Foundation waterproofing missing - actions?

Otherwise, you have to distinguish between the masonry sealing (in your case the [not visible] bitumen) and the moisture protection of the base (plaster) (in your case not present, no idea if it is necessary with this plaster).

I have a question of understanding: If I want to protect a prefabricated house in timber frame construction against rising moisture and at the same time raise the terrain level almost up to the height of the top of the floor slab, how should I protect the building against rising moisture?

Currently, a Styrodur layer is screwed on the side around the floor slab. All prefabricated house manufacturers make it very simple by requiring a terrain modeling with a proper distance between the ground and the timber frame walls. Then steps are needed at all entrances, and they are neither barrier-free nor do they look particularly aesthetic with these huge transitions.

If you now coat the Styrofoam with a sealing slurry, apply a water-repellent protective coating to the first 30 cm of the outer wall of the timber frame, then plaster it and of course also apply the obligatory splash protection strip, that should work, right? I mean modeling the terrain up to 5 cm below the top of the floor slab so that enough air still circulates at the threshold from the base to the wooden wall? Does anyone have experience with this?

Doesn't anyone here in the forum have any experience with moisture protection at the base in timber frame construction?

Wood is not a suitable building material for a house in our regions, I speak from personal experience.

Apart from that, I know that some solve this by casting a raised edge all around the base slab so that the wooden frame structure only begins at the finished floor level.

Wood is not a suitable building material for a house in our latitudes, I speak from my own experience.

Can you share something from your experience? It doesn't seem to me to be the first and only house built with timber frame construction in our latitudes. The edge you mentioned can no longer be added afterward on the floor slab.

We had moisture damage in the spray area despite compliant execution, a house borer infestation, as well as serious problems with mold caused by a minor water damage that went unnoticed but would have been uncritical with brick construction. It was only a rental property, so no problem for me.

Surely the upstand can still be cast.

Surely the upstand can still be cast.

Thank you for your suggestions. Again regarding my post above: The base plate is cast, the house is erected, it is now about applying a protective layer before plastering:

coats the first 30 cm of the exterior wall of the timber frame construction with a water-repellent protective coating and then plasters it