Installing elevated wood floor in garage conversion.
Hey, new poster here. Here's my issue. We have a pier and beam house with a garage that the prior owner converted. It is just off the kitchen. The prior owner just laid down carpet over the concrete floor in the garage. The kitchen and rest of the house are P&B, so the kitchen floor is about 8-10 inches higher than and steps down onto the carpeted concrete in the conversion area.
I want a seamless transition. I would like to create an elevated floor in the conversion by creating a wood framework upon which I would lay subfloor and then the wood flooring. I know to use a vapor barrier, but do I use it directly upon the concrete and also another in the subfloor? Do I need to ensure some kind of ventilation in the 8-10 inches of open space between the concrete and subfloor?