We got most of the floor sanded down. Turns out that it’s apparently old-growth Douglas Fir. Hard as a rock. We knew the front porch is Douglas Fir, but didn’t expect that they’d also use that for the back porch. It was a real beast to get it sanded down.
Mostly the floor looks good, but you can see that the back area by the fridge is much darker (that area was not painted, and the wood darkened naturally over time), and there are also some dark splotchy areas that may be from water damage (see the area between the green gloves and the dustpan). I know this room was in terrible condition when the previous owner bought it, and it almost certainly had leaks in the roof.
We won’t be able to eliminate either – we’d have to sand too deeply, and even then, we might not get all of the darkness out. I don’t mind the dark section at the end, but I’m not sure how the dark streaks in the middle of the floor will look if we use a clear finish. I’d prefer a natural finish if possible, and I don’t mind if the floor looks a bit distressed – after all, it’s over 100 years old, but I don’t want it to look too blotchy, either.
We still have some sanding to do, and maybe we can do a bit more work on the blotchy areas and see if we can lighten them up a bit. Then we’ll decide whether we can do a clear finish, or will have to go with paint.
Where the wood isn’t blotchy, it’s really beautiful: