I am renovating a 32 year old house in Georgia, now working on hardwood floors that appear to have been left raw, unfinished. After coating with polyurethane, the finish looked blistered/orange peeled. We sanded them completely down to bare would and tried poly again. The finish is terrible. It appears that the wood may have chemicals or something in it that is reacting with the poly. I am at a loss of what to do next, Any ideas/suggestions? Thanks.