You’ll need two rental machines: a drum sander to sand most of the floor and an edger to sand along baseboards.. Measure the room before you go. Knowing the square footage helps estimate how much sanding paper and edger discs you’ll need. Prep before you rent. The prep work will take longer than you think. Don’t waste money by picking up the sanders before you’re ready to use them.
Prep the Room
Prep the Room
Some of the prep work is obvious, like removing all the furniture and covering doorways with plastic.
Cover air vents to keep dust out of ducts. Turn off the HVAC system at the thermostat; less air movement means less dust traveling around your house.
Remove all window coverings and any art on the walls .
Remove doors that open into the room. You can’t completely sand under doors, even by opening and closing them.
Nail down any loose boards with finish nails.
When you’re sanding, nail heads will rip the sanding paper or gouge the sanding drum (which costs money). So countersink all nails by at least 1/8 in.
To detect nails, drag a metal snow shovel across the floor (upside down). When it hits a nail, you’ll hear it.
Using dull sandPaper is a strategy you’ll regret. Here’s the problem: After the floor finish is gone, you can’t see whether the sander is doing its job. So you keep sanding. The machine is raising dust and everything seems fine. But the dull paper isn’t cutting deep enough to remove the scratches left by the previous grit. And you may not discover this until you put a finish on the floor. A dull edging disc is even worse, since it won’t remove the ugly cross-grain scratches left by the previous disc. Even if paper feels sharp, it may be beyond its prime. So the best way to judge is by square footage covered. A typical belt covers about 250 sq. ft., and edger discs are spent after about 20 sq. ft. That varies .