Insects through an insulated slab?
We’ve sent a first draft of our basement assembly to our architect, and one of the concerns he came back with is a path for insects. Our basement is basically the H&H best practices slightly edited with information found on this site. Image attached. With that in mind, I have a few questions about the slab insulation and the transition to the walls.
1. Should the radon / vapor barrier under the slab act as an insect guard? If not, how would you protect against insects in this design? Sill plate over the gap between slab and wall, or something else?
2. Should the radon / vapor barrier under the slab “pop up” to slab level as shown in the picture, or go underneath the wall and connect to the footing barrier?
3. This assembly uses EPS under the slab. I just wanted to confirm whether or not this acts as an air barrier as well, or if an air barrier is not needed under the slab?
Thanks much for any advice – Ryan