ug 0.6 with a warm edge. The insulation value would be the same.
 

Ben-man

2020-01-07 16:41:16
  • #3
Thank you for the answer. No, I did not make a mistake. We can get this type of window comparatively very cheaply, which is why I asked whether you can install "over-insulated" windows and whether that even brings any added value.
 

boxandroof

2020-01-07 16:50:00
  • #4
You cannot install windows that are too good in new buildings. Warm edge is a fairly inexpensive measure; whether it is worth it depends on the price and heating costs. The "risk" of condensation on the windows decreases with warm edge.
 

Joedreck

2020-01-07 16:57:24
  • #5
You contradict yourself on all points.

Soundproofing is important. There are windows with special sound-insulating glass. But you build with "light" bricks.
Therefore, you should change the windows and go for sand-lime brick with [WDVS] or a clinker facade.

The windows are also rather not burglar-resistant. There are categories for this. Google accordingly and order accordingly.

You don't need to worry about condensation. Rather about shading in summer.
 

11ant

2020-01-07 17:04:46
  • #6
Is it still about this house? https://www.hausbau-forum.de/threads/langes-schmales-Grundstück-170-190-qm.30954/page-3#post-332187 The number of chambers is a superficial argument. I had already looked at the profile once and found no fault with it. With the MD variant you are doing well.
 

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