Renovate the door. How do I seal the frame against the brick?

[Dr Benz]

Now it's time for the final stage in this extensive renovation of the winter garden, which is now insulated and will become a dining room.

The door and frame need to be renovated since they are custom-sized, making it extremely costly to find replacements. Especially since we want to keep the teak.

But how do we best seal against the brick? Currently, there is mortar on the outside. Various insulation materials are mixed in between, and on the inside, there is something resembling putty that does not fully dry.

What is the easiest and best solution to seal it properly in this situation? Open to all solutions so it doesn't show. It just needs to last in the long run.

 

[Dr Benz]

The other side looks fine, so considering applying new mortar on the right outside? But then you have to seal against drafts from the inside?

 

[Dr Benz]

It turned out to be foam sealant. It also stabilized the frame, so it turned out fantastic.