Construction of a ground-level, covered terrace directly attached to the house

Hello, we would like to build a ground-level terrace (east side). It should be laid with travertine stone on gravel. Due to protection against moisture, it is well known that a 30cm splash guard etc. must be observed. I am aware of this, but in this case, a ground-level terrace would simply not be possible. My first thought was to simply use frost protection gravel and gravel up to the facade and protect it with a dimpled membrane. However, I am afraid that this would not be good for the house in the long run due to moisture (even if the terrace is actually protected from rain by a pergola).

Attached is a picture for illustration.

Now my question is whether for the connection to the building, a concrete base could "simply" be built. That is, to cast a concrete base (about 10 cm wide and 60 cm high) between the house facade (timber frame construction) and the terrace. In this case, moisture should no longer be a problem, right? Alternatively, drainage channels could of course be installed along the house, but these would also have to lie directly on gravel or concrete at the house.

Of course, not quite standard-compliant according to DIN, but it should actually work, or have I overlooked something?

Thank you in advance!

The splash guard is left out in the area of the terrace. Since it is covered, only a little rain gets there anyway and accordingly little moisture. A drainage channel would be required according to the standard, but if you have no risk of stagnant water, you can also omit it.

Our terrace is also covered and simply has a slope of 1% away from the house. And yes, if the bad weather occasionally comes whipping from the south, the outside of the house does get a bit wet.

30cm splash guard

You make that so the facade doesn't get dirty. When paving is done, the problem doesn't arise. And the facade should be able to withstand rain anyway.

Now my question is whether simply a concrete base can be built for the connection to the building. That is, to concrete a concrete base (about 10 cm wide and 60 cm high) between the facade of the house (timber frame construction) and the terrace.

Unnecessary nonsense...

Did you screw the lamp at the top with steel screws? The rust juice is already running out. It should be fastened with stainless steel screws.

You do that so the facade doesn't get dirty. If you pave, the problem doesn't arise. And the facade should be able to withstand rain.

Unnecessary nonsense...

Without concrete, the gravel would basically be separated from the house facade only by a dimpled membrane – I just fear that over time (from below or above) somehow moisture will still get on the house.