Construction costs are currently skyrocketing

How many square meters will that be? Sounds like three times our house or do I have a knot in my head right now?

1200 cubic meters of enclosed space roughly calculated with 3m / floor 2 floors 1.5m roof no basement 1200/(3+2+1.5)--> approx. 185 sqm

Hello,

1 ton of concrete produces 600 kg of CO2 emissions for cement production...

30 cm floor slab, 100 m2 external dimensions already amount to 30 tons of CO2. For the basement walls in waterproof concrete roughly another same amount. Plus each ceiling another 20 to 30 tons. Even sand-lime bricks for the walls largely consist of cement... adds up to about 100 tons of CO2, for which hefty offset fees will probably soon be due.

Although it’s not really about construction costs, it’s a completely accurate calculation that many people are totally unaware of. I also once calculated it for our house and got the result that just the concrete alone produced roughly as much CO2 as our “bad gas heating” does in about 30-40 years...

And that was only the concrete; bricks (which have to be fired) and everything else weren’t even included yet.

In other words, the choice of heating system is completely irrelevant from an environmental perspective... but nobody wants to hear that.

If you really want to do something for the environment, you better skip building a house and live in an old hut... but no one wants to hear that either.

Just my 50 cents,

Best regards,

Andreas

I once calculated it for our house as well and then got the result that just the concrete produced about as much CO2 as our "evil gas heating" in roughly 30-40 years...

You can see the gas heating burning gas, the rest is just there :-) We new homeowners all feel so eco-friendly, but we are actually the biggest environmental pigs ever ;-)

1200 cubic meters enclosed space roughly calculated with 3m / floor 2 floors 1.5m roof no basement 1200/(3+2+1.5)--> approx. 185 sqm

But that's calculated strangely! Why +2, because 2 floors? Do you want to calculate usable area or floor area of the foundation slab? In the first case, the 2 doesn't even appear, in the latter, you have to divide by it. Basically, that doesn't say much at all. Structurally, it can be a very complex building, which then makes it expensive.

Uh that is my solid wood house but ecological. ;) Ecological is renovating, building small, using building gaps but town centers are not attractive. Politics must help there.

I once calculated it for our house as well and then got the result that just the concrete produced about as much CO2 as our "evil gas heating" in about 30-40 years...

That is a good thought to consider

In other words, the choice of heating system is completely irrelevant from an environmental point of view... but nobody wants to hear that.

That is a somewhat more intelligent conclusion – the choice of heating system is relevant in itself under consideration of the CO2 footprint. The heating system only plays a lesser role in the overall consideration of the CO2 footprint of the project "house" than many think. If I have a powerful motor yacht in my fleet, that has nothing to do with the relevance of the consumption of my car.