when to sand floor

Before you wallpaper them.

Seriously though. Sanding will remove nearly all marks, but paint that's been left to soak in may be tough.

Personally, I'd do the sanding of the floorboards almost last, as you've then got less chance to damage the surface.

Before you wallpaper them.

Seriously though. Sanding will remove nearly all marks, but paint that's been left to soak in may be tough.

Personally, I'd do the sanding of the floorboards almost last, as you've then got less chance to damage the surface.

Do make very sure that all varnishes and stuff are totally set, otherwise the dust may get to them.

Conversely, sand em first to get the crap out of the way, and cover with tough membrane and tape it all up.

Varnish last, backing out the door..

I tend to always find that the tough membrane has a pinkhole in exactly the wrong place, and the most staining substance finds that unerringly.

Err, that should of course be pinhole. The other rather changes the meaning from the one I intended.