ᐅ Optimizing Insulation for Cavity Walls from 1978 and Minimizing Thermal Bridges at the Brickwork

Hello, I am facing the challenge of optimally insulating a cavity wall from 1978.
Clearly, cavity insulation is the first step. Adding perimeter insulation to the basement wall is also possible, although I am unsure about the best approach for the transition and waterproofing here.
How can I best reduce the thermal bridge at the lowest course of facing bricks?
Removing the lowest facing bricks and replacing them with an insulated block probably won’t work since the brick wall is likely supported above, or could the brick wall maybe be temporarily supported solely by the wall ties?

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I am open to any ideas 😉

007sascha schrieb:

How to effectively insulate a cavity wall from 1978.

Just apply external thermal insulation composite system (ETICS) to it. Then the issue is solved.

007sascha schrieb:

But how can I best minimize the thermal bridge at the lowest facing bricks?

Without ETICS, there is practically a thermal bridge everywhere anyway, so I wouldn’t do anything. It’s not worth the effort.

nordanney schrieb:
So, insulation boards outside. Then the issue is resolved.

I’m reluctant to apply external thermal insulation composite system (ETICS) to the facing brick wall because I want to preserve its appearance as much as possible. Of course, then I won’t meet the building energy law values, but as long as I don’t make major changes to the facade, that’s not a problem. Also, I would need to check whether the brick wall is even designed to carry the additional load of the ETICS. If ETICS were to be installed, it might even be better to remove the entire brick wall, which I currently find very unfortunate and complicated, especially since the brick wall is still in excellent condition.

nordanney schrieb:
Since without ETICS there are practically thermal bridges everywhere, I wouldn’t do anything at all. It’s not worth the effort.

Why should there be thermal bridges everywhere here? The steel anchors are barely significant, and otherwise the brick wall hardly has contact points with the masonry wall, apart from the mentioned lower support.

007sascha schrieb:

In addition, I would need to have it checked whether the brick veneer wall is even designed to carry the extra load from the external thermal insulation composite system (ETICS). If ETICS is installed, it might actually be better to demolish the entire brick veneer wall, which I currently find very unfortunate and labor-intensive, especially since the brick veneer wall is still in really good condition.

I don't know of any brick veneer wall (including my own from 1967 and 1980) where this would be a problem.

007sascha schrieb:

Why would there be thermal bridging everywhere here? The steel anchors hardly add any weight, and otherwise, the brick veneer wall barely has contact points with the structural wall, aside from the mentioned lower support.

Maybe I should have used quotation marks instead. I mean to say, that slight effect is just as significant as the brick veneer wall compared to the load-bearing wall.