Windows with a cladded finish

[Lincolnshire Ian]

Hi all

We are pondering how to get the best finish for our windows at the intersection of the window frame and the cladded wall. The timber frame house is erected "wind and watertight" with the windows and doors installed by the timber framed erectors. The windows will sit within the frame, then we have a 50mm void with cladding on top. 

We will have approximately 50mm of space between the window frame and the cladding that needs filling, and this seems impractical to cut such a small piece of cladding then use the required fixing strips etc. Has anyone found an elegant way to sort this out, or am I destined to spend hours cutting up cladding. 

The image shows my predicament. 

Thanks 

[Bonner]

Looks like it’s supposed to be a box frame not just a filler. Rip down the cladding and make and fit the box frame before face cladding up to it (will need temporary bracing to keep it square). A bit fiddly but will look good in the end. Is there a x-section of the window head showing any rain drip detail?

[Lincolnshire Ian]

21 hours ago, Bonner said:

Looks like it’s supposed to be a box frame not just a filler. Rip down the cladding and make and fit the box frame before face cladding up to it (will need temporary bracing to keep it square). A bit fiddly but will look good in the end. Is there a x-section of the window head showing any rain drip detail?

We haven't started cladding yet, but I like this idea.
Thanks