New bifold, thermal break in wall?

[BunnyC]

Hi All, I am looking at doing an infill extension part of which involves replacing existing corner bi-folds with a larger straight bi-fold. My query is related to the fixing of the bifold to a perpendicular wall (circled on the drawing i have hopefully attached!). Is there a standard thermal break detail/product you have used in these situations where a standard cavity closer details isn’t achievable? Thanks in advance