The thermal envelope of the house

Hello everyone,

Today we received the building description of the house for our cost estimate.
The house we are building is not supposed to be a KFW house, only according to the Energy Saving Ordinance standard!
Now I stumbled over the sentence below about the thermal envelope and wanted to ask what exactly this means?
How exactly is this envelope composed? Do we have to build such an envelope necessarily? Is there another "Energy Saving Ordinance envelope"?

Thanks in advance!

Excerpt from the text:

D: Shell construction work

[*]General

Wall and ceiling thicknesses, choice of materials, steel reinforcements, concrete qualities and mortar groups are carried out according to the thermal insulation calculation and insulation, the static requirements, and the currently valid technical regulations.

The thermal envelope is constructed as an energy-efficient house Kfw 70 (as of 2014).

d) Concrete and reinforced concrete work

The foundation is made with an in-situ concrete slab, made of WU concrete on gravel filter. The basement exterior walls are built as single-layer Poroton walls, d= 36.5 cm T9. Floor slabs as filigree solid slabs with topping concrete, according to the static, sound and thermal technical requirements. Under the slab a stainless steel foundation earth electrode with corresponding connection options is installed.

The slab is clad with perimeter insulation WLG 035, d= 10 cm.

e) Masonry work

The exterior walls are constructed as single-layer Poroton walls, 36.5 cm thick, according to energy calculation. Interior walls in hollow brick. Over the window openings, exterior roller shutters are installed in the exterior wall. Installation chimney according to heating capacity and heating technology with chimney head cladding above the roof (sheet metal or fiber cap). Also, a separate chimney for later wood stove installation on the ground floor.

f) Insulation work

The basement exterior walls are plastered with cement mortar and a thick coating with drainage panels and filter fleece is applied. Drainage pipes with corresponding flushing / inspection shafts.

The case is your home !!!

That is clear to me!

My questions also referred to something completely different!

Then you should ask what you actually want to know

There are countless ways to build according to a certain energy saving regulation standard - whether your construction company does it is another question... (monolithic, ETICS, clinker, timber frame construction, etc.).

H Now I stumbled upon the sentence below regarding the thermal envelope and wanted to ask here what exactly this means?

That your house is built monolithically - without ETICS - and somewhat better than the current Energy Saving Ordinance. Oh yes - and equipped with a foundation earth electrode under the BP, which is actually only required for special waterproofing - commonly from a white tank upwards. The only thing that confuses me is that the basement is supposed to be masonry. All in all not one of the worst constructions. If the rest of the equipment like contracts also fits, you have obviously not made a bad choice. Rhenish greetings

Morning!

My questions were probably not clearly defined, sorry!

I of course meant the internal structure of the shell. I wanted to ask what the difference is between the KFW-70 shell and the Energy Saving Ordinance.

I don’t want to build according to KfW standard. Can I suggest an Energy Saving Ordinance shell to the construction manager and thus save money, or is the small difference not really worth it? It’s of course nice to save money, but if it’s only a little, I don’t want to start off on the wrong foot!

Why is the masonry basement unusual? Should I inquire about a different method?

What is the purpose of the stainless steel foundation earth electrode and do I really need it?