[masraum]

Originally Posted by Zeke

If you have a belt sander and a time constraint, I don't think you have much choice. Try to use more than just your arms and elbows if it's low on the wall. Go through the grits. Don't spend a lot of time with heavy grit, just get things going in the right direction. I assume you will have to start cross grain/cross boards. A RO sander starting with 100 should get the wood going back towards being paintable. Nothing past 180 is needed for primer.

Previously, I used 80 for the floor, but it was hard as a rock (100 years old). I used it on the ceiling which is this new, young pine with 120 grit (which I've got a bunch more of), and the young pine cuts much faster, so I'm glad I wasn't using 80. I should be able to get the job done with the 120 grit and what's already on the walls.

I have a bunch more to install. I may try to put it together flat on the floor and sand it there and then reassemble it on the wall, as sanding on the wall is a b1tch.