IT looks like I have some bolts starting to come up from the floor (bumps in the flooring). What is the best way to access them? Would I remove the flooring on top or remove the insulation from unde...
That's very odd. I think you're better of starting below, see if you can tighten the nut (assuming it's below at least) you could hold the bolt from below too, depending on how much room there is. Might add a nylock nut underneath too so it doesn't back out again.