How to fix a thermal bridge?

[Piers]

Hello!

 

I'm looking for some ideas on how to fix a potential thermal bridge in a garage/workshop building in which one zone will be heated (when in use) and the other zones will be unheated.

 

We're planning to build on an insulated raft in (insulated) ISOTEX ICF. The thinking behind this is that if we ever want to convert the building into habitable space, we might as well have the walls and floors installed with insulation as it'll be a lot more expensive to retrofit.

 

Architect.pdf

 

We've identified a couple of elements where there's likely to be a thermal bridge (see PDF)

Can anyone help with a solution? If you can sketch it out that'd be an added bonus.