ᐅ Edge trim as a base cladding in an older building?

Hello everyone,

In the older building we live in (built in 1968), the intermediate ceiling on the ground floor extends all the way to the exterior wall. At that time, the brickwork was placed directly on the intermediate ceiling. The house is partially basemented. In the basement area, we currently have water damage and plan to renew the wastewater pipes and also the driveway. In the non-basement area, we experience a dew point issue in the outer corners during winter.

Now I am wondering how to insulate and clad the base of the wall. Generally, I am not a fan of plastered surfaces. Here is an idea for which I would appreciate your evaluation:

I plan to expose the outer side of the intermediate ceiling (blue) as low as possible, clean it, and apply a bitumen coating. Then, apply a few centimeters of XPS insulation (orange). Above that, install a dimpled membrane, which I would fasten to the first row of bricks. As part of the driveway renovation, a granite edge (gray) will be installed in front of the base (protruding approximately 50cm (20 inches) over the driveway). I will bridge the gap with a wall connection profile attached to the second row of bricks. Between the metal profile and the granite edge, a compressible sealing tape will be inserted.

The area below will be backfilled, while space above will remain for cables and water pipes. Is there any reason this approach might be problematic?

Regards

Our building surveyor for the new construction was also a damage assessor. I would hire someone like that and listen to their advice before any damage occurs. Topic: airtightness, dew points, and thermal bridges.