I'm in the middle of helping with some major home renovations on a house built in 1867, and we've got to the point of refinishing the floors in one section. They appear to be original tongue and groove pine laid without a subfloor. Unfortunately, the owner kept multiple cat litter boxes in one of the rooms, and several years of abrasive grit being spread around has absolutely trashed the finish down to bare wood in many areas. Here's an album showing the damage.http://ift.tt/2nWFG7l've read a bunch of guides for refinishing floors, and I'm still confused about how to proceed. Should this all just be sanded down to bare wood and completely refinished? What equipment and grit progression should I use for pine?The person I'm helping has insisted on filling all the gaps with wood filler, and she's slowly making her way through the rooms. In the mean time I'd like to help secure various loose floorboards in the hallway. Almost every technique I've seen for doing this when there isn't a subfloor involves access from below, and this is the second story. Would trim screws be appropriate, or should I start removing floorboards and shimming from below? Bear in mind the floor is far from level in most of the house, so the loose boards have probably lifted off the joists.I'd really appreciate any advice on how to proceed because I really want to do this project properly rather than just forging ahead. via /r/DIY http://ift.tt/2np9IyQ
