We have recently done a DIY hardwood floor installation using a pre-finished birch product purchased from a major home improvement retailer. This material has micro-bevels, but we noticed during installation that it appears the finish which was applied to the top surface of the strips does not extend down the bevels, i.e.. the bevels are stained, but not actually finished. The result of this is that in all the bevels in the completed floor, we have exposed, unfinished wood, which is susceptible to absorbing liquids easily and could quickly ruin the floor - there are already a couple spots that have started to swell from spills. Of course, we could refinish the entire floor, but we were wondering if there was some way we might be able to seal the joints/bevels without resorting to a full refinish job?