I would rout a <7/8" groove and place emt inside, flush with subfloor.
I live in a rented home with Pergo, think it sucks. I have worked in many other homes with the stuff, once you have experienced it, few people like it. It is like living on loose formica, the harshg accoustics it creates are hard to live with, it is just another tacky "solution" that is more expensive than the real thing that it mimics...IMNSHO...imagine that this imaginary, printed facsimile is real wood...yeechh!
