Outer wall, interior insulation, and then slate in the new building

Hello €uro,

U-values of future-proof wall constructions should already be <= 0.16 W/m²K, otherwise one has not recognized the signs of the times

The "signs of the times" are determined by diploma-holding idiots at the green table, who, in my opinion, delight in ever lower U-values without giving a thought to affordable and healthy solutions. If you want to blindly advocate for these people, be my guest.

And one more thing: if you consider it right to live in a plastic casing in the future, which also – in case of emergency – has to be disposed of expensively, that is your personal decision. However, you should refrain from deliberately discrediting people who are strange to you – this is neither good style nor a sign of a mature character.

Kind regards

U-values of future-proof wall constructions should already be <= 0.16 W/m²K, otherwise one has not recognized the signs of the times

best regards

Hmm that’s naturally nice, but then the rest must also fit and not be undone again by windows with 0.9 - 1.1 W/m²K, and if you build the most future-proof of all, it is no longer affordable for 80%!
And as already mentioned, such a thick plastic shell is also not acceptable to everyone.
In my opinion, it’s better to reasonably build single-layer halfway now and then, if necessary, you can still insulate all around in 15-20 years if needed.
I think it makes sense and is still justifiable to achieve under 0.25 W/m²K for a wall construction, but even this is not met by many new buildings and they still comply with the Energy Saving Ordinance 2009.

Hello,
I can only agree with the statements made by €uro. A house built today should not only meet the required maximum values but preferably fall below them. Keyword: SUSTAINABLE BUILDING.

A lot of energy is lost through the building component exterior wall (it is also the largest heat-encompassing surface). And not every well-insulated exterior wall necessarily has to be made of "plastic".

@blurboy: you can't really be serious about planning a new building in such a way that it has to be retrofitted with insulation in 15 years.

By the way: a U-value <= 0.16 W/m²K is not magic

Regards

Hello construction expert,

...The "signs of the times" are determined by certified idxxt professionals at the green table, who in my humble opinion take pleasure in ever lower U-values, without giving a thought to affordable and healthy solutions. If you want to blindly advocate for these people, please.

Mistake, upcoming costs for energy carriers will clearly show it! It truly takes little expertise to recognize this.

And one more thing: if you think it is right to live in a plastic shell in the future, ...

Don’t worry, I don’t live in a "plastic shell" and that without any controlled residential ventilation!
Whoever lives in a "plastic shell" simply got a wrong advisor/planner!

You should refrain from deliberately discrediting people who are foreign to you – this is neither good style nor a sign of a mature character.

Nobody needs to be discredited here, numbers and facts are always decisive. Whoever consciously denies this probably has something to hide, wants to push something on a client, or lacks holistic expertise.

E.Curb is completely right: U-values <= 0.16 of the heated living area by no means mean "plastic shell"!

I recommend understanding through an energy balance over the typical useful life of 20...25 years in connection with an economic comparison, then it will presumably become clearer.
There is currently hardly a comparable and safe investment than to invest existing funds, inflation-protected and future-oriented, in reducing future heating energy costs.

Best regards.

@blurboy: you can't seriously be planning a new building in such a way that it will have to be retrofitted with insulation in 15 years.

Regards

I said at least it would be possible then, what am I supposed to do with a house that already has 20cm of insulation slapped on? Besides, who knows what will be in 15-20 years? The houses in our region that were built in the early 90s are now, from an energy perspective, all rubbish!

I said that at least it would be possible then, what am I supposed to do with a house that already has 20cm of insulation slapped on it?

Definitely not insulate afterward, because it's not necessary!

Besides, do I know what will happen in 15-20 years?

Yes, you do. You have to insulate afterward and for a lot of money. Retrofitting insulation on an exterior wall is many times more expensive. Insulating is not just sticking styrofoam on the wall. It also involves a bit of planning.