Perimeter Expansion strip?

[junglejim]

Thanks for all the advice so far. One more detail I’m wondering is how high to bring the floor rpm up the stud work? It would seem to make sense on the external walls to lap up the concrete upstand (overlapping soleplate dpm) and then tape to the soleplate or sills or be left open at the edges and come up higher?

 

or… extend the dpm higher to underlap ybs foil and then tape the joint between ybs and dpm

Edited December 31, 2025 by junglejim