House Pictures Chat Corner - Show off your house pictures!

2019-08-02 09:59:43

Ok, it still seems unusual to me. Most 36.5 cm brick houses settle somewhere around 0.3x. For example, all my U-values are slightly better than yours (wall 0.2, roof 0.13, floor 0.2, etc...), yet my Ht is somewhere around 0.30.

Maybe your energy consultant forgot to enter something or miscalculated. Joking aside, if your highest U-value is already lower than the reference value, how can you be so far above it? That simply doesn't work mathematically. The average of all U-values (of all surfaces) is your Ht value. Do you have any high outliers with a large area somewhere? I would actually be interested now!

2019-08-02 11:07:04

Yes, the average, area-related, with me you can roughly estimate it as follows: 0.2 walls plus WBZ are 0.25, windows and doors pull it further down to about 0.4, the good roof (with a large area) then raises it again to just over 0.3 and the floor with 0.2 then pushes it slightly towards 0.3. Windows weigh heavily, well we have very large windows, but even if a normal house is at 20%, the Ht for wall and window with your values would be at 0.35, with your WB in the single verification then 0.37. With your values, roof and floor would then have to be twice as large in area as the wall area. maybe that is the case for you, it is just not the norm, hence my skepticism.

2019-08-02 11:19:52

Yes, the average, area-related, with me you can roughly estimate it as follows:
0.2 walls plus WBZ are 0.25, windows and doors pull it further down to about 0.4, the good roof (with a large area) then raises it again to just over 0.3 and the floor with 0.2 then pushes it a bit towards 0.3.
Windows have a huge impact, well we have very large windows, but even if a normal house is at 20%, the Ht for wall and window with your values would be at 0.35, with your WB in the individual proof then 0.37. The roof and floor would then have to be twice as large as the wall area in terms of area with your values. maybe that's the case with you, it's just not the rule, hence my skepticism.

For me, the upper floor ceiling compensates for the disadvantages of the basement exterior walls. The roof doesn't matter because it is designed as a cold roof on the outside.

Everything else is significantly below and pushes the Ht value just to KfW55 level.

No more info is necessary.

For a change, also a house building picture. Our terrace railing is installed. The fall protection as a double rod mesh fence as well.

2019-08-02 11:24:57

If you type that through, you get 0.3 ... (with the low WBZ, otherwise 0.33 which would be normal). So miscalculated after all(?)
Well, with reduction against the ground it becomes less, a basement really makes a big difference in such a calculation. I would still get 0.27.

2019-08-03 08:57:50

The average of all U-values (of all surfaces) is your Ht value.

If I remember correctly, you multiply U-value * area and add the results. Then divide this value by the sum of all exterior surfaces and apply the thermal bridge surcharge to this result.

If you calculate it through, you get 0.3

I also get: HT = 0.304

Omitting any coefficients that improve individual values?

2019-08-03 10:10:35

I have to recalculate again.

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