Here's a photo I took of a wood floor last week:
Does anyone want to venture a guess as to what the black stuff is between the boards? I'll give you a hint: The floor is on the deck of a boat.
It looks like a nice way of detailing the floor that will handle water well. But from what I can tell, the floor is only about 8 months old. I'd love to see it again in a couple years. And I don't think it would work on a floor where finish would be applied. I don't even know if this floor can be oiled.
Covered areas of the boat's floor are parquet glued to plywood and finished with a glossy top coat. Here's a cross section view of a hatch cover in the floor:
We've put water all over this floor for days, with no apparent effect. Again, the floor is only 8 months old or so, and it would be interesting to see how it holds up to salt and fresh water over time.
