What's oozing up from our refinished hardwood?
We had our oak hardwood floors refinished in the spring (not stained). The contractor first refinished them using water-based Bona Traffic but that left the color of the floor so uneven that he resanded and refinished using an oil-based product. This summer the floors rose up along the length of some of the boards (some sharp edges and some long, shallow humps a couple of feet long). What's weirder is that in a lot of places something that I'm guessing is polyurethane (it's hard and clear) has oozed up all along the cracks between boards. Now we're seeing small, hard beads/drops appearing out of the cracks. Our contractor and his flooring guy swear nothing was done wrong and the boards will flatten out as the humidity drops. He hasn't given us much of an answer about the stuff between the boards aside from saying it will eventually work its way out.
It looks a little odd, but mostly it's scratchy (even sharp) to walk on in places and we're afraid it will get worse.
New wood was installed in one room and finished in the same ways (at the same times). That floor has hardly any of these problems.
We'd love to know what's going on and whether it will get better or worse... Has anyone else seen this happen?