I could use some sage advisement. I was preping our dinning room floor prior to installing some laminate flooring when in the process of replaceing the partical board underlayment I discovered oak flooring! I knew that there was old pine flooring but it apears those old krauts splurged on the dinning room. This is in a farm house in excess of 100 years. The wife pointed the laminate out the door. I will be sanding the 100 + years of burn marks, dents and scratches out. The amazing thing is that only the perimiter, about a foot wide, was varnished. The rest of the floor never had any finish applied. My long winded question is; What is the most durable finish for this (I think) white oak floor?