Construction costs are currently skyrocketing

We took 36.5 aerated concrete...

Yes, of course, but pp2 or pp4. They differ in insulation value.

Yes, of course, but pp2 or pp4. They differ in insulation value.

PPW 2-0.35 (0.08) according to the offer

Have 36.5 Poroton unfilled and sufficient for kfw 55.

Yes, of course, but pp2 or pp4. They differ in insulation value.

we have 36 cm pp2 aerated concrete without insulation. The structural engineer said that pp4 has too low a bulk density and is therefore "too soft" - meaning less load-bearing. However, something was added to the floor slab and roof insulation.

The structural engineer said that the pp4 has too low a bulk density and is therefore "too soft" – meaning less load-bearing. For that, something was added to the floor slab and roof insulation.

Not quite. PP4 is harder and more load-bearing. PP2 has a higher air content, making it lighter and not quite as load-bearing.

Not quite. PP4 is harder and more durable. PP2 has more air content, is therefore lighter and not quite as durable.

That's actually correct. Then I remembered it wrong and must have confused something. It also has a worse insulation value.