Due to formaldehyde allergies, we built up an upper floor subfloor with unfinished 4" T&G oak flooring instead of plywood, OSB, etc. These are above grade bedrooms & living room (not rooms with moisture). We are going to put pad and carpet in these rooms, not finish the wood. Question: would it be better to pad/carpet over the unfinished oak wood or should we apply a primer/sealer ahead of time? If we do apply a primer/sealer...it would probably have to be a low/no-VOC latex product like Kilz Premium since we are living in the house. Thanks in advance for your advice!