Cleaning old floorboards
When we removed the lino from our landing, the floorboards below were and still are, covered in a white powdery filler/plaster. We've cleaned much of it off, but the stuff just won't go away and is stuck in the grain. I guess it was a leveller before the lino went down or something to fill in gaps.
Does anyone know what it is, or how to get rid of it? I've wondered about vinegar to break it down a bit.