Waterproofing a timber area under a window in a block build

[phatboy]

Sorry for the lengthy Title, not sure how best to word it....

 

We are building in block on flat, with external insulation.  In 1 area, we are fitting a window, but will stud out below it, so that if in the future we want to convert it into some French doors, we can.

 

Any tips on how best to damp proof this?  Or, if I am planning to externally insulate across this bit too, do I even need to bother?

 

Thanks

Tim

[nod]

I presume the block is rendered 

Fix a cement board to the stud with back to back stop beads and render all Simply knock the stud out cleanly when you decide to add patios 

[phatboy]

On 29/12/2022 at 00:13, nod said:

I presume the block is rendered 

Fix a cement board to the stud with back to back stop beads and render all Simply knock the stud out cleanly when you decide to add patios 

 

Covered in 60mm Kingspan K5, and rendered.  So there is no additional need to damp proof, and relying on the render coats should be sufficient?

 

Cheers

Tim